SOHO-LASCO Comet Reports for 200207

Jul 01 2002 16:58:18 michael boschat
aa063@chebucto.ns.ca
Possible comet in C2 images - 20020701_1931 UT

Coordinates next post.Have to logon to other
computer at home. Objct faint
Michael Boschat
Jul 01 2002 17:04:05 mike boschat
aa063@chebucto.ns.ca
UPDATE on comet at 20020701_1931 UT in C2:


Diffuse.


****** NOTE ******
x-coordinates are probably correct,
but y-coordinates may be off by
several pixels.


0,477 in lower left corner

LASCO C2 IMAGES

Date & UT Size X and Y
of Images used Coordinates
--------------------------------------------
20020701_1931.gif 512 x 512 490, 405
20020701_1954.gif 512 x 512 485, 398
20020701_2006.gif 512 x 512 483, 398
20020701_2030.gif 512 x 512 480, 387

----------------
Michael Boschat
Jul 02 2002 15:56:32 Douglas Biesecker
doug@sungrazer.nascom.nasa.gov

The entry list for the SOHO-500 contest has been updated.
http://sungrazer.nascom.nasa.gov/soho500/

Good luck to all of the entrants.

Doug
Jul 02 2002 20:06:28 Derek Hammer
derek@sungrazer.nascom.nasa.gov
Hello,

We have checked all the recent claims and confirmed 4, with
3 still pending. These confirmations push the official tally
to 475 SOHO comets. The confirmed reports are...

Name Comet Date
--------------------------------------
R. Kracht 02/06/23 (1st post)
X. Leprette 02/06/27
T. Scarmato 02/06/28
R. Matson 02/06/28 (1st post)

The pending claims are the secondary, trailing fragments reported
by Rainer(02/06/23) and Rob(02/06/28), in addition to todays
claim from Mike.

If you would like to know why your claim was not confirmed, please
send me an email.

Derek
Jul 02 2002 23:09:45 Derek Hammer
derek@sungrazer.nascom.nasa.gov
Correction:


There is an error regarding the 3rd comet from my previous
table. Tony Hoffman reported this 02/06/28 comet, not Toni Scramato. Thank you Tony.

Derek



Jul 03 2002 19:23:26 hjkfhgjfk hfdjksh
jhkgfjk
Nothing ha ha
Jul 04 2002 01:57:01 David Evans
dave.nokia3330@orange.net
Possible Kreutz comet in recent c2 images. 


1024x1024 0,0 Top Left

2002/06/21


07:31 920, 900
07:54 916, 883
08:06 913, 877
08:30 908, 862
08:54 903, 847

Regards

Dave Evans
Jul 04 2002 13:20:51 David Evans
dave.nokia3330@orange.net
Just returned home from work... A further position and update to my previous report...


Possible Kreutz comet in recent c2 images.

1024x1024 0,0 Top Left

2002/06/21

The figures in brackets provide an indication of the total area of the object in pixels and from 06:30 - 08:54 it can be seen to gradually fade...

06.30 932, 939 (8)
07:31 920, 900 (9)
07:54 916, 883 (6)
08:06 913, 877 (4)
08:30 908, 862 (4)
08:54 903, 847 (3)

- Dave Evans
Jul 04 2002 14:20:16 Rainer Kracht
R.Kracht@t-online.de
Meyer group comet in archival C2 images of 2001 Feb 11.


C2, 1024x1024, 0,0 upper left

22086354.fts 13:54 12, 141
22086355.fts 14:06 26, 129
22086356.fts 14:30 54, 106
22086357.fts 14:54 84, 83
22086358.fts 15:06 98, 73
22086359.fts 15:30 127, 52

small comet, elongated

Rainer

Jul 05 2002 09:34:03 Scarmato Toni
toniscarmato@libero.it
Posible not Kreutz comet in C2

starting at 1024x1024 0,0 top-left

20020705 1154 647,65

Other positions at next post


Toni Scarmato
Jul 05 2002 09:43:11 Scarmato Toni
toniscarmato@libero.it
Update last report


C2 1024x1024 0,0 top-left

20020705 1154 647,65
20020705 1206 650,57
20020705 1254 658,35


In the first image the object
seem to have a little tail


Regards,

Toni Scarmato

Jul 05 2002 10:38:40 Rainer Kracht
R.Kracht@t-online.de
non-group comet in archival C2 images of 2001 Feb 18.


C2, 1024x1024, 0,0 upper left

22086989.fts 09:45 1013, 304
22086991.fts 10:00 997, 307
22086993.fts 10:15 980, 313
22086995.fts 10:30 964, 316
22086997.fts 10:45 948, 321
22086999.fts 11:00 931, 325
22087001.fts 11:15 914, 329
22087003.fts 11:30 897, 333
22087005.fts 11:45 880, 339
22087007.fts 12:00 863, 343
22087009.fts 12:15 846, 348
22087011.fts 12:30 829, 352

small comet, visible in many additional images

Rainer

Jul 05 2002 21:00:45 David Evans
dave.nokia3330@orange.net
Possible Kreutz comet in real time c2 images. 


1024x1024 0,0 Bottom Left

2002/07/05 - 2002/07/06

23:30 995, 112
00:06 983, 139
00:30 976, 157

Awaiting further images...

- Dave Evans
Jul 06 2002 04:00:30 David Evans
dave.nokia3330@orange.net
For some reason the 23:54 frame is missing

from the Java movie. I have now downloaded
the missing single image and cannot find
anything conclusive to give a 4 position;
so please disregard the previous report.
Jul 06 2002 19:04:40 Derek Hammer
derek@sungrazer.nascom.nasa.gov
We are up to 478 confirmed SOHO comets.


Previous pending claims:
-We have confirmed the 2nd of Rob's claims from June 28-29, 2002.

-Rainer's trailing fragment (02/06/23) and Mike's claim (02/07/01)
have been designated X-comets.


SOHO# Name Date Camera
-------------------------------------
462 D. Evans 02/06/13 C2
463 M. Oates 02/06/15 C2
464 R. Kracht 97/07/25 C2
465 R. Kracht 02/06/17-18 C2,C3
466 R. Kracht 97/09/29 C2
467 X. Leprette 01/05/13 C2
468 R. Kracht 97/10/19-20 C2
469 X. Leprette 01/05/18-19 C2
470 R. Kracht 02/06/20 C2
471 R. Kracht 97/10/23 C2
472 R. Kracht 02/06/23 C2
473 X. Leprette 02/06/27 C2
474 T. Hoffman 02/06/27-28 C2
475 R. Matson 02/06/28-29 C2, C3?
476 R. Matson 02/06/28-29 C2
--- D. Evans 02/06/21 C2 **PENDING**
--- R. Kracht 01/02/11 C2
--- R. Kracht 01/02/18 C2


Derek
Jul 08 2002 10:18:59 Xavier Leprette
xavier.leprette@wanadoo.fr
Possible sungrazer comet in a real-time C3 images now.


The object is very faint, small, and visible now in 3 consecutive images
on 2002/07/09 from 10:20 to 12:18 UT.
The object is moving towards the sun.

Approximate positions measured from the top-left corner
of a 1024x1024 frames :
col, row
10:20 UT 682,594

Xavier Leprette
Jul 08 2002 10:23:07 Xavier Leprette
xavier.leprette@wanadoo.fr
Possible sungrazer comet in a real-time C3 images now.

UPDATE:

The object is faint, small, and visible now in 3 consecutive images
on 2002/07/09 from 10:20 to 12:18 UT.
The object is moving towards the sun.

Approximate positions measured from the top-left corner
of a 1024x1024 frames :
col, row
10:20 UT 689,601 (error on my previous report)
11:18 UT 682,594
12:18 UT 677,587

Xavier Leprette
Jul 08 2002 10:29:19 Xavier Leprette
xavier.leprette@wanadoo.fr
About my two previous reports :

Obviously the date is 2002/07/08
Object is not visible at 9:18
I'm waiting others images to confirm this one.

Xavier leprette
Jul 08 2002 12:00:13 Sebastian Hoenig
Sebastian@sungrazer.org
Confirmation of Xavier's C3 comet.


Well done. The coemt can be faintly seen in 9:18 and very good in
15:18 image.

Regards, Sebastian
Jul 08 2002 14:25:22 Martin Chuter
martin@chutercns.freeserve.co.uk
LASCO C3 512x512 images


x y date time

2 270 20020707 2118 3951198 2.087E7
3 271 20020707 2218 3951258 2.079E7
4 271 20020707 2318 3951318 2.070E7
4 271 20020708 0018 3951378 2.070E7
6 271 20020708 0218 3951498 2.054E7
7 271 20020708 0318 3951558 2.046E7
7 271 20020708 0418 3951618 2.046E7

0,0 bottom left

I think this could be Xaviers new comet, but its worth reporting anyway just incase.
Jul 08 2002 16:09:14 Rob Matson
matsonr@saic.com
Hi Martin,


Your positions are not those of Xavier's C3 comet; however,
you should know that Jupiter is just about to enter C3 from
the middle left, which seems to correspond with the same
general area of your coordinates. Indeed, the scattered
light produced by Jupiter's bright image is already leaking
onto C3 as of the 09:18 image this morning, as seen around
row 531 in the 1024x1024 images (measured from top left).

--Rob
Jul 08 2002 19:56:01 Martin Chuter
martin@chutercns.freeserve.co.uk
Just to make sure, you have checked my coordinates?


The reason I ask is because you say "you should know that Jupiter is just about to enter C3 from the middle left, which seems to correspond with the same GENERAL AREA of your coordinates. Indeed, the scattered light produced by Jupiter's bright image is already leaking onto C3 as of the 09:18 image this morning.

I also say this because the object I picked out was not this scattered light you mentioned. I did clearly see this light from Jupiter that you were talking about, but my object is clearly not part of it.

The object appears to be moving slower than the background stars and looks convincingly like a comet to me hence why I thought it might be Xaviers...

Regards

Martin Chuter
Jul 08 2002 21:24:32 Rob Matson
matsonr@saic.com
Hi Martin,


Okay, now I see the object you're tracking. It's moving in the
plane of the ecliptic, and is too dim to be a planet (other than
perhaps Neptune, which is not in this part of the sky). This
can mean only one thing: it's an asteroid. I checked my
SkyMap software, and sure enough ... you've found Vesta! --Rob
Jul 09 2002 17:19:15 Xavier Leprette
xavier.leprette@wanadoo.fr
Possible archive comet sungrazer in C2 images from 08 june 2001


The suspect object is faint, without tail.
It is visible in 9 consecutive images.

Positions with 0,0 at bottom left in 1024x1024 images :

Images X Y time date
22095347.fts 793 20 03:30:05.557 08 june 2001
22095348.fts 793 35 03:54:05.756 08 june 2001
22095349.fts 793 40 04:06:05.549 08 june 2001
22095350.fts 793 58 04:30:05.434 08 june 2001
22095351.fts 793 72 04:54:05.520 08 june 2001
22095352.fts 793 80 05:06:05.512 08 june 2001
22095353.fts 793 95 05:30:05.398 08 june 2001
22095354.fts 793 112 05:54:05.884 08 june 2001
22095355.fts 793 121 06:06:05.576 08 june 2001

Xavier Leprette
Jul 09 2002 21:51:58 michael boschat
aa063@chebucto.ns.ca
Object in C3 images - 20020709_2018 UT


It is moving right to left below occultation
disk and starts just above a bright star and
"noise" near the 4 pm position.


****** NOTE ******
x-coordinates are probably correct,
but y-coordinates may be off by
several pixels.


0,477 in lower left corner

LASCO C3 IMAGES

Date & UT Size X and Y
of Images used Coordinates
--------------------------------------------
20020709_2018.gif 512 x 512 337, 261
20020709_2118.gif 512 x 512 333, 264
20020709_2218.gif 512 x 512 329, 267
20020709_2318.gif 512 x 512 323, 270

----------------
Michael Boschat

Jul 10 2002 20:13:37 David Evans
dave.nokia3330@orange.net
Possible comet in real time C2


1024x1024 0,0 Top Left

2002/07/10

21:30 1010, 288
22:06 1007, 302
22:30 1005, 315
23:06 1003, 327

- Dave
Jul 11 2002 01:20:29 David Evans
dave.nokia3330@orange.net
Sorry for any confusion, (a late night)


The origin of the coordinates in my previous posting
should have read 0,0 Top Left.

- Dave

Jul 11 2002 01:23:51 David Evans
dave.nokia3330@orange.net
Sorry for any confusion, again! (a late night and NO sleep)


What am I doing... The origin of the coordinates in my previous posting should have read 0,0 BOTTOM LEFT !!!!

This is going to be a bad day I think :o)
I got a 'comet-fuzzy' brain today.... Im going back to bed !

- Dave

Jul 11 2002 17:16:31 Rainer Kracht
R.Kracht@t-online.de
Meyer group comet in archival C2 images of 2001 May 16.


C2, 1024x1024, 0,0 upper left

...
22093624.fts 16:50 243, 298
22093625.fts 17:06 240, 282
22093626.fts 17:26 238, 261
22093627.fts 17:50 235, 236
...
22093634.fts 20:26 229, 89
22093635.fts 20:50 231, 69
22093640.fts 21:26 233, 42
22093641.fts 21:52 237, 22

mostly faint object,
visible in many images

Rainer

Jul 11 2002 18:09:28 Derek Hammer
derek@sungrazer.nascom.nasa.gov
Hello,


The current comet tally is...481 SOHO comets. We have confirmed
both of Xavier's claims since my last post and Rainer's archive
claim from today.

Regarding Dave's pending claim (02/06/21): We do not confirm it.


SOHO# Name Date Camera
-------------------------------------
477 R. Kracht 01/02/11 C2
478 R. Kracht 01/02/18 C2
479 X. Leprette 02/07/08 C3
480 X. Leprette 01/06/08 C2
481 R. Kracht 01/05/16 C2


Derek

Jul 12 2002 10:35:38 Penelope McFadin
fionghal@chaosbutterfly.com
Was watching the screen saver believe it or not and this image came up on 20020712_0518_c3.gif


You will notice that bright dash on the upper left corner of the image. I don't have good statistics as to what pixel that is, I only have the cheezy windows image viewer on my work computer here.

Can you tell me what that is? It's right above Jupiter in the upper left quarter of the image.

Thanks,
Penelope.
Jul 12 2002 10:59:40 Martin Chuter
martin@chutercns.freeserve.co.uk
Penelope...


The thing you are seeing is noise... background noise, nothing else. It looks like a stray ray crossing a bright star, hence why it looks like a comet with a tail!

But rest assured, it doesnt seem like a comet to me!
Jul 12 2002 11:21:54 Martin Chuter
martin@chutercns.freeserve.co.uk
Small, very faint blob visible...


As there are only two images available at present I am unable to track it further until more images are released. Could well be a faint star... as i say when further images are available I will confirm or disregard my report.

C2 Image Size = 512x512

Point X Y YYYYMMDD HHMM Julmins Height(km)
0 95 274 20020711 1606 3956646 2767370
1 97 274 20020711 1630 3956670 2733161

Jul 12 2002 12:01:53 Martin Chuter
martin@chutercns.freeserve.co.uk
Are my eyes deceiving me?


But Jupiter seems to have been joined by another bright star?

How did it get there?

The 05:18am image shows Jupiter all alone, but the 14:18pm C3 image shows Jupiter with an equally bright star with it???

Anyone care to comment on this?
Jul 12 2002 13:10:09 Tony Hoffman
tonyhoffman@earthlink.net
Martin--

Sometimes there are gaps in the data. (You may notice that the black-and-white images are sometimes riddled with blank patches.)
In the color images, instead of leaving them blank, they are "patched" with the same part of the frame from a previous image. It would seem that there is such a gap in the 14:18 image to the left of Jupiter, and it is filled with part of an image from earlier in the day when Jupiter was actually located in the gap.
--Tony Hoffman
Jul 12 2002 15:07:20 Michael Oates
mike@ph.u-net.com
Possible Meyer group comet in archival C2 images from 1 June 2001


This is quite a bright one.
I do hope this has not already been reported!

(0,0 in bottom left corner in 1024x1024 images)

Image Col Row
20010601_0908_c2.gif 337 851
20010601_0930_c2.gif 329 871
20010601_0954_c2.gif 320 892
20010601_1006_c2.gif
20010601_1030_c2.gif
20010601_1106_c2.gif
20010601_1130_c2.gif
20010601_1154_c2.gif
20010601_1206_c2.gif 277 994
20010601_1230_c2.gif 270 1010

Michael Oates

Jul 12 2002 16:20:55 Rainer Kracht
R.Kracht@t-online.de
Michael,

I was just downloading the images for June 01
when I read your message. I can confirm that this
is a Meyer group comet which has not already
been reported.

Rainer
Jul 12 2002 17:03:04 Derek Hammer
derek@sungrazer.nascom.nasa.gov
I can confirm Mike's archive claim.  That is SOHO discovery

482. I haven't checked in C3 yet. Rough positions follow.

Martin: Regarding the double Jupiter image, Tony's explanation is
correct. The 14:18 image has a small slice of missing data, which
just happened to correspond to Jupiter's position in the previous
image (5:18).

Penelope: your object is just a cosmic ray.


#COMMENT: SOHO482
# HEIGHT DATE TIME ANGLE TEL FC COL ROW
4.32 2001/06/01 08:30:05 27.0 C2 10 352.0 816.0
4.79 2001/06/01 09:08:06 26.6 C2 10 337.0 851.0
5.06 2001/06/01 09:30:05 26.5 C2 10 328.0 871.0
5.34 2001/06/01 09:54:26 26.3 C2 10 319.0 892.0
5.47 2001/06/01 10:06:06 26.2 C2 10 315.0 902.0
5.73 2001/06/01 10:30:22 26.1 C2 10 306.0 922.0
6.10 2001/06/01 11:06:05 25.9 C2 10 294.0 950.0
6.34 2001/06/01 11:30:05 25.7 C2 10 287.0 968.0
6.57 2001/06/01 11:54:05 25.7 C2 10 279.0 986.0
6.68 2001/06/01 12:06:07 25.6 C2 10 276.0 994.0
6.90 2001/06/01 12:30:05 25.7 C2 10 267.0 1010.0


Derek
Jul 14 2002 21:32:06 michael boschat
aa063@chebucto.ns.ca
Possible comet in C3 images - 20020714_2118 UT


Suspect by "dark noise" at 4 pm
position 1/2 way from occultator.


****** NOTE ******
x-coordinates are probably correct,
but y-coordinates may be off by
several pixels.


0,477 in lower left corner

LASCO C3 IMAGES

Date & UT Size X and Y
of Images used Coordinates
--------------------------------------------
20020714_2118.gif 512 x 512 352, 266
20020714_2218.gif 512 x 512 350, 264
20020714_2318.gif 512 x 512 348, 263
20020715_0018.gif 512 x 512 348, 261

----------------
Michael Boschat
Jul 15 2002 11:46:19 Martin Chuter
martin@chutercns.freeserve.co.uk
C3 Image Size = 512x512


Point X Y YYYYMMDD HHMM Julmins Height(km)
0 1 208 20020715 1020 3962060 2.147E7
1 2 208 20020715 1118 3962118 2.139E7
2 4 209 20020715 1218 3962178 2.121E7
3 7 209 20020715 1418 3962298 2.097E7

The object appears in the 10:20am image and is moving from left to right. It appears at the far left, center edge of the image.

Just a hunch that this could well be moving slightly faster than normal, hence being a comet, need some more images to come through though.

Martin Chuter
Jul 15 2002 21:13:04 michael boschat
aa063@chebucto.ns.ca
Possible comet in C2 images - 20020715_2306 UT


Faint, small, nebulous

****** NOTE ******
x-coordinates are probably correct,
but y-coordinates may be off by
several pixels.

0,477 in lower left corner

LASCO C2 IMAGES

Date & UT Size X and Y
of Images used Coordinates
--------------------------------------------
20020715_2306.gif 512 x 512 474, 450
20020715_2330.gif 512 x 512 470, 444
20020716_0006.gif 512 x 512 469, 439

----------------
Michael Boschat
Jul 16 2002 14:10:59 Sebastian Hoenig
Sebastian@sungrazer.org
Possible sungrazer in realtime LASCO C3, 16:18, 17:18


~760,688. positions next post.

Sebastian Hoenig
Jul 16 2002 14:14:47 Sebastian Hoenig
Sebastian@sungrazer.org
New sungrazer in realtime LASCO C3

(Update: Positions)

Description:
Definitely cometary, medium bright

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

Time (x,y)
14:18 767,698
16:18 761,689
17:18 757,684

Sebastian Hoenig
Jul 16 2002 14:15:39 Rob Matson
matsonr@saic.com
Hi All,


I was going to hold off on reporting on the possible object
that Sebastian just reported until a 4th image came out,
particularly since the velocity does not appear to be
consistent. Here are the (1024x1024) coordinates I've been tracking:

14:18 767, 698
16:18 761, 689
17:18 757, 684

These points are not colinear, thus the reason for waiting
for a 4th image.

Cheers,
Rob
Jul 16 2002 14:29:43 Rob Matson
matsonr@saic.com
Hi All,


Well, I've just looked at the 512x512 B&W frame for 18:18, and
it appears that Sebastian's comet is real -- an object persists
at the expected location. But there is also a second, dimmer
object moving on a parallel trajectory just ahead of it and to
its left:

16:18 750, 688
17:18 747, 682

More positions to come. --Rob
Jul 16 2002 14:30:40 Sebastian Hoenig
Sebastian@sungrazer.org
Another possible Kreutz sungrazer in realtime LASCO C3


Description:
Object on parallel track to the first one I reported,
particularly fainter

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

Time Obj.1 New Obj.2
16:18 767,698 753,690
16:18 761,689 747,682
17:18 757,684 743,677

Sebastian Hoenig
Jul 16 2002 14:33:48 Sebastian Hoenig
Sebastian@sungrazer.org
Another possible Kreutz sungrazer in realtime LASCO C3

(Update:CORRECTION on time)

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

Time Obj.1 New Obj.2
16:18 767,698 753,690
17:18 761,689 747,682
18:18 757,684 743,677

Sebastian Hoenig
Jul 16 2002 14:41:27 Rob Matson
matsonr@saic.com
I believe Sebastian is reporting the same #2 object that I

did. Adding to my earlier two position points:

14:18 757, 697
16:18 750, 688
17:18 747, 682
18:18 742, 676 (expanded from 512x512)

This comet is basically about 10 pixels left of Sebastian's
first reported comet, and 1 to 2 pixels higher. --Rob
Jul 16 2002 15:32:14 Rainer Kracht
R.Kracht@t-online.de
Kracht group comet in archival C2 images of 2001 Aug 24/25.


C2, 1024x1024, 0,0 upper left

22100434.fts 21:26 984, 348
22100435.fts 21:50 961, 345
22100436.fts 22:06 946, 344
22100437.fts 22:27 925, 341
22100438.fts 23:06 886, 338
22100439.fts 23:26 865, 336
22100440.fts 23:50 841, 334
22100441.fts 00:06 824, 333
22100442.fts 00:27 802, 331
22100443.fts 00:50 779, 329

a bit brighter than C/2001 Q7
which appeared three days before this one

Rainer

Jul 16 2002 20:37:43 Rob Matson
matsonr@saic.com
Hi All,


Yet another comet is leading the pair previously reported
today by myself and Sebastian. One position with more
to follow in next message:

1024 x 1024 C3:

23:18 690 616

--Rob
Jul 16 2002 20:42:55 Rob Matson
matsonr@saic.com
UPDATE 2002 July 16/17 - Comet in LASCO C3 real-time images

beginning at 22:18 leading the (brighter) pair reported
earlier today. 1024x1024 coordinates measured from
upper left corner:

YYYY-MM-DD HH:MM Col Row
---------------- --- ---
2002-07-16 22:18 695 622
23:18 690 616
2002-07-17 00:18 685 610

--Rob
Jul 17 2002 07:58:32 Douglas Biesecker
doug@sungrazer.nascom.nasa.gov

Hi all,
Just checking in. I can confirm the pair of C3 comets
reported by S. Hoenig and R. Matson. These should look good
when we finally get more data. All other reports are still
pending.

Doug
Jul 17 2002 10:37:11 Rainer Kracht
R.Kracht@t-online.de
one of the C3 comets has just entered the C2 field (14:30)

1017,766 (0,0 upper left)

Rainer
Jul 17 2002 13:18:06 Ledingham Mark
mark-le@online.no
Congratulations, Rainer. Your last one is a beauty! 

Can someone please help me to identify what this
might be in today's LASCO C2 images?

Date Time Tel Position
YYYY/MM/DD (UT) (X, Y)*

2002/07/17 14:30 C2 (528, 966)
2002/07/17 15:06 C2 (528, 958)
2002/07/17 15:30 C2 (527, 954)

* Coordinates mesured in 1024x1024 images, (0,0) is top-left corner.

- Mark Ledingham
Jul 17 2002 13:36:49 Rainer Kracht
R.Kracht@t-online.de
the second C3 comet has entered the C2 field 17:30

1015,731 (0,0 upper left)

Rainer
Jul 17 2002 13:54:06 Rainer Kracht
R.Kracht@t-online.de
Mark,

the C3 comets were found by Sebastian and Rob
and clearly three positions are not enough for a
faint possible non-group object.

Rainer
Jul 17 2002 14:37:14 Rob Matson
matsonr@saic.com
Hi All,


I searched in C2 for the dim fragment leading the bright pair
which was visible in 8 consecutive frames of C3, but it does not
appear to survive to its expected C2 entry around 9:15 - 9:30.
Here are the approximate positions for it in C3 late yesterday
and earlier today:

YYYY-MM-DD HH:MM Col Row
---------------- --- ---
2002-07-16 22:18 695 622
23:18 690 616
2002-07-17 00:18 685 610
02:18 673 596
03:18 667 588
04:18 660 581
05:18 653 573
06:18 646 565

--Rob

Jul 17 2002 16:12:28 Rainer Kracht
R.Kracht@t-online.de
Kracht group comet in archival C2 images of 2001 Sep 06.


C2, 1024x1024, 0,0 upper left

22100667.fts 19:32 1003, 346
22100668.fts 19:54 984, 343
22100669.fts 20:06 974, 342
22100670.fts 20:31 952, 340
22100676.fts 21:30 900, 335
22100677.fts 21:54 879, 333
22100678.fts 22:06 868, 332
22100679.fts 22:31 845, 330
22100680.fts 23:06 813, 328
22100681.fts 23:30 793, 328

similar to C/2001 Q7 (and Q8)
and on the same apparent track

Rainer

Jul 17 2002 17:32:46 Rainer Kracht
R.Kracht@t-online.de
possible Kracht group comet in archival C2 images of 2001 Sep 07.


C2, 1024x1024, 0,0 upper left

22100717.fts 12:06 1016, 348
22100718.fts 12:31 996, 345
22100719.fts 12:54 977, 343
22100720.fts 13:32 944, 339
22100721.fts 13:55 925, 337?

similar to C/2001 Q7 (and Q8/R7)
and on the same apparent track
but fading rapidly after 13:32

Rainer

Jul 17 2002 18:21:20 Michael Oates
mike@ph.u-net.com
Possible Meyer comet in archive images from 12 Sept 2001


(0,0 in bottom left corner in 1024x1024 images)
Image Col Row
20010912_1706_c2.gif 1006 892
20010912_1730_c2.gif 980 914
20010912_1754_c2.gif 953 936
20010912_1806_c2.gif 939 946
20010912_1831_c2.gif 909 969
20010912_1855_c2.gif 877 991

Michael Oates
Jul 18 2002 05:28:48 Scarmato Toni
toniscarmato@libero.it
Possible Meyer Group comet in C2

real-time

Position 1024x1024 0,0 top-left

2002/07/18

0506 930,392 faint
0530 926,380 faint
0606 920,365
0630 916,353
0731 906,326
0830 896,299
0906 890,283


Small object moving on an apparent Meyer orbit.


Regards,

Toni Scarmato
Jul 18 2002 20:14:17 Derek Hammer
derek@sungrazer.nascom.nasa.gov
Wow, quite a few comets were discovered in the last few days. 

We've looked at all claims since July 14th and here are the
confirmations...


SOHO# Name Date Camera
-------------------------------------
483 S. Hoenig 02/07/16-17 C2,C3
484 R. Matson 02/07/16-7 C2,C3
485 R. Kracht 01/08/24-25 C2
486 R. Matson 02/07/16-17 C3
487 R. Kracht 01/09/06 C2
488 R. Kracht 01/09/07 C2
489 M. Oates 01/09/12 C2


Derek
Jul 19 2002 09:20:17 Scarmato Toni
toniscarmato@libero.it
Possible comet in archive C2 images

2001/11/02

Positions 1024x1024 0,0 top-left corner

0330 645,1008
0354 641,993
0406 639,981
0430 638,965
0454 638,950 ?

The comet seem to have a tail in first image, but
fading fast.

Regards,

Toni Scarmato
Jul 19 2002 15:21:27 arturo eliserio
arturo.eliserio@jci.com
Is this a planet?


C3 Image Size = 512x512

Point X Y YYYYMMDD HHMM Julmins Height(km)
0 354 316 20020718 1020 3966380 8717189
1 342 314 20020718 1718 3966798 7785466
2 329 313 20020719 0218 3967338 6846368
3 317 315 20020719 0918 3967758 6165320
4 314 315 20020719 1118 3967878 5981304
5 307 314 20020719 1618 3968178 5512038
6 304 313 20020719 1818 3968298 5283618
Jul 21 2002 08:25:16 Rainer Kracht
R.Kracht@t-online.de
Meyer group comet in archival C2 images of 2001 Nov 02.


C2, 1024x1024, 0,0 upper left

22105539.fts 08:54 978, 210
22105540.fts 09:06 976, 189
22105541.fts 09:30 970, 174
22105542.fts 09:54 964, 150
22105543.fts 10:06 961, 139

small comet

Rainer
Jul 21 2002 11:28:48 Michael Oates
mike@ph.u-net.com
Possible archive Meyer group comet in C2 images 15 Dec 2001

faint

(0,0 in bottom left corner in 1024x1024 images)
Image Col Row
20011215_1056_c2.gif 583 892
20011215_1106_c2.gif 598 901
20011215_1130_c2.gif 547 905
20011215_1154_c2.gif 618 943
20011215_1206_c2.gif 626 953
20011215_1230_c2.gif 640 973
20011215_1254_c2.gif 654 992
20011215_1331_c2.gif 676 1020

Michael Oates
Jul 21 2002 13:48:15 Michael Oates
mike@ph.u-net.com
For your information: Vesta entered the C2 images on the left

hand edge at 14:06 on July 19. A position from an image today
follows so that you know where it is.

Also as a point of interest you can also see one of Jupiters
moons - Callisto to the right of Jupiter.

(0,0 in bottom left corner in 1024x1024 images)
Image Col Row Object
20020721_1506_c2.gif 202 911 Vesta
20020721_1506_c2.gif 868 643 Callisto

Michael Oates
Jul 21 2002 21:50:26 Derek Hammer
derek@sungrazer.nascom.nasa.gov
Hello,


I can confirm the recent archive claims of Rainer (01/11/02) and
Mike (01/12/15). Rough positions to follow. These discoveries push
our total to 491 SOHO comets.

Also, the measurements are now current. You should see
comets 480-491 in the next MPECs.

Arturo: your positions correspond to Mercury. The "C3 Transits"
link will tell you which planets are in the field of view.


#COMMENT: SOHO490
# HEIGHT DATE TIME ANGLE TEL FC COL ROW
6.46 2001/11/02 07:54:05 297.1 C2 10 989.0 750.0
6.51 2001/11/02 08:06:05 298.5 C2 10 987.0 763.0
6.63 2001/11/02 08:30:05 300.9 C2 10 984.0 788.0
6.72 2001/11/02 08:54:05 303.4 C2 10 978.0 813.0
6.79 2001/11/02 09:06:05 304.6 C2 10 976.0 826.0
6.90 2001/11/02 09:30:05 307.0 C2 10 970.0 850.0
7.01 2001/11/02 09:54:05 309.1 C2 10 964.0 873.0
7.07 2001/11/02 10:06:05 310.2 C2 10 961.0 885.0

#COMMENT: SOHO491
# HEIGHT DATE TIME ANGLE TEL FC COL ROW
4.47 2001/12/15 10:34:05 351.4 C2 10 568.0 871.0
4.74 2001/12/15 10:56:20 349.8 C2 10 582.0 892.0
4.86 2001/12/15 11:06:43 349.1 C2 10 589.0 901.0
5.14 2001/12/15 11:30:05 347.8 C2 10 603.0 922.0
5.42 2001/12/15 11:54:05 346.5 C2 10 618.0 943.0
5.56 2001/12/15 12:06:06 345.9 C2 10 625.0 954.0
5.82 2001/12/15 12:30:05 344.9 C2 10 639.0 973.0
6.09 2001/12/15 12:54:05 343.8 C2 10 654.0 992.0
6.47 2001/12/15 13:31:47 342.5 C2 10 675.0 1020.0


Derek
Jul 22 2002 21:56:59 michael boschat
aa063@chebucto.ns.ca
Possible comet (?) in C2 images - 20020722_2233 UT


****** NOTE ******
x-coordinates are probably correct,
but y-coordinates may be off by
several pixels.


0,477 in lower left corner

LASCO C2 IMAGES

Date & UT Size X and Y
of Images used Coordinates
--------------------------------------------
20020722_2233.gif 512 x 512 501, 383
20020722_2306.gif 512 x 512 499, 381
20020722_2330.gif 512 x 512 495, 378
20020723_0006.gif 512 x 512 490, 371
20020723_0030.gif 512 x 512 487, 370
----------------
Michael Boschat

Jul 23 2002 03:53:59 Vikrant Narang
vikrant_narang@yahoo.com
possible kreutz comet real time C2 images

date: 2002/07/23

NOTE: appears to be moving VERY fast, but something about the motion and appearance seems consistant to me. hope i am not chasing random cosmic ray.

positions in 1024x1024 C2 images dated 2002/07/23
0.0 in top-left of the image

Col Row
02:06 957 922
02:30 919 890
03:06 856 842
03:30 752 764
Jul 23 2002 04:09:11 Maik Meyer
maik@comethunter.de
Vikrant,


you may notice that your first point is also in the 01:31 image.
The 02:06 UT image has missing blocks which are filled up with the
blocks of the preceding image. So your first point is not valid.

Second the velocity is too fast for a Kreutz comet and the apparent
track is somehow shifted to what is expected for this time of year.

Third the velocity is not constant. The velocities in pixel/hour
change as follows:
x 95 -> 105 -> 260
y 80 -> 80 -> 195

Just noise.

Hope this helps, Maik
Jul 23 2002 04:45:47 Vikrant Narang
vikrant_narang@yahoo.com
Thanks for prompt feedback Maik, it was pretty helpful. I have now checked the 01:31 image and verified. You are right, it's just noise. Will take care next time. :)


Satisfied by Maiks comments, I would like to WITHDRAW my claim in post 'Jul 23 2002 03:53:59'
Jul 24 2002 07:15:07 David Evans
dave.nokia3330@orange.net
Has this one has been overlooked? Visible in 11 images. I have not found reference to the object in the reports for June.


A possible Kreutz comet in recent C2 images of 2002/06/16.

At its brightest (11:25) the total area of the object is
10 pixels... The object then gradually fades.

0,0 Top Left

11:10 976, 952
11:20 973, 945
11:25 971, 942 Maximum Magnitude
11:35 968, 935
11:40 967, 931
11:50 965, 922
11:55 963, 918
12:05 961, 910
12:10 959, 906
12:20 957, 899
12:25 955, 894

- Dave

Jul 24 2002 09:10:14 wang zhengyuan
wangzhengyuan@petrochina.com.cn
c3 images 2002/07/19

Positions 1024x1024 0,0 top-left corner

20020719_0018 101,453
20020719_0218 106,453
20020719_0318 109,453
20020719_0418 111,453
20020719_0618 117,452
20020719_0818 122,452
20020719_0918 125,451
20020719_2318 161,448(?)
Jul 24 2002 14:20:49 Tony Hoffman
tonyhoffman@earthlink.net
Zhengyuan--


What you have reported is a sixth-magnitude star
in Cancer, approx. pos. 8hr22min +20deg40min.
It seems in motion relative to Mars (the brighter
object to its left), but not to the stars around it.

--Tony Hoffman
Jul 24 2002 14:24:05 David Evans
dave.nokia3330@orange.net
Further positions available for possible Kreutz comet in recent

C2 images of 2002/06/16. Re. my previous post of Jul 24 2002 07:15:07.

The object can be seen in 15 consecutive images.

0,0 Top Left

11:10 976, 952
11:20 973, 945
11:25 971, 942 Maximum Magnitude
11:35 968, 935
11:40 967, 931
11:50 965, 922
11:55 963, 918
12:05 961, 910
12:10 959, 906
12:20 957, 899
12:25 955, 894
12:35 952, 886
12:40 951, 880
12:50 948, 872
12:55 946, 868

- Dave
Jul 24 2002 15:21:49 Tony Hoffman
tonyhoffman@earthlink.net
Nice find, David.


--Tony H.
Jul 25 2002 17:55:52 John Sachs
imagephoto@blazenet.net
I have been watching this object for 2 days. It is about 5-8 degrees to the right of the solar disk at about the 2:00 position.

I had trouble seeing it on real time movie. but here is 1 location..1 647 595 20020725 1618 3976818 5828610. Possible comet? Thank You.
Jul 26 2002 13:29:00 Derek Hammer
derek@sungrazer.nascom.nasa.gov
Dave, are you really suprised nobody found your 02/06/16 object

before? This was a very faint object, just barely above the
background. Nonetheless, because it's visible in such a large #
of images, we can confirm it. Excellent find! Rough positions
below.

The counter now reads...492 SOHO comets.


#COMMENT: SOHO492
# HEIGHT DATE TIME ANGLE TEL FC COL ROW
7.73 2002/06/16 11:20:07 227.2 C2 10 973.0 79.0
7.69 2002/06/16 11:25:05 227.3 C2 10 971.0 82.0
7.61 2002/06/16 11:35:05 227.6 C2 10 968.0 89.0
7.56 2002/06/16 11:40:05 227.9 C2 10 967.0 94.0
7.48 2002/06/16 11:50:06 228.3 C2 10 965.0 102.0
7.44 2002/06/16 11:55:05 228.4 C2 10 963.0 105.0
7.34 2002/06/16 12:05:06 228.9 C2 10 960.0 114.0
7.30 2002/06/16 12:10:05 229.1 C2 10 959.0 118.0
7.22 2002/06/16 12:20:06 229.6 C2 10 957.0 126.0
7.16 2002/06/16 12:25:05 229.7 C2 10 954.0 130.0


Derek
Jul 26 2002 21:05:44 David Evans
dave.nokia3330@orange.net
Possible faint Kreutz in real time C2


2002/07/26

0,0 Top Left

22:06 1009, 689
22:30 1000, 681
23:06 992, 664
23:30 986, 651

Just monitoring at the moment and awaiting further images

- Dave

Jul 26 2002 21:34:29 David Evans
dave.nokia3330@orange.net
Update to previous post: 

Possible faint Kreutz in real time C2

2002/07/26

0,0 Top Left

Just one extra position to add before the object fades...

22:06 1009, 689
22:30 1000, 681
23:06 992, 664
23:30 986, 651
00:06 976, 637

- Dave
Jul 27 2002 05:45:04 David Evans
dave.nokia3330@orange.net
Please disregard my last two posts...

Whatever the object is, on review it does appear to be moving in
a non-linear manner.

- Dave
Jul 27 2002 09:19:20 wang zhengyuan
wangzhengyuan@petrochina.com.cn
Had anyone reported the following objects?

2002/07/17,c3,1024*1024, 0,0 Top Left

00:18 718, 642
02:18 708, 631
03:18 703, 625
04:18 698, 619
05:18 693, 612
06:18 687, 606
08:18 675, 592
09:18 669, 584
10:20 661, 577
11:18 654, 569
12:18 646, 561
14:18 629, 544 (fade)
and there was another object followed it.
Jul 27 2002 10:18:32 Maik Meyer
maik@comethunter.de
Please check this report page or the archival reports before

posting a claim. You would have seen that these comets have
been reported almost immediately on July 16 by S. Hönig and
R. Matson. In fact there were three comets and were already
designated as C/2002 O1, C/2002 O2 and C/2002 O3.

Maik

Jul 27 2002 19:45:22 Rob Matson
matsonr@saic.com
Archive Kreutz sungrazer found in 12/7/98 C2 imagery.

It's visible in 6 consecutive frames and is not on my
X-comet list. 1024x1024 positions measured from lower
left corner:

YYYY-MM-DD HH:MM FTS Filename Col Row
---------- ----- ------------ --- ---
1998-12-07 00:54 22038742.fts 238 14
01:32 22038743.fts 238 44
01:54 22038744.fts 238 62
02:30 22038745.fts 238 93
02:54 22038746.fts 238 113
03:30 22038747.fts 239 144

--Rob
Jul 28 2002 01:36:06 John Sachs
imagephoto@blazenet.net
LASCO C3images Asteroid Vesta? or ? Moving Fast C3 images

Point X Y YYYYMMDD HHMM Julmins Height(km)
0 622 827 20020726 2118 3978558
0 540 819 20020726 1518 3978198
0 585 826 20020727 1120 3979400
0 599 824 20020727 1418 3979578
0 590 823 20020727 2018 3979938
Positions: 1024x1024 images
Thanks John
Jul 28 2002 01:40:21 John Sachs
imagephoto@blazenet.net
LASCO C3images Asteroid Vesta? or ? Moving Fast C3 images

Point X Y YYYYMMDD HHMM Julmins Height(km)
0 622 827 20020726 2118 3978558
0 540 819 20020726 1518 3978198
0 585 826 20020727 1120 3979400
0 599 824 20020727 1418 3979578
0 590 823 20020727 2018 3979938
Positions: 1024x1024 images
Thanks John
Jul 28 2002 01:46:42 Maik Meyer
maik@comethunter.de
Rob,


your claim is C/1998 X12 (SOHO) found by myself and announced
in MPEC 2002-J39. It is not yet in Dougs list.

Maik
Jul 28 2002 06:41:16 David Evans
dave.nokia3330@orange.net
Here is another 'missed' C2 Kreutz to add to the list. It is

visible over 9 images. I cannot find a reference to it in either
the SOHO Comets 2000 List or the monthly reports for April. So
this is perhaps one that, at the time, got away...

2002/04/23 (recent C2 images)

This comet is relatively bright and was perhaps originally missed due to a proton storm (giving the appearance of a heavy snow storm within the images) at that time.

23:27 265, 950
23:51 280, 934
00:06 289, 924
00:26 Duplicate Image Block (SOHO Instrument Fault)
00:50 317, 893
01:27 340, 866
01:50 354, 850
02:06 365, 838
02:26 377, 822

The comet seems to have two concentrations. The second 1 - 2
pixels behind the first in both x & y.

- Dave
Jul 28 2002 06:52:40 David Evans
dave.nokia3330@orange.net
Re previous report. Ref to SOHO Comets 2000 list - this should

of course be the 2002 list (something quite obvious I know) :o)

I think I'll give the proton storm images a thorough check. I'm sure there must be 3 or 4 missed Kreutz's within them.

Just downloading the images now...

- Dave
Jul 28 2002 14:32:19 David Evans
dave.nokia3330@orange.net
Update to my previous report of Jul 28 2002 06:41:16


Kreutz in C2 images of 2002/04/23 - 2002/04/24

All measurements from 0,0 TOP LEFT

In the 4 images between 2002/04/24 00:50 - 02:06 there appears
to be a small companion object situated approximately x=0, y=+9

Coordinates for the companion object are -

00:50 317, 902
01:27 341, 876
01:50 354, 858
02:06 365, 848

Although point-like in appearance, I thought this was worthy of
mention as the companion is visible in the minimum requirement of
4 consecutive images.

- Dave



Jul 28 2002 16:14:51 David Evans
dave.nokia3330@orange.net
Update to post of Jul 28 2002 14:32:19 concerning the companion

object to the now confirmed SOHO493. Although not part of the
run of aforementioned consecutive frames 00:50 - 02:06, on the
preceeding side of the damaged GIF file containing the duplicate
image block (00:26), I would like to report that the companion
object can also be found at the following coordinates -

2002/04/23

0,0 TOP LEFT

23:51 281, 946
00:06 290, 934

The above may help to provide a little bit more evidence that the
companion object may be real... If this is true, then I wonder
if the distance of the tiny companion would be sufficient for it
to be given its own identity and recorded as a separate find?

Whatever the outcome of this very minor claim, it certainly
looks like SOHO500 may now be just a week or two away !!! :o)


- Dave

Jul 28 2002 16:23:17 John Sachs
imagephoto@blazenet.net
Here is another object following behind the object I reported on

Jul 28 2002 01:40:21. Same direction and path.
Lasco C3 1020x1024
Second object
Point X Y YYYYMMDD HHMM Julmins Height(km)
1 766 806 20020727 2218 3980058
8 788 794 20020726 2018 3978498
Are these Comets or asteroids?
Thank You John
Jul 28 2002 17:08:46 John Sachs
imagephoto@blazenet.net
Concerning my 2 reports posted on below.

Jul 28 2002 16:23:17 Jul 28 2002 01:40:21
Please diregard my reports. The objects I was looking at are artifacts of the Images. Sorry. I will be much more vigilant. I'm new at this. Pass the crow. Thanks John.
Jul 29 2002 11:25:19 Gorelli Roberto
md6648@mclink.it
Congratulations to Sebastian F. Honig for its

discovery of comet 2002 O4 (not Soho)!
Roberto Gorelli
Jul 30 2002 20:31:00 Derek Hammer
derek@sungrazer.nascom.nasa.gov
Dave, SOHO designations should not be declared until Doug or

myself can confirm the report. That being said, we do confirm the
first of your reports of a comet in April 23-24, 2002 images. We
cannot confirm your second report of a trailer. Finally, missing
data blocks are typically not the result of a "SOHO Instrument
Fault".

So, we are now up to 493 SOHO comets with number 500 just around
the corner. That was fast. Like most of you, I did not
anticipate Rainer's huge success finding non-Kreutz comets. Well
done. And yes, congratulations are in order for Sebastian's
non-SOHO discovery.


#COMMENT: SOHO493
# HEIGHT DATE TIME ANGLE TEL FC COL ROW
7.09 2002/04/23 21:51:13 148.4 C2 11 208.0 10.0
6.95 2002/04/23 22:06:05 148.6 C2 11 216.0 19.0
6.11 2002/04/23 23:27:12 150.3 C2 10 265.0 72.0
5.86 2002/04/23 23:51:10 150.8 C2 10 279.0 88.0
5.70 2002/04/24 00:06:05 151.1 C2 10 288.0 98.0
5.20 2002/04/24 00:50:05 152.4 C2 11 316.0 130.0
4.77 2002/04/24 01:27:17 153.6 C2 10 340.0 158.0
4.53 2002/04/24 01:50:05 154.5 C2 10 354.0 173.0
4.33 2002/04/24 02:06:06 155.2 C2 10 365.0 186.0
4.11 2002/04/24 02:26:05 156.0 C2 10 377.0 201.0


Derek



Jul 30 2002 20:58:29 David Evans
dave.nokia3330@orange.net
Sorry Derek if you felt I had jumped the gun with the

designations. Both confirmation and designation did however
appear prior to my post of Jul 28 2002 16:14:51 on Sebastian's
comet hunter website! On Jul 28, 2002 he wrote...

"Furthermore, David Evans found two sungrazers in
LASCO C2 images of Jun 16 and Apr 23,2002 (SOHO-492 and SOHO 493)."

I remember thinking at the time "That was quick." Point taken
though for future reference... No mention of any designation
until we get to see that lovely splash of red ink :o)

- Dave
Jul 31 2002 20:02:16 John Sachs
imagephoto@blazenet.net
 Object Moving slow. Faint 

2002/07/31
0,0 Top Left
C3 1024x1024 Images
20020730_1718 C3 742 370
20020731_0418 C3 756 368
20020731_0918 C3 763 367
20020731_1618 C3 773 366
20020731_1818 C3 775 365
Thank You
John
Jul 31 2002 23:37:24 Rob Matson
matsonr@saic.com
2002 July 31/August 1 - Possible comet in LASCO C3 real-time images

beginning at 22:18 (possibly earlier?). Very diffuse in the rather
washed-out looking C3 images that have been showing up lately.
1024x1024 coordinates measured from upper left corner:

YYYY-MM-DD HH:MM Col Row
---------------- --- ---
2002-07-31 22:18 752 535
23:18 754 528
2002-08-01 00:18 756 522
02:18 759 512

--Rob