SOHO-LASCO Comet Reports for 200209

Sep 01 2002 07:08:17 David Evans
dave.nokia3330@orange.net
A possible faint comet in archive blue C3 images of 2002/08/18


Visible in 13 frames... 1024 x 1024 0,0 Top Left


12:42 747, 628
13:42 737, 620
14:18 731, 616
14:42 728, 613
15:18 723, 609
15:42 717, 605
16:18 711, 601
16:42 707, 597
17:18 700, 593
17:42 696, 590
18:42 684, 581
19:42 672, 573
20:18 664, 567

- Dave

Sep 01 2002 07:32:25 David Evans
dave.nokia3330@orange.net
Possible faint comet in recent archive blue C3 images

of 2002/08/27

Visible in 12 frames... 1024 x 1024 0,0 Top Left


03:42 742, 624
04:18 736, 620
04:42 731, 617
05:18 725, 613
05:42 720, 610
06:18 713, 605
06:42 708, 601
07:42 697, 593
08:18 689, 588
08:42 684, 585
09:18 676, 579
09:42 672, 575


- Dave
Sep 01 2002 19:17:49 Derek Hammer
derek@sungrazer.nascom.nasa.gov
I have checked all claims up to and including August 31. I can

only confirm Rainer's non-group comet on Aug 19, 2002--a very cool
find. Measurements are below. Dave's 1st claim of 8/29 is still
pending. Recent soho comets are listed below...


SOHO# Reported By Date Camera
-----------------------------------------
502 X. Leprette 02/08/23 C2
503 J. Sachs 02/08/23-24 C2,C3 Congrats!
504 X. Zhou 02/08/26 C2
505 R. Kracht 02/08/27 C2
5xx D. Evans 02/08/29 C3 [Pending]
5xx J. Sachs 02/08/29 C3
5xx R. Kracht 02/08/19 C2


#COMMENT: SOHO 5xx, Non-group, (0,0) bottom left
# HEIGHT DATE TIME ANGLE TEL FC COL ROW
4.82 2002/08/19 06:06:05 84.5 C2 10 126.0 543.0
5.01 2002/08/19 06:30:05 86.7 C2 10 109.0 529.0
5.19 2002/08/19 06:54:05 88.7 C2 10 94.0 515.0
5.46 2002/08/19 07:31:47 91.8 C2 10 72.0 492.0
5.62 2002/08/19 07:54:05 93.6 C2 10 59.0 477.0
5.70 2002/08/19 08:06:05 94.3 C2 10 53.0 471.0
5.85 2002/08/19 08:30:05 96.0 C2 10 42.0 456.0
5.98 2002/08/19 08:54:05 97.6 C2 10 33.0 442.0
6.05 2002/08/19 09:06:05 98.3 C2 10 28.0 435.0
6.16 2002/08/19 09:30:05 99.8 C2 10 21.0 421.0
6.27 2002/08/19 09:54:07 101.2 C2 10 14.0 407.0
6.31 2002/08/19 10:06:05 101.9 C2 10 12.0 400.0
6.41 2002/08/19 10:30:20 103.3 C2 10 7.0 386.0
6.49 2002/08/19 10:54:05 104.7 C2 10 4.0 372.0
6.52 2002/08/19 11:06:05 105.3 C2 10 3.0 366.0
6.56 2002/08/19 11:30:05 106.7 C2 10 3.0 353.0
6.60 2002/08/19 11:54:05 107.9 C2 10 3.0 341.0
6.62 2002/08/19 12:06:05 108.7 C2 10 4.0 334.0
6.63 2002/08/19 12:30:05 110.0 C2 10 7.0 322.0
6.63 2002/08/19 12:54:05 111.2 C2 10 11.0 311.0
6.63 2002/08/19 13:31:47 113.2 C2 10 18.0 294.0
6.61 2002/08/19 13:54:06 114.4 C2 10 24.0 284.0
6.61 2002/08/19 14:06:05 115.0 C2 10 27.0 279.0
6.57 2002/08/19 14:30:05 116.4 C2 10 35.0 269.0
6.53 2002/08/19 14:54:05 117.8 C2 10 44.0 259.0
6.51 2002/08/19 15:06:05 118.5 C2 10 49.0 254.0
6.46 2002/08/19 15:30:05 119.8 C2 10 58.0 245.0
6.40 2002/08/19 15:54:05 121.2 C2 10 69.0 237.0

Derek
Sep 02 2002 11:54:42 XingMing Zhou
zh_x_m
A object in SWAN images, from 2002.08.13 to 08.19

m1 about 10 MAG, The same as movement of the sun,
Is it a comet?

0,0 in upper left corner, Size 640 x 512.

Approximate
Date X Y Lambda Beta
----------------------------
08.13 432 312 102 -2.0
08.14 429 311 104 -1.5
08.16 426 311 107 -1.5
08.19 422 309 111 -1.0

XingMing Zhou
Sep 02 2002 12:13:23 Sebastian Hoenig
Sebastian@sungrazer.org
The MPChercker reveals:


46P/Wirtanen

Regards, Sebastian
Sep 02 2002 12:18:29 Rainer Kracht
R.Kracht@t-online.de
XingMing: yes, it's 46P/Wirtanen.


Rainer
Sep 02 2002 12:31:58 XingMing Zhou
zh_x_m@163.net
Sebastian and Rainer, yes, You are right,

I just checked this comet, thanks!

XingMing Zhou
Sep 02 2002 13:27:16 Rainer Kracht
R.Kracht@t-online.de
possible Marsdencomet in C2 images

b/w 512*512 from the LASCO website
enlarged to 1024*1024
0,0 in upper left corner

Date Time x y
20020902 1625 1018 268
20020902 1640 1004 262
20020902 1650 996 258
20020902 1655 992 258

Rainer
Sep 02 2002 13:40:49 Rainer Kracht
R.Kracht@t-online.de
UPDATE Marsden group comet in C2 images

b/w 512*512 from the LASCO website
enlarged to 1024*1024
0,0 in upper left corner

Date Time x y
20020902 1625 1018 268
20020902 1640 1004 262
20020902 1650 996 258
20020902 1655 992 258
20020902 1710 978 252
20020902 1720 970 248
20020902 1725 964 246

Rainer
Sep 02 2002 14:02:27 Maik Meyer
maik@comethunter.de
Congrats Rainer!


If the orbital elements confirm this as a Marsden group comet
it will be the first after C/2000 C4 in February 2000 - 2.5
years ago! and the 13th member of this group.

Regards, Maik
Sep 02 2002 18:02:10 Rainer Kracht
R.Kracht@t-online.de
I could follow the new Marsden group comet

in GIF images until

20:35 791 192
20:40 786 191

there are many points to measure
but it will be a great achievement
for the Marsden group

Rainer
Sep 03 2002 11:41:56 Rainer Kracht
R.Kracht@t-online.de
possible comet in C2 images

b/w 512*512 from the LASCO website
enlarged to 1024*1024
0,0 in upper left corner

Date Time x y
20020903 1425 876 160
20020903 1440 862 154
20020903 1450 854 150
20020903 1455 848 148

Rainer
Sep 03 2002 11:49:20 Rainer Kracht
R.Kracht@t-online.de
UPDATE comet in C2 images

b/w 512*512 from the LASCO website
enlarged to 1024*1024
0,0 in upper left corner

Date Time x y
20020903 1425 876 160
20020903 1440 862 154
20020903 1450 854 150
20020903 1455 848 148
20020903 1510 834 140
20020903 1520 826 136
20020903 1525 822 134

looks like another small Marsden group comet

Rainer
Sep 03 2002 14:13:24 Sebastian Hoenig
Sebastian@sungrazer.org
Confirmation of Rainer's find.


Hey folks out there, what are you doing? Is no one willing to
discover Marsden, Meyer or Kracht comets ;)
Anyhow: very big congratulations and big compliment for Rainer
on finding all those comets!!!!!

Regards, Sebastian
Sep 03 2002 23:17:14 John Sachs
imagephoto@blazenet.net
Possible comet in C3 images    

0,0 Top Left x and y Coordinates
C3 1024x1024 Images x and y Coordinates
20020904 0042 C3 961 621
20020904 0018 C3 968 628
20020903 2342 C3 978 633
20020903 2318 C3 987 640
John
Sep 04 2002 15:27:00 Doug Biesecker
doug@sungrazer.nascom.nasa.gov

I can confirm R. Kracht's two recent claims. None of the other
recent claims can be confirmed. Also, we don't deal with SWAN
comets here. Take those discussions to the Yahoo newsgroup
sohohunter.

So, there is some doubt about the numbers, but the rough positions
for the two latest finds are given below. Still one pending claim.
See Derek's last post. The two recent comets were seen in C2 only.

Isn't high cadence wonderful? This is what we can expect with the
future coronagraphs on STEREO and SDO. By the way, did you all
see that the folks who brought you LASCO will be bringing you the
SDO coronagraph? Due for launch in August 2007.

Doug

# HEIGHT DATE TIME ANGLE TEL FC COL ROW
6.98 2002/09/02 16:20:05 296.3 C2 10 1022.0 753.0
6.94 2002/09/02 16:25:05 296.8 C2 10 1017.0 756.0
6.86 2002/09/02 16:35:05 297.4 C2 10 1008.0 759.0
6.82 2002/09/02 16:40:05 297.7 C2 10 1004.0 760.0
6.76 2002/09/02 16:50:05 298.3 C2 10 997.0 763.0
6.72 2002/09/02 16:55:06 298.8 C2 10 992.0 765.0
6.65 2002/09/02 17:05:05 299.6 C2 10 983.0 769.0
6.61 2002/09/02 17:10:05 300.0 C2 10 978.0 771.0
6.53 2002/09/02 17:20:07 300.8 C2 10 969.0 774.0
6.52 2002/09/02 17:25:05 301.4 C2 10 965.0 778.0
6.43 2002/09/02 17:35:06 302.0 C2 10 956.0 779.0
6.40 2002/09/02 17:40:05 302.3 C2 10 952.0 780.0
6.35 2002/09/02 17:50:07 303.2 C2 10 944.0 785.0
6.29 2002/09/02 17:55:05 303.7 C2 10 938.0 786.0
6.21 2002/09/02 18:05:05 304.5 C2 10 929.0 788.0
6.17 2002/09/02 18:10:06 305.0 C2 10 923.0 790.0
6.12 2002/09/02 18:20:05 305.8 C2 10 916.0 793.0
6.08 2002/09/02 18:25:05 306.2 C2 10 911.0 794.0
6.03 2002/09/02 18:35:05 307.0 C2 10 904.0 797.0
5.98 2002/09/02 18:40:06 307.6 C2 10 897.0 799.0
5.92 2002/09/02 18:50:05 308.5 C2 10 889.0 802.0
5.87 2002/09/02 18:55:05 309.2 C2 10 882.0 804.0
5.80 2002/09/02 19:06:01 310.1 C2 10 873.0 806.0
5.80 2002/09/02 19:10:24 310.6 C2 10 870.0 809.0
5.72 2002/09/02 19:20:37 311.6 C2 10 860.0 811.0
5.69 2002/09/02 19:25:05 312.0 C2 10 856.0 812.0
5.64 2002/09/02 19:35:05 313.0 C2 10 847.0 815.0
5.59 2002/09/02 19:40:06 313.6 C2 10 841.0 816.0
5.56 2002/09/02 19:50:06 314.6 C2 10 834.0 820.0
5.51 2002/09/02 19:55:05 315.0 C2 10 829.0 819.0
5.47 2002/09/02 20:05:06 316.3 C2 10 819.0 824.0
5.45 2002/09/02 20:10:05 317.0 C2 10 814.0 826.0


# HEIGHT DATE TIME ANGLE TEL FC COL ROW
7.10 2002/09/03 11:40:05 299.4 C2 10 1017.0 786.0
7.06 2002/09/03 11:50:05 300.2 C2 10 1010.0 791.0
7.03 2002/09/03 11:55:05 300.6 C2 10 1006.0 793.0
6.96 2002/09/03 12:05:05 301.5 C2 10 996.0 798.0
6.93 2002/09/03 12:10:05 302.0 C2 10 992.0 801.0
6.89 2002/09/03 12:20:05 302.9 C2 10 984.0 807.0
6.87 2002/09/03 12:25:05 303.4 C2 10 980.0 810.0
6.82 2002/09/03 12:35:05 304.2 C2 10 972.0 814.0
6.77 2002/09/03 12:40:05 304.7 C2 10 966.0 816.0
6.71 2002/09/03 12:50:05 305.6 C2 10 957.0 820.0
6.70 2002/09/03 12:55:05 306.0 C2 10 954.0 823.0
6.65 2002/09/03 13:05:05 306.9 C2 10 946.0 827.0
6.61 2002/09/03 13:10:05 307.4 C2 10 940.0 829.0
6.59 2002/09/03 13:20:07 308.5 C2 10 933.0 836.0
6.56 2002/09/03 13:25:05 308.8 C2 10 929.0 837.0
6.50 2002/09/03 13:35:05 309.9 C2 10 919.0 842.0
6.48 2002/09/03 13:40:05 310.2 C2 10 916.0 843.0
6.45 2002/09/03 13:50:05 311.3 C2 10 907.0 849.0
6.42 2002/09/03 13:55:05 311.7 C2 10 903.0 850.0
6.36 2002/09/03 14:05:06 312.8 C2 10 893.0 854.0
6.35 2002/09/03 14:10:05 313.2 C2 10 890.0 856.0
6.31 2002/09/03 14:20:05 314.2 C2 10 881.0 860.0
6.29 2002/09/03 14:25:05 314.8 C2 10 876.0 863.0
6.24 2002/09/03 14:35:05 315.9 C2 10 866.0 867.0
6.23 2002/09/03 14:40:05 316.5 C2 10 862.0 870.0
6.19 2002/09/03 14:50:05 317.5 C2 10 853.0 874.0
6.17 2002/09/03 14:55:06 318.1 C2 10 848.0 876.0
6.14 2002/09/03 15:05:05 319.1 C2 10 840.0 880.0
6.12 2002/09/03 15:10:05 319.7 C2 10 835.0 882.0
6.08 2002/09/03 15:20:07 320.8 C2 10 826.0 886.0
6.09 2002/09/03 15:25:05 321.4 C2 10 822.0 890.0
6.04 2002/09/03 15:35:06 322.4 C2 10 813.0 892.0
6.02 2002/09/03 15:40:05 323.0 C2 10 808.0 894.0
6.00 2002/09/03 15:50:07 324.3 C2 10 798.0 899.0
5.99 2002/09/03 15:55:05 324.8 C2 10 794.0 901.0
5.96 2002/09/03 16:05:05 325.9 C2 10 785.0 904.0
5.95 2002/09/03 16:10:05 326.4 C2 10 781.0 906.0
5.92 2002/09/03 16:20:07 327.6 C2 10 771.0 910.0
5.92 2002/09/03 16:25:05 328.3 C2 10 766.0 913.0
5.91 2002/09/03 16:35:05 329.4 C2 10 758.0 917.0
5.89 2002/09/03 16:40:06 330.0 C2 10 753.0 918.0
5.88 2002/09/03 16:50:05 331.1 C2 10 744.0 922.0

Sep 05 2002 16:01:00 Rob Matson
matsonr@saic.com
2002 September 5 - Non-Kreutz comet in C2 real-time images

*ending* at 09:54. Approximate positions in 1024x1024
images (0,0 in upper left corner):

YYYY-MM-DD HH:MM Col Row
---------------- ---- ---
2002-09-05 09:30 1003 528
09:54 1020 520

More positions in next post.. --Rob
Sep 05 2002 16:13:59 Rob Matson
matsonr@saic.com
UPDATE 2002 September 5 - Non-Kreutz, "wrong-way" comet in C2

real-time images ending at 09:54. Approximate positions in
1024x1024 images (0,0 in upper left corner):

YYYY-MM-DD HH:MM Col Row
---------------- ---- ---
2002-09-05 05:06 804 605
05:30 823 599
05:54 842 591
06:06 852 587
06:30 870 580
06:54 889 573
07:31 917 562
07:54 934 555
08:06 943 552
08:30 961 545
08:54 978 538
09:06 987 535
09:30 1003 528
09:54 1020 520

Wonder if this was visible on the other side of the sun on
approach?

--Rob
Sep 05 2002 17:09:13 Rainer Kracht
R.Kracht@t-online.de
Congrats!

It moves very close to the apparent track
of C/1999 R1 with the right speed.
So it's certainly related to C/1999 R1
and there could evolve another new group.

Rainer
Sep 05 2002 22:03:52 Rob Matson
matsonr@saic.com
2002 September 5/6 - Comet in C3 real-time images starting

at least as early as 16:42. This may be the same as my
C2 comet reported earlier today given the unusual direction.
What's especially interesting is the comet starts out heading
away from the sun, slows, and then starts heading back in!
Approximate positions in 1024x1024 images (0,0 in upper left
corner):

YYYY-MM-DD HH:MM Col Row
---------------- ---- ---
2002-09-05 16:42 673 466
17:18 676 464
17:42 678 463
18:18 680 461
18:42 (bad frame repeat of 18:18)
20:04 685 456
20:42 687 454
21:23 688 453
21:44 688 452
22:18 688 451
23:18 689 448
23:42 689 448
2002-09-06 00:18 688 447

--Rob
Sep 05 2002 22:50:50 Rob Matson
matsonr@saic.com
Update C2/C3 comet:  my back-of-the-envelop extrapolation

confirms that the C3 comet is the same as the one in C2.
One more 1024x1024 C3 data point:

2002-09-05 16:18 671, 467

(The next earlier time is 12:18, and I can't see anything
compelling at the expected coordinates). --Rob
Sep 05 2002 23:01:31 Derek Hammer
derek@sungrazer.nascom.nasa.gov
There's been much activity so I believe an update is in order.

First, Doug's last post did not pertain to the two September 1st
posts by D. Evans. Those comets are now confirmed and we have
also decided to confirm Dave's pending claim of a comet in Aug 29,
2002 C3 images. Also, I can confirm Rob's comet in Sept 5, 2002
images. The now current SOHO comet numbers are listed below...

SOHO# Reported By Date Camera
-------------------------------------------
506 D. Evans 02/08/29 C3
507 J. Sachs 02/08/29 C3
508 R. Kracht 02/08/19 C2
509 D. Evans 02/08/18 C3
510 D. Evans 02/08/27 C3
511 R. Kracht 02/09/02 C2
512 R. Kracht 02/09/03 C2
513 R. Matson 02/09/05 C2

Note: We have not yet checked both cameras for some comets.

Derek
Sep 06 2002 11:05:20 Scamato Toni
toniscarmato@libero.it
Possible comet in c3 visible at positions


2002/09/06 1024x1024 0,0 top-left

1118 628,578
1142 627,577
1218 625,576
1242 624,575

faint object moving from right to left.


Regards,

Toni Scarmato
Sep 06 2002 17:00:34 Rob Matson
matsonr@saic.com
UPDATE C2/C3 comet:  a few more positions on the comet in

C3 that is looping back toward the sun:

2002-09-06 00:42 688 446
01:42 685 442
04:18 679 441
06:42 671 438

The comet is visible in other frames between 01:42 and 06:42,
but it is difficult to determine accurate positions. Based
on an extrapolation of the last two points, the comet's path
should take it back into C2 somewhere around row 175 at about
21:00 UT (probably earlier due to acceleration). --Rob
Sep 06 2002 17:18:27 Rainer Kracht
R.Kracht@t-online.de
UPDATE C2/C3 comet:

it's not really looping back toward the sun
but toward C2 (the perihelion lies outward of C2).
I have found it:
2002-09-06 04:42 678 441
05:42 675 440
06:42 671 439

confirming your positions.

The apparent track in C3 is not so close to the track
of C/1999 R1 indicating a different q or L or both.
We have to wait for more positions and the orbital
determination to see how closely they are related.

If it will reenter C2 my best guess is that this has
happened at about 18:00 UT.

Rainer
Sep 06 2002 22:05:53 Doug Biesecker
doug@sungrazer.nascom.nasa.gov
Just a quick note that I have received an e-mail from the

SOHO-500 contest winner, Diane McElhiny, to confirm that she received her prize package. Thanks for the great contest
everyone.

Doug
Sep 07 2002 07:15:49 David Evans
dave.nokia3330@orange.net
Possible faint comet in recent C3 images of 2002/08/29.

Visible in 7 frames.

1024 x 1024 0,0 Top Left

16:42 792, 670
17:18 784, 665
17:42 778, 660
18:18 770, 655
18:42 764, 651
19:42 751, 642
20:18 743, 635

A test for sharp vision but it looks real...
Best viewed with x2 magnification and slightly higher contrast.

- Dave

Sep 07 2002 08:12:25 David Evans
dave.nokia3330@orange.net
UPDATE To my last post.


Oh the embarrassment *blushes* :o)

Please completely disregard my last posting.

It would appear that under the higher magnification I had inadvertantly picked up John Sachs comet !

Also I noticed that the positions I gave were in error too
as I was using IrfanView (at 1126x1126 resolution)to slide-show
the images not 1024x1024 as I usually do. Thats what threw me
with the identification.

My apologies all....

- Dave



Sep 09 2002 12:02:03 John Sachs
imagephoto@blazenet.net
 C3 images      

Possible comet diffused
0,0 Top Left x and y Coordinates
C3 1024x1024 Images x and y Coordinates
20020909 1442 C3 777 582
20020909 1418 C3 781 585
20020909 1342 C3 795 593
20020909 1242 C3 801 601
20020909 1242 C3 812 605
Thanks John
Sep 09 2002 12:04:15 John Sachs
imagephoto@blazenet.net
Correctiion to my last post the last time 1242 should read 1218 

C3 images
Possible comet diffused
0,0 Top Left x and y Coordinates
C3 1024x1024 Images x and y Coordinates
20020909 1442 C3 777 582
20020909 1418 C3 781 585
20020909 1342 C3 795 593
20020909 1242 C3 801 601
20020909 1218 C3 812 605
Thanks John
Sep 10 2002 17:44:39 Rob Matson
matsonr@saic.com
2002 September 10 - Possible comet in C3 real-time images

starting at 15:18. It's pretty dim and diffuse, and seems
to be moving a bit too slow, but I think it's worth a
look. Approximate positions in 1024x1024 images
(0,0 in upper left corner):

YYYY-MM-DD HH:MM Col Row
---------------- ---- ---
2002-09-10 15:18 729 556
15:42 727 556
16:18 725 555
16:42 724 555

I see hints of whatever it is in a few later frames, but
can't convince myself of the coordinates. --Rob
Sep 13 2002 10:49:15 Tony Hoffman
tonyhoffman@earthlink.net
A warm farewell to Doug--I just realized that today is his last day.


--Tony H.
Sep 13 2002 13:51:20 Dave Evans
dave.nokia3330@orange.net
Yes, the very best of wishes to you Doug. It looks like the big pot of red ink belongs to Derek now. Enjoy life to the full and have fun in everything you do...


- Dave

Sep 13 2002 14:38:11 Doug Biesecker
doug@sungrazer.nascom.nasa.gov

Thanks for the messages everyone. Today is indeed my last day.
I've really enjoyed working with all of you on the LASCO comet
discoveries. Hope you've enjoyed it as much as me.

Please show some patience with Derek. He is a student, so he's
not always able to respond to posts immediately.

Keep an eye on those LASCO images. And watch out for those future
missions, such as STEREO and SDO.

Doug
Sep 13 2002 14:46:10 David Evans
dave.nokia3330@orange.net
Just monitoring an interesting movement...


Possible comet in real-time C3, could just be noise.

2002/09/13

1024x1024 gifs 0,0 Top Left

16:18 686, 600
16:42 682, 596
17:18 673, 590

- Dave
Sep 13 2002 14:48:48 John Sachs
imagephoto@blazenet.net
C3 images a     

Possible comet
0,0 Top Left x and y Coordinates
C3 1024x1024 Images x and y Coordinates
20020913 1742 C3 743 628
20020913 1718 C3 748 631
20020913 1642 C3 755 636
20020913 1618 C3 759 639
Thanks John
Sep 13 2002 14:59:08 David Evans
dave.nokia3330@orange.net
UPDATE...


Possible comet in real-time C3.

2002/09/13

1024x1024 gifs 0,0 Top Left

16:18 686, 600
16:42 682, 596
17:18 673, 590
17:42 668, 587

It looks like your object John is trailing mine on the very same
path.

Another comet pair for us perhaps? Awaiting further images...

- Dave
Sep 13 2002 15:10:55 David Evans
dave.nokia3330@orange.net
Update:


One further position to add to my C3 report...

18:18 661, 583

Yes, both our objects look real John - Well Done!

- Dave
Sep 13 2002 15:12:32 Rob Matson
matsonr@saic.com
2002 September 13 - Possible comet in C3 real-time images

starting prior to 18:18. Latest approximate position in
1024x1024 images (0,0 in upper left corner):

YYYY-MM-DD HH:MM Col Row
---------------- ---- ---
2002-09-13 18:18 691 580

More positions in follow-up message.

--Rob
Sep 13 2002 16:12:30 Rob Matson
matsonr@saic.com
Hi All,


I withdraw my earlier C3 candidate post of 15:12:32. Nothing
compelling appears at 18:42. I had one prior "shadow" to
the 18:18 comet-like object at 17:42, but it looks like an
artifact.

Congrats to Dave and John for their vigilance in catching
these two (paired) comets in C3 today! Will a third
materialize?? --Rob
Sep 13 2002 21:33:45 John Sachs
imagephoto@blazenet.net
C2 images a     

Possible comet I see this quite well
in frames 1130,1154,1206. But fading fast.
0,0 Top Left x and y Coordinates
C2 1024x1024 Images x and y Coordinates
20020913 1606 C2 853 110
20020913 1554 C2 858 115
20020913 1230 C2 Bad Frame
20020913 1206 C2 884 155
20020913 1154 C2 893 162
20020913 1130 C2 903 171
20020913 1106 C2 914 174
Thanks John
Sep 14 2002 04:16:45 Shane Steinman
shane@archangel.net
Straight up, slightly east from my Toronto position.


I'm not a pro, so I can't give you declination etc. but you can't miss it with the naked eye. Red comet. Huge coma. Inbound.

I'm awestruck!
Sep 14 2002 06:31:13 David Evans
dave.nokia3330@orange.net
Possible Kreutz comet in recent C3 images of

2002/08/16 - 2002/08/17. Visible in 9 frames.

1024x1024 gifs 0,0 Top Left

The object is small and faint, but it appears to be real...

2002/08/16
21:18 735, 619
21:42 730, 615
22:18 724, 610
23:18 715, 603
23:42 710, 599

2002/08/17
00:42 700, 592
01:42 689, 585
02:18 680, 579
02:42 675, 575

- Dave


Sep 14 2002 08:29:14 David Evans
dave.nokia3330@orange.net
Another possible Kreutz comet in recent C3 images of 2002/08/18. 


1024x1024 gifs 0,0 Top Left

The object is faint, but can be followed quite easy.

2002/08/18

12:42 746, 627
13:42 737, 620
14:18 730, 615
14:42 727, 612
15:18 721, 608
15:42 717, 605
16:18 710, 600
16:42 705, 596
17:18 698, 591

- Dave

Sep 14 2002 09:45:29 David Evans
dave.nokia3330@orange.net
DO YOU WANT TO HEAR A FUNNY STORY ???  :o)

Well this one has to be the height of embarrassment....

Here goes!
Head held in shame LOL.... Erm, please disregard my last post!

What can I say *smiles*, I seem to have inadvertantly
rediscovered... >>>> MY OWN comet >>> - SOHO 509 !!! (re: Sep 1)

If anyone can suggest why I shouldn't get double credit on this
comet, then now is the time to place your objection... :o)

Well now that I've put a big smile on all your faces, I think I
need a Guiness or a good stiff drink.

- Dave

Sep 14 2002 19:14:57 John Sachs
imagephoto@blazenet.net
C3 images     

Possible comet.
0,0 Top Left x and y Coordinates
C3 1024x1024 Images x and y Coordinates
20020914 2218 C3 828 680
20020914 2142 C3 834 684
20020914 2118 C3 844 689
20020914 2042 C3 853 692
20020914 2018 C3 859 693
Thanks John
Sep 14 2002 20:16:02 John Sachs
imagephoto@blazenet.net
Please disregard my post below of

Sep 14 2002 19:14:57. It appears
that I lined up Noise. My apologies
to all.
Sep 15 2002 12:15:15 Rainer Kracht
R.Kracht@t-online.de
possible Meyer group comet in C2 images

b/w 512*512 from the LASCO website
enlarged to 1024*1024
0,0 in upper left corner

Date Time x y
20020915 1506 1016 146
20020915 1530 992 124
20020915 1554 964 100
20020915 1606 952 90

Rainer
Sep 15 2002 13:21:02 Maik Meyer
maik@comethunter.de
Confirmation of Rainer's probable Meyer group comet until at least

16:30 UT. This would be number 32. ;)

Regards, Maik
Sep 15 2002 14:16:05 Rainer Kracht
R.Kracht@t-online.de
UPDATE small Meyer group comet in C2 images

1024*1024 0,0 in upper left corner

Date Time x y
20020915 1506 1017 147
20020915 1530 992 124
20020915 1554 965 101
20020915 1606 952 90
20020915 1630 924 69
20020915 1654 895 48
20020915 1706 881 38

Rainer
Sep 16 2002 12:06:55 Scarmato Toni
toniscarmato@libero.it
Possible comet in c3 starting at


2002/09/16

1218 698,593

1024x1024 0,0 top-left corner

visible in 4 images

other positions at next post

Regards,

Toni Scarmato
Sep 16 2002 12:13:49 Scarmato Toni
toniscarmato@libero.it
Update possible comet in c3


positions 1024x1024 0,0 top-lft corner

2002/09/16

1218 697,594
1242 695,592
1342 691,590
1418 687,589

Regards,

Toni Scarmato
Sep 16 2002 18:10:41 Derek Hammer
derek@sungrazer.nascom.nasa.gov
I have looked at all claims since my last post on Sept. 5 and

I can only confirm 3 comets. They are ...

SOHO# Reported By Date Camera
--------------------------------------------
414 D. Evans 02/09/13 C3
415 J. Sachs 02/09/13-14 C3
416 R. Kracht 02/09/15 C2

Email me with any questions regarding these recent claims.

Derek



Sep 16 2002 21:00:25 Robin Miller
robinmiller@max.inter.net
Lasco (Naval Observatory) C3 02 Sept17 at 0:04


Comet moving from lower left-hand corner,

tothe left of the handle. inwards to the Sun.
Sep 17 2002 10:27:13 Sebastian Hönig
Sebastian@sungrazer.org
New sungrazer in LASCO C3 b/w images


Right corner, bright, slight tail,

images: 13:42, 14:18 today

Positions next post.

Sebastian Hönig
Sep 17 2002 10:30:55 Sebastian Hönig
Sebastian@sungrazer.org
New sungrazer in LASCO C3 b/w images

(Update: First Positions)

Date: Sep 17, 2002

Description:
Right corner, bright and becoming brighter, slight tail

Positons: (0,0) upper left, 1024 x 1024 (from b/w)

Time (x,y)
13:42 953,802
14:18 948,798

Sebastian Hönig
Sep 17 2002 10:57:55 Sebastian Hönig
Sebastian@sungrazer.org
New sungrazer in LASCO C3 b/w images

(Update #2: Confirmation)

Positons: (0,0) upper left, 1024 x 1024 (from b/w)

Time (x,y)
13:42 953,802
14:18 948,798
14:42 944,796

Should become a nice bright "Top 10" comet. :)

Sebastian Hönig
Sep 17 2002 11:12:22 Xavier Leprette
xavier.leprette@wanadoo.fr
A possible sungrazing comet in a real-time C3 images now.


The object is faint and it is visible in 3 images on
2002/09/17 from 13:42 to 14:42 UT.
The suspect is moving towards the sun.

Approximate positions: (0,0) upper left, 512 x 512 images
col,row
13:42 370,317
14:18 366,315 BW image
14:42 364,312 Bw image

I'm not sure so I'm waiting other images to confirm the object.

Xavier Leprette
Sep 17 2002 11:16:44 Sebastian Hönig
Sebastian@sungrazer.org
INteresting case: I confirm Xavier's comet


However: I have send this comet to the list EXACTLY the same time
(I have evidence with the confirmation page) but the report does
nor appear. Well, I will contact Derek...

Regards, Sebastian
Sep 17 2002 11:48:50 xavier Leprette
xavier.leprette@wanadoo.fr
A possible sungrazing comet in a real-time C3 images now.

UPDATE: I can confirm my previous report

The objectis visible in 4 images on 2002/09/17 from 13:42 to 1518 UT.
The suspect is moving towards the sun.

Approximate positions: (0,0) upper left, 512 x 512 images
col,row
13:42 370,317
14:18 366,315 BW image
14:42 364,312 Bw image
15:18 360,310 Bw image

Xavier Leprette
Sep 17 2002 13:17:17 David Evans
dave.nokia3330@orange.net
Just monitoring an interesting movement of a possible companion

object approximately +31, +33 from sebastians comet.

1024x1024 0,0 Top left.

The object is small and appears to be gradually brightening, but it may simply be nothing more than noise...

However it does appear to keep pace.

2002/09/17
14:42 758, 658
15:18 752, 654
15:42 748, 650

Awaiting further images...

- Dave
Sep 17 2002 13:21:35 Rob Matson
matsonr@saic.com
2002 September 17 - There is a second comet leading the bright

one in C3, much closer to the sun. Approximate positions
in 1024x1024 images (0,0 in upper left corner):

YYYY-MM-DD HH:MM Col Row Col Row
---------------- ---- --- --- ---
2002-09-17 15:18 721 620
15:42 716 617
16:18 709 612
16:42 704 608

--Rob
Sep 17 2002 13:26:59 Rob Matson
matsonr@saic.com
Apologies -- my last report is the same as Xavier's comet.

It was not clear from a quick reading of the reports that
there were TWO bright comets, not one. This September is
proving to be a much busier one than prior years! --Rob
Sep 17 2002 13:45:43 David Evans
dave.nokia3330@orange.net
Re: My last posting of Sep 17 2002 13:17:17 is in error - 

I did of course mean Xavier Leprette's comet.

- Dave
Sep 17 2002 14:57:23 Esko Lyytinen
esko.lyytinen@www.fi or esko.lyytinen@minedu.fi

A (probably Kreutz) sungrazer entered the C3 field at 13:42 near the edge between 4 or 5 a clock. Apparent at maybe eight images.

Esko
Sep 17 2002 15:20:08 Esko Lyytinen
esko.lyytinen@www.fi
Sorry that I don't have good means of measuring the pixels.

It is very obvious. Probably becomes quite bright, since clearly
visble from the C3 edge.
Very rough positions (at 1024x1024 size) of the entering at 13:42
(956,800); (0,0) top left coener.

Esko
Sep 17 2002 15:55:24 Esko Lyytinen
esko.lyytinen@www.fi

Sorry, I now see that the comet was found earlier. I didn't know that the
times at the page are not UT. So, because I didn't see a
reporting after the UT it entered the field, I thougt there can be no mention of it yet. Now I know better.

Esko
Sep 17 2002 17:29:56 Tony Yazek
tyazek@hotmail.com
Found faint comet on C-3 photos on  9-17-02 at 17:42 onward in extreme southeast quadrant of photo.
Sep 17 2002 17:41:00 Tony Yazek
tyazek@hotmail.com
The r.a. of faint comet is the same r.a. as the Sun was on Sept. 11, 2002.
Sep 17 2002 18:02:49 Rob Matson
matsonr@saic.com
I believe I see Xavier's comet entering C2 at 21:54.  Approximate

coordinates expanded from 512x512 B&W images (0,0 in upper left
corner):
HH:MM Col Row
----- ---- ---
2002-09-17 21:54 1022 862

--Rob
Sep 17 2002 18:59:43 Rob Matson
matsonr@saic.com
2002 September 17 - With all the excitement of two bright

comets in C3 today, who would have thought that a non-group
comet would be hiding in C3 as well? Well, there is one!
Here are coordinates for a few frames -- it is visible
earlier than these and later than these, but these coords
should be enough to identify it. 1024x1024 coordinates
(0,0 in upper left corner):

YYYY-MM-DD HH:MM Col Row
---------------- ---- ---
2002-09-17 12:18 689 514
12:42 691 512
14:18 695 507
14:42 697 506
15:18 698 504
15:42 699 503
16:18 700 501
16:42 701 499

It may have been visible earlier in C2, like my other non-group
comet earlier this month. Indeed, these are probably part of
the same comet group.

--Rob
Sep 17 2002 19:14:20 Rob Matson
matsonr@saic.com
UPDATE 2002 September 17 - non-group comet in C3.  Additional

coordinates (1024x1024, 0,0 in upper left):

YYYY-MM-DD HH:MM Col Row
---------------- ---- ---
2002-09-17 17:18 702 497
17:42 703 496
18:18 704 494
18:42 704 493
19:42 705 488
20:18 705 487
20:42 706 486
21:18 706 484
21:42 706 483
22:18 705 481

Have not yet looked for it in C2... --Rob
Sep 17 2002 21:06:02 Rob Matson
matsonr@saic.com
Correction to earlier post (9/17 18:02:49) regarding Xavier's

comet entering the C2 field-of-view. I was fooled by a cosmic
ray hit at close to the right place and time. I only see
Xavier's comet in one frame -- 22:30 at Col 1000, Row 814.

--Rob
Sep 18 2002 01:36:32 Maik Meyer
maik@comethunter.de
Confirmation of Rob's non-Kreutz comet. Nice find, Rob! It will

be interesting to see if there's really a conncetion to SOHO-513
for which we still have no orbit.
By the way, the MPEC for Sebastians currently visible comet of
Sep 17, is out (2002-S17) - surprisingly no discoverers credit is
given.

Maik
Sep 18 2002 01:56:36 Xu Chen
sinahenry@21cn.com
Great,I can see this new comet now,but also haven't seen it in C2 images!It's really a bright one!
Sep 18 2002 02:51:13 Derek Hammer
derek@sungrazer.nascom.nasa.gov
Hello all, just a quick update. As Maik noted, there is an MPEC

out for Sebastian's bright comet that appeared at the edge of the
C3 FOV yesterday at ~13:42. Unfortunately, when these exceptional
comets appear I am not always available to take measurements. But
fear not, UVCS team members will be taking initial measurements
so they can observe these big ones, as happened in this case.
Sebastian, your name will be submitted to the IAU when I measure
the remaining positions. And I will look into your inquiry of
coincident claims from you and Xavier. Confirmations for all
claims, and orbits for previously confirmed comets, will be
current this weekend.

Finally, there is an obvious error in the table from my last red
post. It should read comets 514-516, NOT 414-416.

SOHO# Reported By Date Camera
--------------------------------------------
514 D. Evans 02/09/13 C3
515 J. Sachs 02/09/13-14 C3
516 R. Kracht 02/09/15 C2

Derek
Sep 18 2002 14:03:11 Michael Oates
mike@ph.u-net.com
Comet in realtime C2 images 18 Sept 2002

This maybe Rob's comet from C3

(0,0 in bottom left corner in 1024x1024 images)
Image Col Row
20020918_1606_c2.gif 876 718
20020918_1630_c2.gif 858 719
20020918_1654_c2.gif 839 721

Michael Oates
Sep 18 2002 14:09:17 Sebastian Hönig
Sebastian@sungrazer.org
Mike,


confirmation of your comet and it is definitely not Rob's find
of yesterday. This is probably the 11th member of the Kracht
group.

Regards, Sebastian
Sep 18 2002 14:11:28 Rob Matson
matsonr@saic.com
2002 Sep 18 UPDATE.  My non-group comet is now visible in C2.

Of the frames released so far, it is visible in the following
1024x1024 frames (0,0 in upper left corner):

YYYY-MM-DD HH:MM Col Row
---------- ----- --- ---
2002-09-18 16:06 876 305
16:30 858 304
16:54 839 302

So we have two non-Kreutz comets in C2 at the same time!

--Rob
Sep 18 2002 14:16:59 Sebastian Hönig
Sebastian@sungrazer.org
Rob and Mike.


Your objects coincide. Perhaps it actually _is_ Rob's find. We
have to wait... Sorry for the confusion :(

Sebastian
Sep 18 2002 14:22:54 Rainer Kracht
R.Kracht@t-online.de
There is definitely only one non-Kreutz in C2

(the coordinates from Mike and Rob are the same)
It's most probably Rob's C3 comet.

Rainer
Sep 18 2002 14:24:42 Rob Matson
matsonr@saic.com
Whoops -- I didn't realize Michael's coordinates were measured

from the lower left corner, so yes we're reporting the same
object. I'm quite confident that it is the same as my C3
comet from yesterday. Here are some of the later C3 coordinates
from which one can extrapolate to the expected position in
C2:

YYYY-MM-DD HH:MM Col Row
---------------- ---- ---
2002-09-18 04:42 686 463
05:18 683 462
05:42 681 461
06:18 677 459
06:42 674 459
07:42 668 456
08:18 663 455
08:42 660 454
09:18 656 453
09:42 652 453
10:20 647 452
10:42 644 451
11:18 639 450
11:42 636 450
12:18 632 450

Given the similarity of the orbit to SOHO-513 and Rainer's
coment today, does this mean that both are possible
Kracht comets? --Rob
Sep 18 2002 16:42:22 Craig Swanson
craig_mcp@hotmail.com
Possible comet in LASCO C3 512x512

0,0 in Bottom left

9/17 13:42 X=476 Y=106
14:18 X=474 Y=108
14:42 X=472 Y=109
15:18 X=470 Y=111

Craig
Sep 18 2002 16:48:36 Craig Swanson
craig_mcp@hotmail.com
Sorry think my report has already been posted.

Craig
Sep 18 2002 16:59:41 Rainer Kracht
R.Kracht@t-online.de
Sebastian's C3 comet has entered C2

time x y
2054 1014 868
2056 1010 866

0,0 in upper left corner

Rainer
Sep 18 2002 18:02:11 Rainer Kracht
R.Kracht@t-online.de
Rob's C3 comet has entered C2 at 12:54

(0,0 in upper left corner)

Date Time x y
20020918 1254 1018 322
20020918 1331 992 318
20020918 1354 974 316
20020918 1406 966 316

There is no doubt that it belongs
to the Kracht group!

Rainer
Sep 19 2002 12:39:19 Rainer Kracht
R.Kracht@t-online.de
possible comet in C2 images

b/w 512*512 from the LASCO website
enlarged to 1024*1024
0,0 in upper left corner

Date Time x y
20020919 1530 1014 322
20020919 1554 998 320
20020919 1606 988 318
20020919 1630 972 316

Rainer
Sep 19 2002 12:50:54 Scarmato Toni
toniscarmato@libero.it
Possibòe comet in c2 starting at


2002/09/19 1024x1024 0,0 top-left

1530 1015,322

other postiopns at next post

Toni Scarmato
Sep 19 2002 12:53:42 Scarmato Toni
toniscarmato@libero.it
Update position comet non Kreutz


2002/09/19

1530 1015,322
1554 1000,320
1606 990,320


Regards,

Toni Scarmato
Sep 19 2002 13:09:46 Rainer Kracht
R.Kracht@t-online.de
UPDATE Kracht group comet in C2 images

1024*1024 0,0 in upper left corner

Date Time x y
20020919 1530 1015 322
20020919 1554 998 320
20020919 1606 990 318
20020919 1630 972 316 enlarged from 512*512
20020919 1654 954 314 enlarged from 512*512
20020919 1706 946 312 enlarged from 512*512

Rainer
Sep 19 2002 13:11:59 Maik Meyer
maik@comethunter.de
Congrats Rainer... another one for the Kracht group!


Maik
Sep 19 2002 13:54:46 john sachs
imagephoto@blazenet.net

C3 images Monitoring
possible comet
0,0 Top Left x and y Coordinates
C3 1024x1618 Images x and y Coordinates
20020919 1618 C3 1011 655
20020919 1542 C3 1020 664

John
Sep 19 2002 14:17:44 john sachs
imagephoto@blazenet.net
Sorry,ignore my post below of Sep 19 2002 13:54:46.

John
Sep 20 2002 12:04:17 Michael Oates
mike@ph.u-net.com
Possible Kreutz group comet in real time C3 images.

Plus other before these times
(0,0 in bottom left corner in 1024x1024 images)
Image Col Row
20020920_1342_c3.gif 718 405
20020920_1418_c3.gif
20020920_1442_c3.gif

Michael Oates
Sep 20 2002 12:06:20 john sachs
imagephoto@blazenet.net
C3 images Monitoring 

possible comet diffused
0,0 Top Left x and y Coordinates
C3 1024x1618 Images x and y Coordinates
20020920 1442 C3 706 610
20020920 1418 C3 711 614
20020920 1342 C3 719 618
20020920 1242 C3 731 627
John
Sep 20 2002 12:19:28 Michael Oates
mike@ph.u-net.com
UPDATE - Possible Kreutz group comet in real time C3 images.


(0,0 in bottom left corner in 1024x1024 images)
Image Col Row
20020920_1142_c3.gif 742 388
20020920_1218_c3.gif 734 393
20020920_1242_c3.gif 731 397 (approx, faint)
20020920_1342_c3.gif 718 405
20020920_1418_c3.gif 711 410
20020920_1442_c3.gif 705 414

Michael Oates
Sep 20 2002 12:20:44 sachs imagephoto@blazenet.net
john
I believe I reported the possible comet that

Mike just reported. I used top left and did not
see that mike used bottom left. congrats mike.
John
Sep 20 2002 12:21:53 David Evans
dave.nokia3330@orange.net
Monitoring a small real-time 'movement' on a similar path

to Mike's object.

2002/09/20

13:42 834, 713
14:18 827, 707

This may turn out to be noise... Awaiting further images...

- Dave
Sep 20 2002 13:42:08 David Evans
dave.nokia3330@orange.net
A remarkably difficult object to see !!!

Visible in real-time C3 images of 2002/09/20

It took me some time to convince myself to post this report :o)

The object is moving horizontally right-to-left towards the Sun.
Perhaps someone can view the object under higher magnification as
the image viewer I am using (XnView) does not lock the pan angle.

1024x1024 0,0 Top Left

08:18 856, 506
08:42 852, 506
09:18 847, 506
09:42 842, 506
10:20 836, 507
10:42 833, 507
11:18 830, 507
11:42 826, 507
12:18 818, 507
14:18 798, 507
14:42 791, 506

A high resolution monitor with correct screen brightness and
contrast adjustment essential...

- Dave

Sep 20 2002 14:57:20 David Evans
dave.nokia3330@orange.net
UPDATE: To my post "A remarkably difficult object to see !!!"


1024x1024 0,0 Top Left

15:42 782, 506 (low contrast between object and background)
16:18 773, 506 (low contrast between object and background)
16:42 766, 505
17:18 758, 505

Still unsure as to what this could be...

- Dave
Sep 20 2002 18:42:55 Rob Matson
matsonr@saic.com
2002 Sep 20 -- Another Kracht comet in C3!

1024x1024 frames (0,0 in upper left corner):

YYYY-MM-DD HH:MM Col Row
---------- ----- --- ---
2002-09-20 19:42 702 479
20:18 702 477
20:42 701 476
21:18 700 474

--Rob
Sep 20 2002 18:59:28 Sebastian Hönig
Sebastian@sungrazer.org
WOOOOW! Rob, confirmation of your Kracht comet.


I think this is one of Rainer's luckiest days as his groups
overtook the Marsden group and we now can say: Marsden group is
a subgroup of the Kracht group... :)

Regards, Sebastian
Sep 20 2002 19:02:28 Rainer Kracht
R.Kracht@t-online.de
Confirmation of Rob's C3 (Kracht group) comet.

(nearly) unbelievable! (but it's there)

Rainer
Sep 20 2002 19:04:09 Rob Matson
matsonr@saic.com
UPDATE 2002 Sep 20 -- Probable Kracht comet in C3.  Tracked

it back to some earlier frames. 1024x1024 frames (0,0 in upper
left corner):

YYYY-MM-DD HH:MM Col Row
---------- ----- --- ---
2002-09-20 16:42 702 489
17:18 702 486
18:42 702 482
19:42 702 479
20:18 702 477
20:42 701 476
21:18 700 474
21:42 699 473

September 2002 has been a surprising month! --Rob
Sep 20 2002 21:21:03 john sachs
imagephoto@blazenet.net
C3 images Monitoring 

possible comet diffused
0,0 Top Left x and y Coordinates
C3 1024x1618 Images x and y Coordinates
20020921 0018 C3 719 558
20020920 2342 C3 733 562
20020920 2318 C3 741 563
20020920 2318 C3 748 564
update to follow
John
Sep 20 2002 21:24:27 john sachs
imagephoto@blazenet.net
 My post of Sep 20 2002 21:21:03

the last time frame should read
2218 not 2318
Thanks
John
Sep 20 2002 21:45:30 John Sachs
imagephoto@blazenet.net
I withdraw my post 

of Sep 20 2002 21:21:03.
Once again noise. A novice
mistake. Thanks all.
John
Sep 21 2002 03:25:07 Maik Meyer
maik@comethunter.de
Confirmation of Rob's Kracht comet. Indeed unbelievable!

One correction regarding Sebastian's statement. The current
numbers of the group members are (in brackets the possible ones
with until now no orbit) Meyer: 31 (+1), Marsden: 13 (+1), Kracht:
10 (+3 or +4*). *Rob's object of Sep. 05, may be a deviated Kracht comet;
here we have to wait for the orbit.

Regards, Maik
Sep 21 2002 04:00:11 David Evans
dave.nokia3330@orange.net
Possible new comet in C3


2002/09/20 1024x1024 0,0 Top Left

04:18 799 695

Update follows

- Dave
Sep 21 2002 04:07:41 David Evans
dave.nokia3330@orange.net
UPDATE: an error in previous post - date should read 2002/09/21


1024x1024 images 0,0 Top Left

01:42 825, 712
02:18 820, 709
02:42 816, 706
04:18 800, 695

Looks like the NASA servers are causing a few problems again.

- Dave
Sep 21 2002 12:14:05 Tony Hoffman
tonyhoffman@earthlink.net
Possible other-group comet in realtimeC2 b/w images

512x512, 0,0 in upper left

Sept 21, 11:06 486, 159

More positions to follow.

--Tony
Sep 21 2002 12:17:29 Tony Hoffman
tonyhoffman@earthlink.net
Possible other-group comet in realtimeC2 b/w images

512x512, 0,0 in upper left

Sept 21, 11:06 486, 159

More positions to follow.

--Tony
Sep 21 2002 12:20:28 Tony Hoffman
tonyhoffman@earthlink.net
Possible Kracht(?) group comet in C2 b/w images,  512 x 512, 0,0 in upper left:


Sept. 21

12:06 466, 156
11:54 470, 156
11:30 478, 157
11:06 486, 159

fading (faint at 12:06)

--Tony
Sep 21 2002 12:55:59 Rob Matson
matsonr@saic.com
Bright comet in real-time C3 images.  This may have been

reported late last night. Have to extrapolate coordinates.
A couple coordinates:

2002-09-21 08:42 753, 661
09:42 742, 653

0,0 in upper left corner. --Rob
Sep 21 2002 13:11:49 Tony Hoffman
tonyhoffman@earthlink.net
Update: Kracht(?) comet in LASCO C2 images

(1024 x 1024, 0,0 in upper left corner)

20020921 1034 997,320
20020921 1056 982,317
20020921 1106 974,315
20020921 1130 957,315
20020921 1154 940,313
20020921 1206 931,312

Is this Rob’s, from yesterday?

--Tony H.
Sep 21 2002 13:11:55 Tony Hoffman
tonyhoffman@earthlink.net
Update: Kracht(?) comet in LASCO C2 images

(1024 x 1024, 0,0 in upper left corner)

20020921 1034 997,320
20020921 1056 982,317
20020921 1106 974,315
20020921 1130 957,315
20020921 1154 940,313
20020921 1206 931,312

Is this Rob’s, from yesterday?

--Tony H.
Sep 21 2002 13:13:28 Tony Hoffman
tonyhoffman@earthlink.net
Sorry for the double postings--quite unintended.


Tony H.
Sep 21 2002 13:13:44 David Evans
dave.nokia3330@orange.net
UPDATE: 'Probable comet' is now a definite Kreutz in real-time C3


2002/09/21

1024x1024 images 0,0 Top Left

01:42 825, 714
02:18 819, 710
02:42 815, 707
04:18 799, 695
08:42 753, 661 short tail
09:42 742, 653 "
10:23 734, 647 "
10:45 730, 644 "


- Dave
Sep 21 2002 13:27:49 Rob Matson
matsonr@saic.com
Hi All -- my earlier post on the C3 Kreutz comet is

clearly Dave's comet from last night. Congrats, Dave! --Rob
Sep 21 2002 14:11:56 Rainer Kracht
R.Kracht@t-online.de
Tony: Yes, your C2 comet

is Rob’s, from yesterday.

Rainer


Sep 21 2002 15:39:39 Rainer Kracht
R.Kracht@t-online.de
Dave's C3 Kreutz group comet has entered C2

Date Time x y
20020921 1854 1008 878
20020921 1931 964 846

Rainer
Sep 21 2002 15:40:20 Rob Matson
matsonr@saic.com
There's a dim Kreutz comet trailing Dave's C3 find in

the realtime images. Some 1024x1024 coordinates:

9-21-2002 16:42 693, 624
17:18 686, 618
17:42 679, 614
18:18 670, 607

(0,0 in upper left). --Rob
Sep 21 2002 16:06:21 Rob Matson
matsonr@saic.com
Update:  with the 18:42 frame, I'm not so sure the

C3 trailer is anything but noise. The 18:18 frame
is the only one that has a statistically significant
signal above background. --Rob
Sep 21 2002 20:04:04 John Sachs
imagephoto@blazenet.net
C3 images Monitoring 

possible comet diffused
something there maybe just noies
0,0 Top Left x and y Coordinates
C3 1024x1618 Images x and y Coordinates
20020921 2218 C3 798 685
20020920 2142 C3 802 689
20020920 2118 C3 805 692
20020920 2042 C3 808 699
20020920 1942 C3 812 703
John
Sep 21 2002 20:31:18 John Sachs
imagephoto@blazenet.net
My last post on Sep 21 2002 20:04:04 the dates should all read 921

John
Sep 21 2002 21:27:35 John Sachs
imagephoto@blazenet.net
I withdraw my post of

Sep 21 2002 20:04:04 below.
It Was noise and not a proper
path for a Kreutz comet.
John
Sep 22 2002 15:02:53 Derek Hammer
derek@sungrazer.nascom.nasa.gov
Hi everyone, I don't recall September ever being this busy, very

nice. Well, I didn't quite meet my prediction that all comets
would be confirmed and measured by this weekend. However, I did
manage to look at almost all claims since my last post (I still
need to check D. Evans' claim for an object in C3 on 9/20).
Also, I reported measurements for SOHO 512-518. I have given both
Xavier and Sebastian credit for SOHO 518 as it does appear they
both reported the same comet at exactly the same second--what
are the odds? Here are the confirmations as I see them...

SOHO# Reported By Date Camera
--------------------------------------------
517 S. Hoenig 02/09/17-18 C2,C3
518 X. Leprette& 02/09/17 C2,C3
S. Hoenig
519 R. Matson 02/09/17-18 C2,C3
520 R. Kracht 02/09/19 C2
521 M. Oates 02/09/20 C3
----D. Evans Claim 9/20 8:18-17:18 C3-----
52x R. Matson 02/09/20-21 C2,C3
52x D. Evans 02/09/21 C2,C3

Well, either things have slowed down today, or Maik, Rainer, &
Sebastian are at Oktoberfest. I wish I could attend.

Derek
Sep 22 2002 18:41:29 David Evans
dave.nokia3330@orange.net
Possible small Kreutz in real-time C3 of 2002/09/22


A very short-lived object. Only visible in 5 images...

1024x1024 0,0 Top Left

16:42 669, 602 faint
17:18 659, 593 gradually brightening
17:42 653, 588
18:18 644, 580 Maximum magnitude
18:42 638, 575

Movement looks ok, but nothing impressive...

- Dave
Sep 22 2002 21:13:52 John Sachs
imagephoto@blazenet.net
C3 images Monitoring 

possible comet
0,0 Top Left x and y Coordinates
C3 1024x1618 Images x and y Coordinates
20020922 2218 C3 642 536
20020922 2142 C3 644 537
20020922 2118 C3 657 544
20020922 2042 C3 662 545
John
Sep 22 2002 21:48:27 John Sachs
imagephoto@blazenet.net
On my post below of

Sep 22 2002 21:13:52
The xy numbers do not look
right.Perhaps this is noise.
Will re-check.
John
Sep 23 2002 11:24:58 John Sachs
imagephoto@blazenet.net
My below post of

Sep 22 2002 21:48:27.
Appears to have been noise.
Thanks
John
Sep 23 2002 15:27:51 Sebastian Hönig
Sebastian@sungrazer.org
New sungarzer in LASCO C3 images


Date, Sep 23, 2002

1024 x 1024, 0,0 upper left

15:42 734,648

More soon

Sebastian Hönig
Sep 23 2002 15:35:07 Sebastian Hönig
Sebastian@sungrazer.org
New sungarzer in LASCO C3 images, starting 20020923_1518_c3.gif

(Update with more positions and confirmation)

Date: Sep 23, 2002

Description:
faint, elongated, nothing spectacular

Positions: (0,0) upper left, 1024 x 1024

Time (x,y)
15:18 739,652
15:42 734,648
16:18 727,643
16:42 723,640

Sebastian Hönig
Sep 23 2002 16:20:18 John Sachs
imagephoto@blazenet.net
C3 images  Monitoring 

possible comet diffused, above Sebastians.
May be only noise.
0,0 Top Left x and y Coordinates
C3 1024x1618 Images x and y Coordinates
20020923 1642 C3 792 584
20020923 1618 C3 800 590
20020923 1542 C3 809 592
20020923 1518 C3 816 595
John
Sep 23 2002 16:46:59 Sebastian Hönig
Sebastian@sungarzer.org
Possibly another sungrazer in C3 images, 20020923_1618_c3.gif


Date: Sep 23, 2002

Description:
faint, diffuse, exactly the same speed and direction like the
first one I reported

Positions: (0,0) upper left, 1024 x 1024

Time (x,y)
16:18 763,694
16:42 757,689
18:42 736,674 b/w enlarged

Note: I have no more time to check this. Maybe noise but it looks
somehow concincing. It is _not_ at the positions John reported.

Sebastian Hönig
Sep 23 2002 16:51:34 John Sachs
imagephoto@blazenet.net
My post of 

Sep 23 2002 16:20:18
should read 1024x1024
images used.
Thanks
John
Sep 23 2002 18:42:10 John Sachs
imagephoto@blazenet.net
Disregard my post on

Sep 23 2002 16:46:59
It looks
like noise. I will leave
the faint objects to the
experienced.Congrats Sebastian.
John
Sep 23 2002 23:14:31 Rob Matson
matsonr@saic.com
2002 Sep 24 -- Kreutz comet enters C2 at 00:06.  Based on the

timing, I assume this is Sebastian's comet reported earlier
in C3? 1024x1024 frames (0,0 in upper left):

YYYY-MM-DD HH:MM Col Row
---------- ----- --- ---
2002-09-24 00:06 1018 893
00:30 992 873
00:54 964 851

--Rob
Sep 24 2002 03:44:10 Sebastian Hönig
Sebastian@sungrazer.org
I withdraw my claim of a possible second sungrazer dated Sep 23 

2002 16:46:59.

Regards, Sebastian
Sep 24 2002 09:54:01 Scarmato Toni
toniscarmato@libero.it
Possible comet in c2 starting at


20020924 0006 1020,894

1024x1024 0,0 top-left corner

other positions at next post

Toni Scarmato
Sep 24 2002 09:57:42 Rainer Kracht
R.Kracht@t-online.de
possible Kreutz comet in C3 images

b/w 512*512 from the LASCO website
enlarged to 1024*1024
0,0 in upper left corner

Date Time x y
20020924 0418 752 700
20020924 0642 728 684
20020924 0742 718 676

Rainer

Sep 24 2002 10:03:46 Scarmato Toni
toniscarmato@libero.it
Sorry!


Comet already reported!!!!


Toni
Sep 24 2002 10:07:54 Scarmato Toni
toniscarmato@libero.it
Possible comet in C3 

positions 1024x1024 0,0 top-left

20020924

0318 764,711
0342 760,707
0418 754,702

I am waiting other images to confirm

Regards,

Toni Scarmato
Sep 24 2002 10:09:10 Rainer Kracht
R.Kracht@t-online.de
Ignore my report Sep 24 2002 09:57:42

the third image is a star.

Rainer
Sep 24 2002 10:24:02 Scarmato Toni
toniscarmato@libero.it
I not can confirm my last report in C3


Regards,

Toni Scarmato
Sep 24 2002 14:16:59 David Evans
dave.nokia3330@orange.net
Monitoring a movement of a possible new comet in real-time C3 of

2002/09/24 1024x1024 0,0 Top Left

16:18 727, 646
16:42 723, 643
17:18 715, 637

Possibly just noise. Awaiting further images...

- Dave

Sep 24 2002 15:15:12 David Evans
dave.nokia3330@orange.net
UPDATE to possible comet in real-time C3. Two more positions are

available, one preceeding and the other following the times given
in my first post of Sep 24 2002 14:16:59

2002/09/24 1024x1024 0,0 Top Left

15:42 736, 653
16:18 727, 646
16:42 723, 643
17:18 715, 637
17:42 709, 633

A faint object with a very linear movement. There may also be a
possible companion object at +7, +3

- Dave
Sep 24 2002 15:40:01 John Sachs
imagephoto@blazenet.net
Possible Comet in Real Time.

0,0 Top Left x and y Coordinates
C3 1024x1024 Images x and y Coordinates
20020924 1842 C3 799 642
20020924 1818 C3 803 645
20020924 1742 C3 812 652
20020924 1718 C3 818 655
John
Sep 24 2002 16:04:29 Maik Meyer
maik@comethunter.de
John and Dave,


please check your coordinates. The objects are moving quite
erratic, accelerating and decelerating. Without looking at
it I can say that it is noise.

Daves object: x (in pix/hr) 18 -> 8 -> 16 -> 12
y 14 -> 6 -> 12 -> 8

Johns object: 8 -> 18 -> 8
6 -> 14 -> 6

Maik
Sep 24 2002 17:50:17 David Evans
dave.nokia3330@orange.net
Maik, thank you for replying with the figures you give below.


Daves object: x (in pix/hr) 18 -> 8 -> 16 -> 12
y 14 -> 6 -> 12 -> 8


I did a quick back of an envelope calculation and got the
following figures for my object -

(in pix/hr)
x = 15 -> 10 -> 13 -> 15
y = 12 -> 7.5 -> 10 -> 10 ->

Assuming that both x and y positions are likely to be in error
of plus or minus 1 with the image viewer I am using, I find that
over the 5 images by applying this tolerance, X would remain
consistant at 13 and Y would remain consistant at 10.

Another rough check I do with C3 'possible comets' is to check
that the pixel movement in X and in Y is half as much for the 20
minute gap between images when compared to the 40 minute gap.
Again I allow a tolerance of plus and minus 1 pixel for all
measurements. The object I reported seemed to work out fine when
applying this quick rule-of-thumb.

- Dave
Sep 24 2002 17:58:17 Sebastian Hönig
Sebastian@sungrazer.org
Hi Dave,


I checked your object and saw absolutely nothing at your
positions - as well as for John's position. Actually the best
test is whether it can be seen in the in the images or not
(without "processing" or anything else, just the raw images).
I think it is obvious what object were confirmed in the last
months and years and what so fail confirmation.

Regards, Sebastian
Sep 24 2002 18:28:58 John Sachs
imagephoto@blazenet.net
Update to my post of

Sep 24 2002 15:40:01.
Real Time C3
0,0 Top Left x and y Coordinates
C3 1024x1024 Images x and y Coordinates
20020924 2118 C3 782 619
20020924 2142 C3 789 625
20020924 2018 C3 795 630
I see what Maik was saying is
Correct. Perhaps I was off
on nubers.Yet I see something here.
Thank You
John
Sep 24 2002 18:43:12 John Sachs
imagephoto@blazente.net
My post of

Sep 24 2002 18:28:58
Should have read
20020924 2118 C3 782 619
20020924 2042 C3 789 625
20020924 2018 C3 795 630
for the time frames.
John
Sep 24 2002 19:07:27 John Sachs
imagephoto@blazenet.net
I will withdraw my

post of Sep 24 2002 15:40:0
I have seen too much noise latley.
I see that Maik and Sebastian are correct
on the numbers for my object.
I thank them.
John

Sep 24 2002 19:32:00 David Evans
dave.nokia3330@orange.net
Hi Sebastian,


I do hope Derek will forgive us all for this brief and open
discussion. I do realise that the Finder's Page is NOT a
platform for debate, but by way of education this may indeed
provide an ideal opportunity to clarify what makes a good claim
and what does not - especially for any newbies to this list.

Yes, the images I used for the 'find in question' are indeed
unprocessed raw frames downloaded straight from the nasa.gov
site. Incidentally, the multimedia work I do on computers often
involves the need for a meticulous eye and attention to detail,
especially as the work I do with images so frequently involves
manipulation down at the single pixel level. I have just checked
the C3 images once again and I can confirm that I do indeed see
a small and faint 'object' at the reported positions shown in my
claim. Whether that is because I have a good eye for detail
(perhaps too much detail!) or an excellent well high-definition
monitor and display is something else open to debate :o)

I will agree with you that the object is very faint by usual
standards. And I do understand that because the C2/C3 images are
the only source of recording these sungrazing comets (and as
they cannot be confirmed by any other simultaneous method of
observation) that in order to satisfy Derek a claim really has
to be absolutely 99% certain for the object to be recognised as
a true comet.

I would not by any means suggest that my claim is 99% certain,
it is not. However, I have reported the 'find' to this list as
being only a 'possible or probable faint comet'. The movement
the object makes, I believe, appears to be valid. And at least
if someone else finds the same object again at a later date -
and my claim has proven to be unsuccessful - then they would at
least know not to post what may otherwise become a duplicate
report.

On this point, perhaps it would be a good idea if someone
compiled a list of 'Unsuccessful Claims'. In this respect, I
offer the services of my Virtual Sungrazer Observatory website
(DVSO) http://www.dvso.pwp.blueyonder.co.uk
and I would gladly give my time to compile the list myself and
make it public over the net if this would be of help to others.
That way if the same false object is 'rediscovered' by someone
else, a quick check of the unsuccessful list would prevent it
from being re-reported. Considering the amount of individuals
looking through the archive images, a list of this sort I
believe would be very beneficial indeed.

I have noticed that very few faint and diffuse 'possible finds'
ever make it to the SOHO list. I have also noticed that if the
object doesn't show a glint or two of white pixels within it
then the object stands very little chance of being considered
real - and obviously Derek needs to be 99% sure before commiting
himself to confirming a new comet discovery.

To date I have found 9 SOHO comets in the 4 months I have been
searching for them. I'm sure I still have a lot to see and a lot
to learn. But searching the C3 and C2 images would be made so
much easier for newbies (I still consider myself a newbie!) if
as I suggest, a list of 'false claims' were to be compiled and
made available to view. That way anyone new to this group would
stand a fair chance of knowing the minimum specifications or
criteria it takes to make a successful claim.

I will still keep reporting all objects that appear to move in a
convincing way. And whether the claim is successful or not,
either way the recording and knowledge of that particular object
may be of use to others. Finally, to further improve upon the
idea of an 'Unsuccessful Claims List' it would be a good idea to
also show some animated gifs of these objects so at least anyone
new can begin to understand why their claim has not made the
grade.

I do hope Derek will not shout at me too loud for taking up this
valuable Finder's Page space... All the above of course is said
most politely in good faith and may hopefully be constructive.

- Dave



Sep 25 2002 08:56:43 John Sachs
imagephoto@blazenet.net
C3 images Monitoring

possible comet
0,0 Top Left x and y Coordinates
C3 1024x1024 Images x and y Coordinates
20020924 2118 C3 953 705
20020924 2042 C3 958 707
20020924 2018 C3 962 709
20020924 1942 C3 964 711
20020924 1842 C3 976 715
update too follow
John
Sep 25 2002 09:17:32 John Sachs
imagephoto@blazenet.net
My post below is probably to faint

and probably noise. I do see it
in other frames.I shall wait and see.
John
Sep 25 2002 17:47:38 jim ruebush
ruebush@avalon.net
This one may have been reported by now. But just in case...


Daily mpeg 020917_C3.mpg in shows up at 14:18 UT at the
4 oclock position headed straight for the sun.

Daily mpeg 020918_C3.mpg continues into sun and not
visible after 22:18 UT.

Daily mpeg 020918_C2.mpg shows up at 21:08 UT and
disappears at 22:30 UT.


Jim Ruebush
Sep 25 2002 18:29:44 Derek Hammer
derek@sungrazer.nascom.nasa.gov
OK, if anyone would like to follow the discussion of Dave's

comments on 9/24 (I encourage everyone to do so) please go to the
Yahoo group: sohohunter at http://groups.yahoo.com/group/sohohunter/

As noted in this discussion, there have been too many false claims
lately and this must be remedied. We simply do not have enough
resources to continually check these claims and the page is
becoming to difficult to follow. And since UVCS people are
occasionally checking this page for possible finds, we need to
keep our false reports down. Please remember that this page
is only for claims you are CONFIDENT are real. Also, there have
been quite a few claims with less than four positions and the
reporter mentions that the object is dim, weak, possible, probably
noise, etc. This is not acceptable. You must have 4 positions--the
only case where this is tolerated is when the object is UNDENIABLY
OBVIOUS. An example would be SOHO 517 (C/2002 S2) which was very
bright upon entering the C3 FOV. Now, if a false claim is
submitted (it happens), I do appreciate when the reporter
retracts the claim. Also, it is appreciated when the more
experienced people offer false-claim reporters an explanation why
they should have never reported the object. It is this advice that
helps new people learn from their mistakes.

In general, I thank everyone for their enthusiasm and I hate when
we must talk protocol as this is supposed to be FUN!

That being said, I have looked at the claims and have only
accepted S. Hoenig's September 23-24 comet. The now current
SOHO numbers are listed below.

Jim, that object was indeed reported the day it appeared and is
listed as SOHO517. Unfortunately, due to the high volume of false
claims of late, this report has been long removed from the page.
You can look at old past claims in the archive reports---the link
can be found at the bottom the 'Found Something?" page. Good luck!

By the way, if you haven't already seen it, you can look at UVCS
Lyman alpha observations of SOHO517 at...

http://sohowww.nascom.nasa.gov. Under 'What's New' you'll see a
link entitled 'A Well-Studied Comet'.


SOHO# Reported By Date Camera
--------------------------------------------
522 R. Matson 02/09/20-21 C2,C3
523 D. Evans 02/09/21 C2,C3
524 S. Hoenig 02/09/23-24 C2,C3


Derek

Sep 26 2002 08:57:10 michael boschat
aa063@chebucto.ns.ca
Comet in C3 at 20020926_0218 UT


Data to follow..

Mike Boschat

Sep 26 2002 09:03:25 michael boschat
aa063@chebucto.ns.ca
Comet position in C3:


Using 1024 size but comet may be of by several
pixels:

Images in C3

Lower left images are 0, 460

Date Image Size XY Coordinates
--------------------------------------------
20020926_0218 1024 x 1024 482, 95
20020926_0242 1024 x 1024 476, 89
20020926_0318 1024 x 1024 469, 84
20020926_0342 1024 x 1024 464, 80

Mike Boschat
Sep 26 2002 09:03:46 john sachs
imagephoto@blazenet.net
C3 images Monitoring a

possible comet
Very small.
0,0 Top Left x and y Coordinates
C3 1024x1024 Images x and y Coordinates
20020926 0342 C3 693 624
20020926 0318 C3 698 628
20020926 0242 C3 704 632
20020926 0218 C3 709 636
John
Sep 26 2002 09:06:53 Scarmato Toni
toniscarmato@libero.it
Possible comet in C3 starting at


20020926 0142 716,641


other positions at next post

Toni Scarmato
Sep 26 2002 09:12:10 Scarmato Toni
toniscarmato@libero.it
Update comet in c3


20020926

0142 716,641
0218 709,636
0242 704,632
0318 698,628
0342 693,624

1024x1024 0,0 top-left corner


Regards,

Toni Scarmato
Sep 26 2002 09:34:09 Scarmato Toni
toniscarmato@libero.it
Possible faint comet in c2


positions 1024x1024 0,0 to-left

20020926


1054 927,765
1106 926,764
1130 922,762
1154 919,760
1206 918,759
1230 915,756

Regards,

Toni Scarmato
Sep 26 2002 09:44:22 Scarmato Toni
toniscarmato@libero.it
Another possible comet in c2

starting at

20020926

0854 1004,902
0906 986,890
0930 963,872



Regards,

Toni Scarmato

Sep 26 2002 09:59:01 Maik Meyer
maik@comethunter.de
Confirmation of Mike Boschat's comet (I suspect this is the very

same later reported by John and Toni, although I don't get the
coordinates to match).

For the second claim by Toni I can only say that I see nothing but faint noise. The third claim by Toni (if there is anything real)
might be the C3 comet entering C2.

Maik
Sep 26 2002 10:02:22 Scarmato Toni
toniscarmato@libero.it
Regarding my last report in c2 I am in agreement

with Mike.

Probably is the same comet observed in C3.

Regards,

Toni
Sep 27 2002 11:33:25 Rainer Kracht
R.Kracht@t-online.de
possible comet in C3 images

20020927 0642 450 662
20020927 1350 490 659
and many more

Rainer
Sep 27 2002 11:47:34 John Sachs
imagephoto@blazenet.net
C3 images   

possible comet
0,0 Top Left x and y Coordinates
C3 1024x1024 Images x and y Coordinates
20020927 2118 C3 447 636
Looks like another one here Rainer
Congrats
Sep 27 2002 11:49:18 XingMing Zhou
zh_x_m@163.net
Rainer and John, This is Mercury.


XingMing
Sep 27 2002 11:49:21 John Sachs
imagephoto@blazenet.net
The time should have read 0742 on my post below

John
Sep 27 2002 11:50:17 Rainer Kracht
R.Kracht@t-online.de
UPDATE C3 comet

it's real!
but I think it's (a faint) Mercury!

Rainer
Sep 27 2002 12:02:35 John Sachs
imagephoto@blazenet.net
Never mind my post

below.
I was looking
at a image noise
John
Sep 28 2002 20:12:50 John Sachs
imagephoto@blazenet.net
C3 images   

possible comet
0,0 Top Left x and y Coordinates
C3 1024x1024 Images x and y Coordinates
20020928 2242 C3 968 616
20020928 2218 C3 970 618
20020928 2142 C3 973 621
20020928 2118 C3 978 624
This looks good to me
John
Sep 28 2002 20:22:07 John Sachs
imagephoto@blazenet.net
My last post top number should have read

20020928 2318 C3 968 616
for the time
John
Sep 28 2002 20:52:41 John Sachs
imagephoto@blazenet.net
My post below is final

possible comet
0,0 Top Left x and y Coordinates
C3 1024x1024 Images x and y Coordinates
20020928 2318 C3 968 616
20020928 2218 C3 970 619
20020928 2142 C3 974 622
20020928 2118 C3 978 625
John
Sep 28 2002 21:04:07 John Sachs
imagephoto@blazenet.net
Ok,I just had a lesson in Noise 

and pixel movement. I see now
that the NUMBERS are not accurate
on my below post.
Speed is not constant.
I withdraw my below posts.
Humbly
John
Sep 29 2002 12:06:32 Asier Redondo
publired@euskalnet.net
in the image 2002/09/28 17:54, you can see in the top-centre and a few to the right a point, and in the nex images you can see it going to the right. 

I see it at 2002/09/29 17:56 Greenwich
I see with C2 in http://soho.nascom.nasa.gov/data/realtime/realtime-c2.html

Asier Redondo
publired@euskalnet.net
Spain
Sep 29 2002 14:16:36 Derek Hammer
derek@sungrazer.nascom.nasa.gov
Asier, to make a claim please submit the date, time, and

coordinates of the object. Also, submit the coordinates for at
least 4 consecutive images (and tell us where (0,0) is). If you
are not sure about the format, just copy the form used by people
who have found comets in the past. Also, please have a look at
the "Found Something?" link where we list examples of objects
that are commonly mistaken as comets. Good luck.

Derek
Sep 29 2002 15:14:18 Robin Miller
robinmiller@max.inter.net
To: Doug Bieseker


I reported the following comet find on Sept. 16, 2002.

"
Sep 16 2002 21:00:25 Robin Miller
--------------------------------------------------------------------------------
robinmiller@max.inter.net
Lasco (Naval Observatory) C3 02 Sept17 at 0:04

Comet moving from lower left-hand corner,

to the left of the handle. inwards to the Sun."

For some reason I can not find that anyone else previously reported the comet and would like to know if I have been credited with its discovery as I do not see it anywhere on the site.

If I filed the report incorrectly please let me know via email at robinmiller@max.inter.net.

I do not see any other mention or retraction that this was not a discovery. Any assistance you may provide will be of great assistance.

Thank you,
Robin Miller




Sep 30 2002 10:27:32 Scarmato Toni
toniscarmato@libero.it
Possible comet in C3 starting at


20020930 816x562 b/w image 0,0 top-left

1342 474,392


other postions at next post


reagrds,

Toni Scarmato
Sep 30 2002 10:58:10 Scarmato Toni
toniscarmato@libero.it
Sorry but I Have made an error with cm and pixels


Possible comet

Positions of possible comet in C3

20020930 812x562 pixels 0,0 top-left

1342 377,278
1418 333,278
1442 330,277


Kranch Group?

Regards,

Toni Scarmato
Sep 30 2002 11:01:50 Xavier Leprette
xavier.leprette@wanadoo.fr
A possible non Kreutz comet in a real-time C3 images now.


The object is fairly bright and it is visible in 3 images on
2002/09/30 from 13:42 to 1446 UT.
The suspect is moving towards the sun.

Approximate positions: (0,0) upper left, 512 x 512 images
col,row
13:42 333,227 BW Image
14:18 331,227 BW Image
14:46 330,226 BW Image

Is it a planet ?

Xavier Leprette
Sep 30 2002 11:07:40 XingMing Zhou
zh_x_m@163.net
possible comet in C3 now.

812X562(B/W)
0,0 in upper left corner

Images Col, Row

1342 333, 277
1418 331, 277
1446 330, 276
Sep 30 2002 11:08:10 Scarmato Toni
toniscarmato@libero.it
Update possible comet in C3.


The last postions in my previous report is
1446 330,277 b/w images.

The comet seem visible also in c2 images at
positions 812x562 0,0 top-left

20020930

1406 486,109
1430 470,107


Regards,

Toni Scarmato
Sep 30 2002 11:21:49 Sebastian Hönig
Sebastian@sungrazer.org
Confirmation of the Kracht group comet (probably first reported

by Toni).

For all those in the US: Hey, the comet was visible first in
23:18 and perhaps even earlier - that's your time...

Regards, Sebastian
Sep 30 2002 11:33:27 XingMing Zhou
zh_x_m@163.net
It's real comet, visible from 1342 to 1522.Toni,Confirmation!


XingMing
Sep 30 2002 11:43:17 Scarmato Toni
toniscarmato@libero.it
Yes!

The comet is visible in c3 also at

812x562 0,0 top-left

1522 328,277

Real comet probably Rainer Group.

Thanks XingMing


Toni
Sep 30 2002 13:22:47 David Evans
dave.nokia3330@orange.net
Is this simply an image artifact I am seeing or a small object

with a possible curved path?

Recent C2 images. 1024x1024 0,0 Top Left.

2002/09/29

20:42 674, 499
21:18 676, 497
21:42 678, 495
22:18 681, 494
23:18 686, 490
23:42 687, 489
00:18 688, 487
00:42 688, 485

Perhaps one of the experts in the group could give an opinion.
Please disregard this posting if there is no positive follow-up
but this little object (whatever it is) has got me curious...

Many thanks,

- Dave
Sep 30 2002 13:27:34 David Evans
dave.nokia3330@orange.net
An error in my previous posting.....  


The object and its positions refer in fact to the C3 images -
not C2

- Dave
Sep 30 2002 13:32:21 Rob Matson
matsonr@saic.com
Hi All,


An interesting find by Tony et. al. in C3 today -- people
have commented that it is a probable Kracht comet, but
I don't think the orbit is a match. Indeed, it does not
match any of the standard families -- Kreutz, Kracht, Meyer
or Marsden. Kracht is the closest, but this comet is too
far south if I've done my orbital modeling correctly. --Rob
Sep 30 2002 14:42:44 Rainer Kracht
R.Kracht@t-online.de
Rob: I think it is a close match to the Kracht group comets

nice to see another one

Dave: yes, I think this is the Kracht group comet found by Toni
dave.nokia3330@orange.net
Rainer

Sep 30 2002 18:55:48 David Evans
dave.nokia3330@orange.net
Possible faint Kreutz in real-time C3 images of 2002/09/30

1024x1024 0,0 Top Left

20:42 685, 624
21:18 675, 615
21:42 669, 609

Awaiting further images... Please disregard if no follow-up.
Movement looks good but I cannot check any more images for at
least 6 hours.

- Dave
Sep 30 2002 19:21:05 Derek Hammer
derek@sungrazer.nascom.nasa.gov
Just updating the SOHO comet #'s for the latest confirmations.

SOHO525 was reported by M. Boschat and 526 by T. Scarmato.

SOHO# Reported By Date Camera
--------------------------------------------
525 M. Boschat 02/09/26 C2,C3
526 T. Scarmato 02/09/29-30 C2,C3


By the way, do we really need 12 posts regarding the recent comet
and eight more for Rainer's Mercury claim? There should be at most
2 posts from the original reporter (the 2nd is only necessary if the
first did not contain four positions). And only one confirmation
post is necessary. It should be sent by someone else, not from
yourself---what information is sent by confirming your own comet?
And let's check the page before we send the message--there are a
bunch of posts claiming or confirming the same comet. I know we
all get excited when an interesting new comet is visible, but
please take the discussion to the yahoo group: sohohunter.

Derek
Sep 30 2002 19:25:37 Derek Hammer
derek@sungrazer.nascom.nasa.gov
Note: My last post covers all comet claims since my post on 9/25,

except Dave's Sep 30 2002 18:55:48 claim.