SOHO-LASCO Comet Reports for 200206

Jun 01 2002 15:32:36 Ayse Baba
ayse_baba@mynet.com
Ben Türküm...
Jun 02 2002 08:34:54 Doug Biesecker
doug@sungrazer.nascom.nasa.gov

The SOHO-500 contest is now closed. Sorry, I haven't been able
to post a complete list of entries. Too much travelling. I'm
home for a 12 hour stopover before I'm off again. I promise,
the week of June 10, things will return to normal and I'll get
the contest entries posted.

Doug
Jun 03 2002 14:57:20 Rainer Kracht
R.Kracht@t-online.de
Kreutz sungrazer in archival C2 images of 2000 October 07.


C2, 1024x1024, 0,0 upper left

22078247.fts 01:27 953, 947
22078248.fts 01:50 929, 927
22078249.fts 02:26 893, 894
22078250.fts 02:50 867, 872

small comet
could be visible in 22078255.fts 03:34 512x512
but I couldn't open that image with AvisFITS

Regards, Rainer
Jun 04 2002 11:02:18 Rainer Kracht
R.Kracht@t-online.de
Kreutz sungrazer in archival C2 images of 2000 October 12.


C2, 1024x1024, 0,0 upper left

22078619.fts 09:50 692,1006
22078620.fts 10:06 680, 990
22078621.fts 10:26 663, 970
22078622.fts 10:51 643, 944
22078623.fts 11:06 630, 928

small comet behind SOHO-206
but to the side of the subgroup II comets

Rainer
Jun 04 2002 13:49:12 Scarmato Toni
toniscarmato@libero.it
Possible comet in C2 archive images.


Date 2001/12/25

Positions 512x512 (0,0) top-left corner

21:54 (8.430)
22:06 (14,428)
22:30 (26,423)

A little object moving toward the sun.
Unfortunately, the follow image is at 23:30 and
I am not been able to find again the object.


Regards,

Toni Scarmato

Jun 04 2002 17:54:55 Derek Hammer
derek@sungrazer.nascom.nasa.gov
Hello,

I have looked at the claims since my last post and only the
two archive comets reported by Rainer are real. Approximate
positions are below.

Kazimieras your "pending" claim of 02/05/13 is now officialy
confirmed as C/2002 J8. This gives us 454 confirmed comets with
1 pending (Leprette 02/05/12-13).

Hope these comments regarding the recent false claims help...

Xu:
You are reporting cosmic rays. Please see my comments on 5/30
for tips on learning the difference. Also, comets appear in
consecutive images. They will not disappear in one and then
reappear in the following image. Also, please indicate which
"left corner" you are referring to (bottom or top). I'm assuming
you were referring to the top corner based on cosmic rays found
at your given positions. Also, make sure your times are correct.
The first time you give is incorrect (01:18). Be skeptical of
objects not following the tracks referred to in my 5/30 post.

Fan:
These are cosmic rays. Again, please see my comments on 5/30
to learn the difference. Also, we require 4 positions for a
comet claim unless it is absolutely obvious it is a comet. If
you have any doubts wait for a 4th image. Also, the coordinates
you give suggest a large increase in speed, based on your x
coordinates. Comets do not change speeds significanlty on the
time scale of hours. Be skeptical of comets not following the
tracks I refer to in my 5/30 post.

Martin:
This is star HD 31382. You should not post if you think it's a
star. i.e. We expect you to determine if a star is expected here.

Toni:
These are random cosmic rays. In only 36 minutes your object
significantly changes shape and brightness. The object does not
move with Kreutz speeds for this time of year. You should not be
posting 3 position claims (especially an archive) with such an
ambiguous object. We don't always expect new people to know what
"obvious" means, but we hope you know the difference at this point.

#COMMENT: SOHO454?
# HEIGHT DATE TIME ANGLE TEL FC COL ROW
8.01 2000/10/07 00:50:05 225.9 C2 10 989.0 44.0
7.45 2000/10/07 01:27:23 225.8 C2 10 953.0 76.0
7.09 2000/10/07 01:50:05 225.6 C2 10 930.0 96.0
6.51 2000/10/07 02:26:05 225.3 C2 10 893.0 129.0
6.09 2000/10/07 02:50:05 225.1 C2 10 867.0 152.0


#COMMENT: SOHO455?
# HEIGHT DATE TIME ANGLE TEL FC COL ROW
6.32 2000/10/12 09:50:05 200.2 C2 10 692.0 17.0
6.09 2000/10/12 10:06:05 199.4 C2 10 679.0 33.0
5.81 2000/10/12 10:26:05 198.4 C2 10 663.0 52.0
5.42 2000/10/12 10:51:26 197.1 C2 10 643.0 80.0
5.21 2000/10/12 11:06:06 196.1 C2 10 631.0 95.0
4.89 2000/10/12 11:27:26 194.4 C2 10 612.0 117.0
4.53 2000/10/12 11:51:23 192.4 C2 10 592.0 143.0

Please email me with any questions regarding these claims.

Derek
Jun 05 2002 09:43:07 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
20020605 1213 724 1020
20020605 1252 728 998
20020605 1331 730 976

Regards, Rainer
Jun 05 2002 10:05:36 Rob Matson
matsonr@saic.com
2002 June 5 - Possible comet in C2 real-time images beginning

at 12:52. 1024x1024 approx. coordinates (0,0 in upper left):

2002-06-05 12:52 727, 997
13:31 731, 976
13:54 732, 963

Awaiting further images to confirm. --Rob
Jun 05 2002 10:09:23 Rob Matson
matsonr@saic.com
I should have hit "refresh" on the What's New page before

posting. Rainer first -- congrats, I can confirm. I didn't
think the first point at 12:13 was real, so I waited for
the 13:54 image before posting... --Rob
Jun 05 2002 10:14:03 Maik Meyer
maik@comethunter.de
I can confirm Rainers and Robs reports. Very faint one - eagle eye

Rainer in 512 b/w images! Congrats to both - if it is confirmed.

Maik
Jun 05 2002 10:22:02 Rainer Kracht
R.Kracht@t-online.de
UPDATE 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
20020605 1213 724 1020
20020605 1252 728 998
20020605 1331 730 976
20020605 1354 732 962
20020605 1406 732 954

It's a faint Kreutz sungrazer now visible
in five consecutive images

Rainer
Jun 05 2002 10:37:43 michael boschat
aa063@chebucto.ns.ca
Possible comet in C3 images - 20020605_1218 UT

****** 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
--------------------------------------------
20020605_1218.gif 512 x 512 293, 288
20020605_1243.gif 512 x 512 291, 288

Mike Boschat
Jun 05 2002 10:55:53 mike boschat
aa063@chebucto.ns.ca
Disregard  Jun 05 2002 10:37:43 post
Noise!

MB
Jun 05 2002 11:15:01 Scarmato Toni
toniscarmato@libero.it
Possible comet in C3 starting at


2002/06/05 1243 (389,363)

Other positions at next post

Regards,

Toni Scarmato
Jun 05 2002 11:19:18 michael boschat
aa063@chebucto.ns.ca
OT - how many comets found in C2 now?
3 or 4? I see that faint one finally
as images are in, but the updates in B&W
give anotherfor #4 by Rainer?

Mike
Jun 05 2002 11:20:38 Scarmato Toni
toniscarmato@libero.it
Update my last report


2002/06/05

512x512 (0,0) top-left corner

12:43 (389,363)
13:42 (385,358)
14:18 (382,355)


I am waiting other images to confirm


Regards,

Toni Scarmato
Jun 05 2002 11:29:02 Scarmato Toni
toniscarmato@libero.it
Regarding my last report nothing visibile 

at 14:42.

Toni
Jun 05 2002 17:14:50 Derek Hammer
derek@sungrazer.nascom.nasa.gov
Hey there, 

Well, as most of you noticed, the LASCO doors reopened
today and we were graciously greeted with another comet...I too
confirm R. Kracht's C2 comet from earlier today. Approximate
positions follow this message. This brings our total to 455 with
1 pending.

Mike, claiming comets with only 2 positions? In C3? Surely you
didn't think the object you reported was obvious.


# HEIGHT DATE TIME ANGLE TEL FC COL ROW
6.50 2002/06/05 12:52:25 204.2 C2 10 728.0 25.0
6.28 2002/06/05 13:31:47 205.5 C2 10 731.0 47.0
6.14 2002/06/05 13:54:05 206.2 C2 10 732.0 60.0
6.07 2002/06/05 14:06:07 206.7 C2 10 733.0 67.0
5.94 2002/06/05 14:30:05 207.5 C2 10 734.0 80.0
5.69 2002/06/05 15:06:06 209.3 C2 10 737.0 105.0
5.53 2002/06/05 15:30:05 210.3 C2 10 738.0 120.0
5.37 2002/06/05 15:54:05 211.5 C2 10 739.0 136.0


Derek
Jun 06 2002 11:16:20 Maik Meyer
maik@comethunter.de
Real time comet in C2 images starting from 04:30 UT


Coordinates follow immediately.

Maik
Jun 06 2002 11:22:17 Maik Meyer
maik@comethunter.de
Real time comet in C2 images starting from 04:30 UT


1024x1024, 0,0 upper left

04:30 756, 1014
04:54 758, 999
05:06 759, 992
05:30 761, 979
05:54 762, 963
06:06 763, 955
06:30 764, 942

Faint one. Kreutz track

Maik
Jun 06 2002 11:28:20 Maik Meyer
maik@comethunter.de
Of course the date is 6 June 2002, as implicated by saying 

"real-time".

Maik
Jun 06 2002 13:33:59 Derek Hammer
derek@sungrazer.nascom.nasa.gov
Nice find Maik. Today's C2 comet makes the count 456 with one

pending. Approximate positions below.

Unless stated otherwise, the positions I (or Doug) list will
always be for 1024x1024 images, with (0,0) at bottom left corner.


#COMMENT: SOHO457?
# HEIGHT DATE TIME ANGLE TEL FC COL ROW
6.81 2002/06/06 04:30:05 206.3 C2 10 757.0 11.0
6.68 2002/06/06 04:54:31 207.0 C2 10 758.0 24.0
6.61 2002/06/06 05:06:06 207.5 C2 10 759.0 31.0
6.47 2002/06/06 05:30:05 208.4 C2 10 761.0 45.0
6.32 2002/06/06 05:54:06 209.3 C2 10 762.0 60.0
6.25 2002/06/06 06:06:07 209.7 C2 10 763.0 67.0
6.09 2002/06/06 06:30:05 210.6 C2 10 764.0 82.0
5.93 2002/06/06 06:54:05 211.5 C2 10 765.0 97.0
5.71 2002/06/06 07:31:47 213.4 C2 10 766.0 121.0
5.56 2002/06/06 07:54:05 214.5 C2 10 766.0 136.0
5.48 2002/06/06 08:06:05 215.0 C2 10 766.0 144.0

Derek
Jun 07 2002 00:44:14 Dwight Hanson
djhanson@hotpop.com
Possible comet in real-time C2:


7-Jun-2002, 1024x1024, (x=0,y=0) upper-left

02:54 - (875,950)
03:06 - (875,942)
03:30 - (875,929)
03:54 - (875,914)

--DJ Hanson
Jun 07 2002 00:57:12 Rob Matson
matsonr@saic.com
DJ -- looks pretty good to me.  Here are the five positions

I've got for it in C2 (1024x1024, 0/0 in upper left):

02:54 875, 947
03:06 874, 942
03:30 873, 928
03:54 873, 913
04:06 873, 906

Moves with a consistent velocity and direction, thought the
brightness seems to vary a bit... --Rob
Jun 07 2002 01:33:30 Hanson Dwight
djhanson@hotpop.com
UPDATE - possible comet now visible in 

5 consecutive C2 images. Due to possible
GSFC computer formatting problems, there
were no images between 00:06 and 02:54.

7-May-2002, 1024x1024, (x=0,y=0) upper-left

02:54 - (875,950)
03:06 - (875,942)
03:30 - (875,929)
03:54 - (875,914)
04:06 - (874,907)

--DJ Hanson

Boise, Idaho USA
Jun 07 2002 01:40:12 XingMing Zhou
zh_x_m@163.net
Yes, Nice find DJ Hanson. congratulations!!


XingMing
Jun 07 2002 05:51:25 Maik Meyer
maik@comethunter.de
Another real time C2 comet in C2


7 June 2002

1024cx1024, 0,0 upper left

08:54 758, 875
09:06 757, 866
09:30 758, 852 (extrapolated b/w)

Confirmation with next images

Maik
Jun 07 2002 06:22:07 Maik Meyer
maik@comethunter.de
Update


Real time Kreutz comet in C2

7 June 2002

1024x1024, 0,0 upper left

08:54 757, 874
09:06 758, 866
09:30 758, 850
09:54 758, 834 (extrapolated b/w)

The previous images are not yet sent down to the EOF workstation
and may become available later as playback. In the 10:06 b/w I
can't see anything at the extrapolated position - but the processed
images should contain it.

Regards, Maik

Jun 07 2002 06:37:57 Maik Meyer
maik@comethunter.de
Last update, confirmation of real time Kreutz comet in C2, 7 June 2002


1024x1024, 0,0 upper left

...
08:54 757, 874
09:06 758, 866
09:30 758, 850
09:54 758, 833
10:06 758, 825

Last image very faint. Hopefully the preceding images will become
available, too. Should be visible first in the image of 05:30 UT.

Maik
Jun 07 2002 08:59:35 Xavier Leprette
xavier.leprette@wanadoo.fr
 possible Kreutz comet in a real-time C2 images now.


The object is faint, without tail and it is visible in 2 consecutive images
on 2002/06/07 from 05:06 to 05:30 UT.

Positions measured from the top-left corner of a 1024x1024 frames :
col, row
05:06 UT 747,1015

Xavier Leprette
Jun 07 2002 09:03:50 Xavier Leprette
xavier.leprette@wanadoo.fr
A possible Kreutz comet in a real-time C2 images now.

UPDATE : Obvious object

The object is fuzzy, without tail and it is visible in 3 consecutive images
on 2002/06/07 from 04:54 to 05:30 UT.

Positions measured from the top-left corner of a 1024x1024 frames :
col, row
04:54 UT 747,1018
05:06 UT 747,1015
05:30 UT 750,1000

Xavier Leprette
Jun 07 2002 09:17:43 Sebastian Hoenig
Sebastian@sungrazer.org
Xavier,


the positions match the same object Maik has reported earlier
today.

Regards, Sebastian
Jun 07 2002 09:22:33 Xavier Leprette
xavier.leprette@wanadoo.fr
UPDATE : 

I can confirm my previous reports. The comet is visible now in 11
consecutive images from 04.54 to 8:30 UT.
Perhaps a second fragment is following the first in 6:54 and 07:31, but
I am not sure.
Second fragment ?
Positions measured from the top-left corner of a 1024x1024 frames :
col, row
06:54 755,952
07:31 755,930

Xavier Leprette

Jun 07 2002 09:27:15 Maik Meyer
maik@comethunter.de
Yes, Xaviers report is the one I reported earlier. My extrapolation

backwards was not exact, I estimated it to become visible at 05:30 UT
- actually it is already seen at 04:54 UT.

Maik
Jun 07 2002 11:22:23 David Evans
dave.nokia3330@orange.net
Possible Kreutz comet in LASCO C2 real-time images


Date: 07 June 2002

Brief description: Faint, point-like, no tail.


Positions: 1024x1024 images, (0,0) top left

Time x y
10:30 771 100
11:06 771 121
11:51 770 154


Regards,

David Evans
dave.nokia3330@orange.net
Jun 07 2002 11:24:25 David Evans
dave.nokia3330@orange.net
Appologies: Previous posting should read position 0,0 BOTTOM LEFT



Time x y
10:30 771 100
11:06 771 121
11:51 770 154


Regards,

David Evans
dave.nokia3330@orange.net
Jun 07 2002 15:26:32 Derek Hammer
derek@sungrazer.nascom.nasa.gov
Hello,

I can confirm both C2 comets visible today. Approximate
positions follow. Congratulations to DJ for his first SOHO
discovery. The other comet belongs to Maik. We're up to 458
confirmed comets, with 1 pending.

Xavier: You are reporting the comet identified earlier by Maik.

Dave: Your object is just random noise (cosmic rays). The reason
we ask for 4 points is that, if one looks hard enough, you can
almost always find three points (noise) that will line up OK.
Also, if the object was real you would have certainly seen it in
earlier images. Plus, a real object would have been visible in the
10:54 image. Last, notice that the shape of your object dramatically
changes in appearance in each frame. This is not typical of comets
we observe in LASCO.

Regarding missing images: We do not have constant contact
with SOHO through the Deep Space Network (DSN). Upon regaining
contact after a period of silence, it takes time to download the
data, then manually process and distribute the final product on
the web. The scheduled times of contact can be viewed at...

http://sohowww.nascom.nasa.gov
select "Operations"
select "Spacecraft" under THE FUTURE/Schedules

Notice your missing images (which are now available) coincide with
periods of silence.

#COMMENT: SOHO458?
# HEIGHT DATE TIME ANGLE TEL FC COL ROW
7.37 2002/06/07 01:31:45 217.2 C2 10 874.0 29.0
7.27 2002/06/07 01:54:05 217.8 C2 10 874.0 41.0
7.20 2002/06/07 02:06:05 218.4 C2 10 875.0 48.0
7.06 2002/06/07 02:30:05 219.2 C2 10 874.0 62.0
6.94 2002/06/07 02:54:05 220.0 C2 10 874.0 75.0
6.88 2002/06/07 03:06:05 220.4 C2 10 874.0 81.0
6.74 2002/06/07 03:30:05 221.5 C2 10 874.0 97.0
6.60 2002/06/07 03:54:07 222.4 C2 10 873.0 111.0
6.55 2002/06/07 04:06:06 222.9 C2 10 873.0 117.0
6.41 2002/06/07 04:30:06 223.9 C2 10 872.0 132.0
6.27 2002/06/07 04:54:05 225.0 C2 10 871.0 147.0
6.21 2002/06/07 05:06:05 225.6 C2 10 871.0 154.0
6.08 2002/06/07 05:30:05 226.7 C2 10 870.0 169.0
5.94 2002/06/07 05:54:05 228.0 C2 10 869.0 185.0
5.87 2002/06/07 06:06:05 228.6 C2 10 868.0 192.0

#COMMENT: SOHO459?
# HEIGHT DATE TIME ANGLE TEL FC COL ROW
6.84 2002/06/07 04:54:05 205.0 C2 10 747.0 4.0
6.78 2002/06/07 05:06:05 205.4 C2 10 748.0 10.0
6.63 2002/06/07 05:30:05 206.1 C2 10 749.0 24.0
6.47 2002/06/07 05:54:05 207.0 C2 10 750.0 39.0
6.40 2002/06/07 06:06:05 207.4 C2 10 751.0 46.0
6.25 2002/06/07 06:30:05 208.3 C2 10 752.0 61.0
6.12 2002/06/07 06:54:05 209.1 C2 10 753.0 74.0
5.88 2002/06/07 07:31:45 210.7 C2 10 755.0 98.0
5.74 2002/06/07 07:54:07 211.7 C2 10 756.0 112.0
5.66 2002/06/07 08:06:05 212.2 C2 10 756.0 119.0
5.51 2002/06/07 08:30:07 213.4 C2 10 757.0 135.0
5.34 2002/06/07 08:54:05 214.6 C2 10 757.0 151.0
5.27 2002/06/07 09:06:06 215.3 C2 10 758.0 159.0
5.12 2002/06/07 09:30:05 216.5 C2 10 758.0 174.0
4.96 2002/06/07 09:54:07 218.0 C2 10 758.0 191.0
4.89 2002/06/07 10:06:05 218.6 C2 10 758.0 198.0
4.71 2002/06/07 10:30:20 220.2 C2 10 757.0 216.0


Derek
Jun 08 2002 10:46:56 Rainer Kracht
R.Kracht@t-online.de
Meyer group comet in archival C2 images of 2000 December 03.


C2, 1024x1024, 0,0 upper left

22081754.fts 14:06 695, 171
22081755.fts 14:26 703, 151
22081756.fts 14:50 712, 129
22081757.fts 15:06 718, 114
22081758.fts 15:26 726, 97
22081759.fts 15:50 734, 76
22081760.fts 16:06 740, 63
22081761.fts 16:26 746, 46
22081762.fts 16:50 753, 28
22081763.fts 17:06 758, 16
22081764.fts 17:26 763, 2

small, condensed comet

Rainer
Jun 08 2002 13:26:05 Dwight Hanson
djhanson@hotpop.com
Possible comet in real-time C2:


8-Jun-2002, 1024x1024, (x=0,y=0) upper-left

05:30 - (847,1023)
05:54 - (846,1006)
06:06 - (846,1000)
06:30 - (846, 985)
06:54 - (846, 968)
07:31 - (845, 945)
08:06 - (843, 921)
08:30 - (841, 905)
09:06 - (840, 880)

--DJ Hanson
Jun 08 2002 15:22:20 Rob Matson
matsonr@saic.com
Nice C2 find, DJ, particularly considering the difficult

location relative to the bright solar streamer. Two
comets in 2 days -- congrats! --Rob
Jun 08 2002 17:02:49 Steven Bevacqua
steve_bev@hotmail.com
Possible comet in LASCO real-time C2 images:


2002/06/07, 512x512, (0,0) upper left

Time x,y
12:06 146,336
12:30 155,371
12:54 174,398
13:31 185,408

Thanks,

Steven Bevacqua

Jun 08 2002 19:09:08 Mark Ledingham
mark-le@online.no
A possible sungrazer in real-time C2 images. Lower-right.


Brief Description:
The object appears to have a tail at 20:30. I am
somewhat uncertain about its appearance at 19:31.

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

2002/06/08 19:31 C2 (716, 902)
2002/06/08 19:54 C2 (699, 875)
2002/06/08 20:06 C2 (679, 830)
2002/06/08 20:30 C2 (662, 805)

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

- Mark Ledingham
Jun 10 2002 11:52:17 Steven Bevacqua
steve_bev@hotmail.com
Possible comet in real-time LASCO C2 images


Date: June 9, 2002

Positions: 1024x1024 images, (0,0) upper left

Time (x,y)

17:54 151,888
18:06 158:937
18:30 170:977

Regards,

Steven Bevacqua
Jun 10 2002 14:23:14 Mark Ledingham
mark-le@online.no
A possible Kreutz comet in LASCO C2 real-time images.


The object is extremely faint. Lower bottom right.

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

2002/06/10 15:30 C2 (860, 909)
2002/06/10 15:54 C2 (868, 911)
2002/06/10 16:06 C2 (872, 912)
2002/06/10 16:30 C2 (876, 913)
2002/06/10 16:54 C2 (880, 914)

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

- Mark Ledingham
Jun 10 2002 14:37:43 Mark Ledingham
mark-le@online.no
And yet another in the same time period as my previous report!

A possible Kreutz comet in LASCO C2 real-time images.

Lower bottom right. Moving from right to left toward a sunray
on the lower right - but not a planet. Nice tail plume at 16:06!

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

2002/06/10 15:54 C2 (783, 796)
2002/06/10 16:06 C2 (773, 797)
2002/06/10 16:30 C2 (769, 797)
2002/06/10 16:54 C2 (763, 798)

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

- Mark Ledingham
Jun 10 2002 15:51:57 Rob Matson
matsonr@saic.com
Hi Mark,


I haven't checked your prior report, but your most recent one
is not a comet. Whenever a candidate object is moving in a
non-Kreutz (or Meyer or other) expected trajectory, you should
raise a warning flag that the object's velocity and brightness
must be very compelling. A cursory glance at your coordinates
quickly reveals that your object (if it was real) would have
to be moving in a non-linear fashion:

2002/06/10 15:54 C2 (783, 796)
2002/06/10 16:06 C2 (773, 797) -10, +1
2002/06/10 16:30 C2 (769, 797) -4, +0
2002/06/10 16:54 C2 (763, 798) -6, +1

From 15:54 to 16:06 the x-velocity is -10 pixels/12 minutes,
yet from 16:06 to 16:30 it is only -4 pixels/24 minutes --
a factor of 5 times slower. So it cannot be a real object.

Best,
Rob

Jun 10 2002 23:05:51 Mark Mayo
msm45@student.canterbury.ac.nz
I believe there is a chance of a sighting here - although there are a couple of cosmic rays or something nearby so I'm not too sure.


(0,0) is top left, viewed in the LASCO C3 1024x1024 images.

20020609_1142_c3.gif - (463, 781)
20020609_1218_c3.gif - (458, 769)
20020609_1242_c3.gif - (458, 761)
20020609_1342_c3.gif - (460, 750)

Appears to be almost linear in speed and everything like that.

It may also appear in the 1442 image, but I'm not confident on that.
Jun 10 2002 23:07:15 Mark Mayo
msm45@student.canterbury.ac.nz
And I apologise for the wrapping - I had typed it in notepad first,

and simply copied and pasted.
Jun 11 2002 09:15:39 Scarmato Toni
toniscarmato@libero.it
Possible comet in C2


starting at 12:06 (414,460) 512x512 (0,0) top-left


Other positons at next post

Toni Scarmato
Jun 11 2002 09:19:25 Scarmato Toni
toniscarmato@libero.it
Update bright comet in c2


2002/06/11 512x512 (0,0) top-left

11:54 (414,466)
12:06 (414,462)
12:30 (414.455)

Comet condensed in Kreutz orbit.


Toni Scarmato
Jun 11 2002 09:36:59 Maik Meyer
maik@comethunter.de
Congrats Toni,


I can confirm this one.

Maik
Jun 11 2002 11:38:04 Odile Nelson
onelson@nationalpost.com
Hello,


I'm actually writing to see if there are any Canadians involved in this comet hunting. I work for a national newspaper in Canada and would like to do a story if possible. Thanks
Odile Nelson
onelson@nationalpost.com
416-510-6850
Jun 11 2002 12:12:03 Rob Matson
matsonr@saic.com
Presumably the following two points are a continuation of

Tony's C2 comet [512,512 0/0 upper left]:

15:30 406, 443 [812, 786 in 1024x1024]
15:54 404, 434

--Rob
Jun 11 2002 15:07:39 Monte Collard
montecollard@attbi.com
C2 1024x1024 image size

Point x y yyyymmdd hhmm
0 684 131 20020611 0606
1 630 164 20020611 0630
2 586 183 20020611 0654

I a not sure if this is noise, but it sees to have a pattern. 3 consecutive images . I couldnt check out images after 0654.
Please excuse if this is a mistake.
Monte
Jun 12 2002 02:13:20 Rob Matson
matsonr@saic.com
2002 June 12 - Possible comet in C2 real-time images beginning

at 05:30. 512x512 B&W approx. coordinates (0,0 in upper left):

2002-06-12 05:30 429, 533
05:54 428, 526
06:06 429, 523

Awaiting further images to confirm. --Rob
Jun 12 2002 02:47:57 Rob Matson
matsonr@saic.com
I rescind my earlier report -- nothing compelling in the 1024x1024

imagery... --Rob
Jun 12 2002 04:53:32 Steven Bevacqua
steve_bev@hotmail.com
Possible comet in LASCO C2 images


Date: Jun 11, 2001


Positions: 1024x1024 images, (0,0) upper left

Time (x,y)

11:54 828,929
12:06 828,922
12:30 827,908

Unfortunately, missing the previous and next few images.

Thanks,

Steven Bevacqua
Jun 12 2002 05:07:29 Maik Meyer
maik@comethunter.de
Steve,


this was already reported yesterday by Toni Scarmato. Just scroll
down.
Maik
Jun 12 2002 16:02:34 Rob Matson
matsonr@saic.com
2002 June 12 - Possible comet in C2 real-time images beginning

at 18:54. 512x512 B&W approx. coordinates (0,0 in upper left):

2002-06-12 18:54 346, 561
19:31 337, 550
19:54 332, 543

Awaiting further images to confirm. --Rob
Jun 12 2002 16:30:18 Rob Matson
matsonr@saic.com
Nothing visible at 20:06, so must have been noise.  Shows why

Doug is right to ask us to wait for at least 4 images -- compelling
alignments and velocities do occasionally occur with triplets.

--Rob
Jun 13 2002 08:53:44 Christian Virella
sharkmx14@yahoo.com
Hi, its me Christian, listen I may have reason to believe that I may have found a comet using my 3 foot telescope. I had to use a 3 x Barlow lens with a HI2.5mm lens combined to see the comet with detail. I found the comet at 8:30 P.M. EST time, and I found the comet in between the constellation Cancer and Hydra. And I have reason to believe that on the 17 or maybe 18 of June it will be in the head of Hydra. And the object was moving very quickly through the lens, and I've watched it for at least 2 days. And after you have checked out the comet write me back at "Sharkmx14@yahoo.com" bye. 
Jun 13 2002 09:02:08 Christian Virella
sharkmx14@yahoo.com
Hi its me Christian again, listen I forgot to tell you that I found the comet on Wednesday June 12. Bye. 
Jun 13 2002 09:51:57 Xavier Leprette
xavier.leprette@wanadoo.fr
A possible Kreutz comet in a real-time C2 images now.


The object is very faint and it is visible in 4 consecutive images
on 2002/06/13 from 10:54 to 11:54 UT.
I am not sure that it is a real object? May be it's only noise.

Positions measured from the top-left corner of a 1024x1024 frames :
col, row
10:54 851,1014
11:06 849,1004
11:30 848,988
11:54 847,972

Xavier Leprette
Jun 13 2002 09:54:37 Doug Biesecker
doug@sungrazer.nascom.nasa.gov
Hi all,

Long time since you've heard from me. I just want to make
a few comments. Remember, it's very easy for cosmic rays and
other features to create a pair or even three points which line
up nicely. Especially for new folks, guessing after three is not
really appreciated. When you've gained experience, then
occasional posts with fewer than 4 posts are okay.

Also, if you didn't find it in SOHO data, then this isn't
the place to tell us about it. Please, SOHO comets only on these
pages.

Doug
Jun 13 2002 10:03:20 Dwight Hanson
djhanson@hotpop.com
Possible comet in real-time C2:


13-Jun-2002, 1024x1024, (x=0,y=0) upper-left

10:54 - (851,1011)
11:06 - (850,1005)
11:30 - (850, 989)
11:54 - (849, 974)
12:06 - (847, 968)

Kreutz path, very dim, very diffuse using magnification.

--DJ Hanson
Jun 13 2002 11:16:34 Xavier Leprette
xavier.leprette@wanadoo.fr
Hi DJ Hanson,

I think you have reported the same object that me.
My position for 12:06 image is :
12:06 845,967

But is it real? wait and see Doug's decision.

Xavier Leprette
Jun 13 2002 13:03:06 Doug Biesecker
doug@sungrazer.nascom.nasa.gov

I've examined all of the posts from the past week. I can confirm
2 additional comets, with 2 posts still undecided. The two
confirmed ones are the R. Kracht archive find from Dec 3, 2000 and
T. Scarmato C2 find from June 11. Rough positions below. I believe
that takes the number of confirmed comets to 460, with a few
claims pending.

Doug

# HEIGHT DATE TIME ANGLE TEL FC COL ROW
6.88 2000/12/03 17:26:06 333.7 C2 10 764.0 1021.0
6.70 2000/12/03 17:06:05 333.7 C2 10 758.0 1007.0
6.55 2000/12/03 16:50:05 333.6 C2 10 753.0 995.0
6.32 2000/12/03 16:26:05 333.4 C2 10 746.0 977.0
6.12 2000/12/03 16:06:05 333.3 C2 10 739.0 961.0
5.94 2000/12/03 15:50:05 333.2 C2 10 733.0 947.0
5.69 2000/12/03 15:26:05 332.9 C2 10 725.0 927.0
5.47 2000/12/03 15:06:07 332.6 C2 10 719.0 909.0
5.28 2000/12/03 14:50:05 332.4 C2 10 713.0 894.0
4.98 2000/12/03 14:26:05 332.0 C2 10 704.0 871.0

# HEIGHT DATE TIME ANGLE TEL FC COL ROW
7.29 2002/06/11 09:30:07 213.2 C2 10 831.0 8.0
7.15 2002/06/11 09:54:06 213.9 C2 10 831.0 22.0
7.07 2002/06/11 10:06:05 214.2 C2 10 830.0 29.0
6.94 2002/06/11 10:30:22 215.1 C2 10 831.0 43.0
6.80 2002/06/11 10:54:05 215.8 C2 10 830.0 56.0
6.72 2002/06/11 11:06:05 216.3 C2 10 830.0 64.0
6.57 2002/06/11 11:30:05 217.1 C2 10 829.0 79.0
6.43 2002/06/11 11:54:05 217.9 C2 10 828.0 93.0
6.35 2002/06/11 12:06:05 218.5 C2 10 828.0 101.0
6.21 2002/06/11 12:30:05 219.4 C2 10 827.0 115.0
Jun 13 2002 14:04:06 Dwight Hanson
djhanson@hotpop.com
Xavier,


Sorry, reported today's C2 object after you did (didn't refresh). I think it's real, but we'll wait on Doug's decision. Congrat's on the find if it is real:)

Doug,

I really think my C2 object from June 8th is real...I can see it in 9 consecutive frames, even against a pretty good solar streamer and others have confirmed it as well. But you're the decision maker:)

Regards,

--DJ Hanson
Jun 13 2002 15:43:08 Christian Virella
sharkmx14@yahoo.com
Hi its me Christian again, listen I also forgot to tell about the magnitude. Since the comet is almost invisible to the naked eye, I would estimate that the magnitude would be about 11 or 12.3 around there. And when I looked at the comet through the telescope it looked like a moving white blob with a coma around it. Write me back at "sharkmx14@yahoo.com" after you have spoted the comet yourself in between Cancer and Hydra put make sure to spot it quick because maybe around June 17 or 18 it will move into Hydras head. Bye. 
Jun 13 2002 20:18:14 David Evans
dave.nokia3330@orange.net
Possible Kreutz comet in real time C2.


Faint object visible in 4 consecutive images 2002/06/13

1024x1024 0,0 lower left

19:31 830, 86
19:54 829, 101
20:06 828, 109
20:30 827, 125

Regards

Dave Evans
dave.nokia3330@orange.net
Jun 13 2002 20:56:50 David Evans
dave.nokia3330@orange.net
Possible Kreutz comet in real time C2.


Update to my previous posting.

The object appears to be visible in previous images, gradually brightening to maximum magnitude then becoming fainter thereafter, as follows:

2002/06/13
1024x1024 0,0 lower left

17:54 835, 24
18:07 835, 33
18:30 834, 47
18:54 833, 62
19:31 830, 86 (maximum magnitude)
19:54 829, 101
20:06 828, 109
20:30 827, 125

Regards

Dave Evans
dave.nokia3330@orange.net
Jun 14 2002 04:43:05 Sebastian Hoenig
Sebastian@sungrazer.org
David,


Congratulations to your first discovery. I can confirm you report,
although the comet is very faint - I hope it will become official.

Regards, Sebastian
Jun 14 2002 04:47:36 Sebastian Hoenig
Sebastian@sungrazer.org
Poss. Kreutz comet lin LASCO C2 enerting 08:06


Positions soon.

Sebastian Hoenig
Jun 14 2002 04:51:25 Sebastian Hoenig
Sebastian@sungrazer.org
Disregard last message. 


Regards, Sebastian
Jun 14 2002 09:47:12 Scarmato Toni
toniscarmato@libero.it
Possible comet in C3 visible in 4 

consecutive images.

2002/06/14 512x512 (0,0) top-left corner

11:18 (342,299)
11:42 (341,298)
12:18 (338,296)
12:42 (337,295)


Faint object moving toward the sun.The velocity seem
in agreement with time intervall.
I am waiting other images to confirm.

Regards,

Toni Scarmato


Jun 14 2002 10:08:11 Scarmato Toni
toniscarmato@libero.it
Regarding my last report, on 512x512 pixels image

I am not been able to find the object at 13:42.

Regards,

Toni Scarmato
Jun 14 2002 18:31:14 Derek Hammer
derek@sungrazer.nascom.nasa.gov
Quick Update


Xavier: We have decided that your 2 claims of a comet in May 13th
and June 13th images (2002) are not conclusive. We are
designating them as X comets. For those who don't know,
X comets are those claims we believe have a chance of being
real but do not display enough conclusive evidence and/or do
not satisfy the minimum requirements (ex. 4 images).

DJ: We have confirmed your June 8th, 2002 comet.

Dave: Your recent June 13th claim is pending.

Therefore, we are up to 461 confirmed reports, with one pending.
An updated table reflecting the now current SOHO #'s will appear soon.

Derek
Jun 14 2002 22:23:51 Dwight Hanson
djhanson@hotpop.com
Possible comet in real-time C2:


14-Jun-2002, 1024x1024, (x=0,y=0) upper-left

19:06 - (881, 940)
19:30 - (880, 926)
19:54 - (877, 910)
20:06 - (876, 901)
20:30 - (872, 885)
21:08 - (867, 860)
21:30 - (861, 846)

Kreutz path, begins to curve towards sun hence
differences in x-coordinates. Object is very
dim, very diffuse using magnification and
individual image blinking.

Any confirmations appreciated:)

--DJ Hanson
Jun 15 2002 02:06:14 Maik Meyer
maik@comethunter.de
DJ,


it would be very strange if an object first straight on the
Kreutz path would suddenly make such a curve and deviate from it.
The other question is where it was before 19:06. So, I would
regard it as very questionable. The indicated points are really
quite faint and convincing, too, looking more like noise.

Hope this helps, Maik
Jun 15 2002 02:07:33 Maik Meyer
maik@comethunter.de
Sorry, for "convincing" read "unconvincing". Maik

Jun 15 2002 02:53:11 Dwight Hanson
djhanson@hotpop.com
Thanks Maik.  Not sure about this one, either.

First 2 points may be questionable.

Thanks:)

--DJ Hanson
Jun 15 2002 06:13:01 Michael Oates
mike@ph.u-net.com
Comet in realtime C2 images

In lots of images
(0,0 in bottom left corner in 1024x1024 images)
Image Col Row
20020615_0850_c2.gif 867 74

Michael Oates
Jun 15 2002 06:21:50 Michael Oates
mike@ph.u-net.com
UPDATE: Comet in realtime C2 images

Kreutz comet, faint and diffuse, no tail.
(0,0 in bottom left corner in 1024x1024 images)
Image Col Row
20020615_0850_c2.gif 867 74
20020615_0855_c2.gif 866 75
20020615_0905_c2.gif 865 83
20020615_0910_c2.gif 865 85
20020615_0920_c2.gif 863 91
20020615_0925_c2.gif 863 95
20020615_0935_c2.gif 861 102

Michael Oates
Jun 15 2002 07:32:21 Mark Ledingham
mark-le@online.no
A possible Kreutz comet in LASCO C2 real-time images.


The object is extremely faint. Lower bottom right. I assume this is not the same object as reported by Michael Oates at 06:21:50. This must be something new, and it is continuing on a path towards the sun.

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

2002/06/15 09:20 C2 (863, 933)
2002/06/15 09:25 C2 (863, 929)
2002/06/15 09:35 C2 (862, 923)
2002/06/15 09:40 C2 (862, 918)
2002/06/15 09:50 C2 (861, 912)

* Coordinates mesured in 1024x1024 images, (0,0) is top-left corner.
Jun 15 2002 07:38:34 Mark Ledingham
mark-le@online.no
Sorry, I forgot to include my name

- and use carriage returns on the
report made at 07:32:21. Please
confirm if this seems correct.
Thanks!

- Mark Ledingham
Jun 15 2002 07:56:52 Sebastian Hoenig
Sebastian@sungrazer.org
Mark,


it is the same object like the mone reported by Mike. Compare
the positions. Yet another comet found during a German WC match
(like the one found by Toni on Tuesday) :)

Regards, Sebastian
Jun 15 2002 09:22:43 Scarmato Toni
toniscarmato@libero.it
Another possible comet in C2

starting at

2002/06/15 11:25 (425,425) 512x512 (0,0) top-left corner

I not think that is the comet of Mike.
Other positions at next post


Toni Scarmato
Jun 15 2002 09:53:02 Scarmato Toni
toniscarmato@libero.it
Instead is Maik's comet.


Toni Scarmato
Jun 15 2002 11:13:23 Mark Ledingham
mark-le@online.no
Congrats to Michael! Your comet, 

as reported this morning (15 June),
is a real beauty. Please disregard my post.

- Mark Ledingham
Jun 15 2002 19:06:01 Rainer Kracht
R.Kracht@t-online.de
Meyer group comet in archival C2 images of 1997 July 25.


C2, 1024x1024, 0,0 upper left

22018066.fts 07:31 895, 245
22018067.fts 08:00 866, 217
22018068.fts 08:30 835, 189
22018069.fts 08:45 820, 175
22018070.fts 09:00 804, 162
22018071.fts 09:25 777, 139
22018072.fts 10:09 728, 102
22018073.fts 10:35 698, 81

small comet

Rainer
Jun 16 2002 18:24:48 Derek Hammer
derek@sungrazer.nascom.nasa.gov
Hello, 


There are 2 more confirmed reports from M. Oates (6/15/02)
and R. Kracht (7/25/97). DJ, your claim is quite unpredictable
early on and thereafter lies at the background level of noise.
It is impossible to distinguish between something real and noise
at the your object's magnitude & size in such a limited amount of
images.

Here is the updated list I had promised....


IAU
SOHO# Name Date Camera Designation MPEC IAUC
------------------------------------------------------------------
436 R. Kracht 02/05/03 C2 C/2002 J2 2002-J29 7897
437 R. Kracht 98/11/03 C2 C/1998 V8 2002-J39 7916
438 X. Leprette 98/11/08 C2 C/1998 V9 2002-K48 7916
439 R. Kracht 98/11/28 C2,C3 C/1998 W7 2002-J39 7916
440 M. Meyer 98/12/07 C2 C/1998 X12 2002-J39 7916
441 R. Kracht 00/02/04 C2 C/2000 C7 2002-K48 7919
442 K. Cernis 02/05/13 C2 C/2002 J8 2002-K72 7913
443 K. Cernis 02/05/13-14 C2,C3 C/2002 J3 2002-J46/49 7899
444 X. Leprette 02/05/14 C2 C/2002 J6 2002-K48 7909
445 R. Matson 02/05/15-16 C2 C/2002 J7 2002-K48 7909
446 R. Kracht 02/05/18 C2 C/2002 K3 2002-K48 7909
447 X. Leprette 01/04/17 C2 C/2001 H8 2002-K72 7918
448 M. Meyer 02/05/23 C2 C/2002 K5 2002-K72 7913
449 S. Hoenig 02/05/24 C2,C3 C/2002 K6 2002-K72 7913
450 C. Dong 02/05/25 C2 C/2002 K7 2002-K72 7913
451 R. Kracht 00/03/19 C2 C/2000 F2 2002-K72 7919
452 R. Kracht 00/03/28 C2 C/2000 F3 2002-K72 7919
453 R. Kracht 00/10/07 C2 C/2000 T5 2002-L19 7919
454 R. Kracht 00/10/12 C2 C/2000 T6 2002-L19 7919
455 R. Kracht 02/06/05 C2 C/2002 L1 2002-L22 7916
456 M. Meyer 02/06/06 C2 C/2002 L2 2002-L28 7916
457 D. Hanson 02/06/07 C2 C/2002 L3 2002-L31 7918
458 M. Meyer 02/06/07 C2 C/2002 L4 2002-L31 7918
459 R. Kracht 00/12/03 C2 C/2000 X9 2002-L63 7919
460 D. Hanson 02/06/08 C2 C/2002 L6 2002-L65
461 T. Scarmato 02/06/11 C2 C/2002 L5 2002-L63 7919
462? D. Evans 02/06/13 ***PENDING***
463? M. Oates 02/06/15 C2
464? R. Kracht 97/07/25 C2


Derek
Jun 17 2002 10:02:17 Rainer Kracht
R.Kracht@t-online.de
possible Kreutz sungrazer in C3 realtime images

1315
1330
1345 650,710 (0,0) top left

Rainer
Jun 17 2002 10:08:13 Rainer Kracht
R.Kracht@t-online.de
UPDATE possible Kreutz sungrazer in C3 realtime images

time x y (0,0) top left
1230 650,718
1245 650,716
1300 650,714
1330 650,712
1345 650,710

Rainer
Jun 17 2002 10:19:13 Rainer Kracht
R.Kracht@t-online.de
UPDATE Kreutz sungrazer in C3 realtime images

with better measurements from 1024 * 1024
time x y (0,0) top left
1200 651,721
1215 651,720
1230 651,718
1245 651,717
1300 651,716
1330 650,712 from enlarged 512 * 512
1345 650,710 from enlarged 512 * 512

Rainer
Jun 17 2002 11:06:48 michael boschat
aa063@chebucto.ca
Yep, can confirm Rainer's C3 find. Congrat's!

Mike B.

PS: Why so many C2 and C3 images now? Every 10-20 minutes?
Jun 17 2002 11:15:59 XingMing Zhou
zh_x_m@163.net
Possible Kreutz group comet in real-time C2 images now.

faint, date: 20020617, Size: 512X512
0,0 in upper left corner

Images Col, Row

1355_c2.gif 454, 509
1405_c2.gif 454, 507
1410_c2.gif 454, 505
1420_c2.gif 454, 503

XingMing Zhou
Jun 17 2002 11:37:00 Scarmato Toni
toniscarmato@libero.it
Possible comet in C3 at right of

Rainer comet visible in 5 consecutive images


2002/06/17

13:15 (333,355)
13:30 (333,353)
13:45 (333,352)
14:00 (332,351)
14:15 (332,350)


Regards,

Toni Scarmato
Jun 17 2002 11:50:56 Scarmato Toni
toniscarmato@libero.it
Regarding my last report the images are

512x512 (0,0) top-left corner

Sorry!!!


Toni Scarmato
Jun 17 2002 11:59:27 michael boschat
aa063@chebucto.ca
I can see something in Toni's C3 position after enlarge 512 images
and it looks like it would intersect the Rainer comet.


Mike B.
Jun 17 2002 12:38:06 Sebastian Hoenig
Sebastian@sungrazer.org
I can see neither something at Toni's positions nor on those given

by Xingming regarding full resolution images.

Regards, Sebastian
Jun 17 2002 17:19:42 David Evans
dave.nokia3330@orange.net
Possible Kreutz comet in real time C2, 2002/06/17


0,0 lower left

19:06 785 134
19:10 785 136
19:20 785 146
19:25 784 152
19:35 784 161
19:40 784 168
19:50 784 174
19:55 784 180

The object enters a bright streamer at this stage...

Regards,

Dave Evans


Jun 18 2002 09:44:54 XingMing Zhou
zh_x_m@163.net
Rainer'comet in C2?

0,0 in upper left corner, 512 X 512

time x, y
0720 493, 473
Jun 18 2002 10:31:26 Doug Biesecker
doug@sungrazer.nascom.nasa.gov

Since the last post by Derek, I've been able to confirm only one
claim. That is of course the report by R. Kracht for the real-time
comet in C3 and now in C2. Moderately bright. If you can't see
this one, you're just not looking. Rough positions below.

Doug

# HEIGHT DATE TIME ANGLE TEL FC COL ROW
15.49 2002/06/17 12:00:05 209.8 C3 10 651.0 302.0
15.44 2002/06/17 12:15:05 209.9 C3 10 651.0 303.0
15.37 2002/06/17 12:30:06 210.3 C3 10 652.0 305.0
15.16 2002/06/17 12:45:05 210.3 C3 10 650.0 308.0
15.16 2002/06/17 13:00:05 210.3 C3 10 650.0 308.0
15.08 2002/06/17 13:30:10 210.7 C3 10 651.0 310.0
14.93 2002/06/17 13:45:05 211.0 C3 10 651.0 313.0
14.83 2002/06/17 14:00:05 211.2 C3 10 651.0 315.0
14.80 2002/06/17 14:15:05 211.0 C3 10 650.0 315.0
14.75 2002/06/17 14:30:05 211.2 C3 10 650.0 316.0
14.65 2002/06/17 14:45:05 211.4 C3 10 650.0 318.0
14.55 2002/06/17 15:00:07 211.6 C3 10 650.0 320.0
14.39 2002/06/17 15:15:05 211.5 C3 10 648.0 322.0
14.37 2002/06/17 15:30:05 211.8 C3 10 649.0 323.0
14.32 2002/06/17 15:45:05 211.9 C3 10 649.0 324.0
14.17 2002/06/17 16:00:05 212.3 C3 10 649.0 327.0
14.12 2002/06/17 16:15:05 212.4 C3 10 649.0 328.0
14.01 2002/06/17 16:30:06 212.2 C3 10 647.0 329.0
13.99 2002/06/17 16:45:05 212.5 C3 10 648.0 330.0
13.59 2002/06/17 17:45:05 213.0 C3 10 646.0 337.0
13.49 2002/06/17 18:00:05 213.3 C3 10 646.0 339.0
13.39 2002/06/17 18:15:05 213.6 C3 10 646.0 341.0
13.24 2002/06/17 18:30:05 214.0 C3 10 646.0 344.0
13.24 2002/06/17 18:45:06 214.0 C3 10 646.0 344.0
13.02 2002/06/17 19:15:05 214.3 C3 10 645.0 348.0
12.92 2002/06/17 19:30:05 214.6 C3 10 645.0 350.0
12.79 2002/06/17 19:45:05 214.7 C3 10 644.0 352.0
12.76 2002/06/17 20:00:05 214.5 C3 10 643.0 352.0
12.70 2002/06/17 20:15:05 215.0 C3 10 644.0 354.0
12.52 2002/06/17 20:30:05 215.3 C3 10 643.0 357.0
12.47 2002/06/17 20:45:05 215.4 C3 10 643.0 358.0
12.38 2002/06/17 21:00:05 215.7 C3 10 643.0 360.0
12.33 2002/06/17 21:15:05 215.9 C3 10 643.0 361.0
12.19 2002/06/17 21:30:05 216.4 C3 10 643.0 364.0
12.07 2002/06/17 21:45:05 216.1 C3 10 641.0 365.0
11.97 2002/06/17 22:15:05 216.8 C3 10 642.0 368.0
11.79 2002/06/17 22:30:05 217.1 C3 10 641.0 371.0
11.75 2002/06/17 22:45:05 217.3 C3 10 641.0 372.0
11.57 2002/06/17 23:00:06 217.6 C3 10 640.0 375.0
11.49 2002/06/17 23:15:05 217.5 C3 10 639.0 376.0
11.40 2002/06/17 23:30:05 217.9 C3 10 639.0 378.0
11.43 2002/06/17 23:45:06 218.1 C3 10 640.0 378.0
11.04 2002/06/18 00:15:12 218.9 C3 10 638.0 385.0
8.68 2002/06/18 05:45:05 226.0 C3 10 626.0 429.0
8.47 2002/06/18 06:00:05 226.3 C3 10 624.0 432.0
8.43 2002/06/18 06:15:05 226.6 C3 10 624.0 433.0
8.23 2002/06/18 06:30:05 227.5 C3 10 623.0 437.0
7.98 2002/06/18 07:05:05 228.1 C2 11 991.0 68.0
7.94 2002/06/18 07:10:05 228.3 C2 11 990.0 72.0
7.85 2002/06/18 07:20:05 228.7 C2 11 987.0 80.0
7.83 2002/06/18 07:25:05 228.7 C2 11 986.0 82.0
7.74 2002/06/18 07:35:06 229.2 C2 11 984.0 90.0
7.70 2002/06/18 07:40:05 229.3 C2 11 982.0 94.0
7.61 2002/06/18 07:50:06 229.7 C2 11 980.0 102.0
7.56 2002/06/18 07:55:05 230.0 C2 11 978.0 107.0
7.48 2002/06/18 08:05:05 230.4 C2 11 976.0 114.0
7.44 2002/06/18 08:10:05 230.5 C2 11 974.0 118.0
7.35 2002/06/18 08:20:07 230.9 C2 11 971.0 126.0
7.30 2002/06/18 08:25:05 231.1 C2 11 969.0 130.0
7.18 2002/06/18 08:35:05 231.6 C2 11 965.0 140.0
7.17 2002/06/18 08:40:05 231.8 C2 11 965.0 142.0
7.06 2002/06/18 08:50:07 232.1 C2 11 960.0 150.0
7.02 2002/06/18 08:55:05 232.4 C2 11 959.0 155.0
6.93 2002/06/18 09:05:05 232.7 C2 11 955.0 162.0
6.87 2002/06/18 09:10:05 233.1 C2 11 954.0 168.0

Jun 18 2002 10:36:28 Benoit Rousseau
webmestre@orthoptie.net
Possible Comet in C2 real time images

Image Size = 1024x1024

0, 0 Upper Left.

Point X Y YYYYMMDD HHMM Julmins Height(km)
0 988 76 20020618 0720 3923000 5553463
1 986 79 20020618 0725 3923005 5523338
2 984 87 20020618 0735 3923015 5464593
3 984 91 20020618 0740 3923020 5441825
4 980 98 20020618 0750 3923030 5376151
5 978 102 20020618 0755 3923035 5340534
6 976 111 20020618 0805 3923045 5276998
7 974 113 20020618 0810 3923050 5252681
8 972 122 20020618 0820 3923060 5189604
9 969 126 20020618 0825 3923065 5147661
10 965 135 20020618 0835 3923075 5071744
11 964 138 20020618 0840 3923080 5048738
12 962 146 20020618 0850 3923090 4992102
13 959 150 20020618 0855 3923095 4950381
14 956 161 20020618 0905 3923105 4871551
15 953 162 20020618 0910 3923110 4845798

Benoit Rousseau & Philippe Bertrand (Fontainebleau - FRANCE)
Jun 18 2002 11:38:04 Rainer Kracht
R.Kracht@t-online.de
bright comet in C3?

1515 770,13 (0,0) top left

Rainer
Jun 18 2002 11:58:02 Rainer Kracht
R.Kracht@t-online
UPDATE bright comet in C3?

It is possibly an instrumental effect
reflection from beta Tau?
or from a new, bright object just outside the C3 FOV

Rainer
Jun 18 2002 12:10:58 michael boschat
aa063@chebucto.ns.ca
Comet? Beta Tauri is out of the field.
I don't know were Rainer is looking but
at the 3pm position in C3 Saturn is just going out of the
field. At the 1pm position there's a BRIGHT glare and
it looks like the occulator is off a bit from the
Sun. My guess internal reflection.

Mike B.
Jun 18 2002 12:39:03 Scarmato Toni
toniscarmato@libero.it
Possible faint comet in c2


512x512 (0,0) top-left corner


2002/06/18

1450 491,430
1455 490,428
1505 488,425
1510 487,423
1520 485,420


Regards,

Toni Scarmato
Jun 18 2002 13:31:39 Rainer Kracht
R.Kracht@t-online.de
UPDATE bright comet in C3?

Only a small part of the object is visible in images 1024 * 1024
It is well visible in b/w 512 * 512 images from the LASCO website
It appears more or less stationary from 15:15 to 17:00 UTC
making it very unlikely that it is a comet

The same images show a bright arc of light at the upper left of the
occulter disk.

My rough measurements for beta Tau are
time x y (0,0) top left
1331 777,105 with no bright arc/reflection
1515 782,104
1545 783,104
1615 784,104
1645 785,104

showing that the spacecraft pointing seems to be ok

Mike wrote
>it looks like the occulator is off a bit from the
>Sun. My guess internal reflection.

I agree that it is a kind of internal reflection, but
I don't think that the Occulter disk has moved.
So, what has happened?

Rainer
Jun 18 2002 17:58:03 Rainer Kracht
R.Kracht@t-online.de
Comet in archival C2 images of 1997 Sep 29.


C2, 1024x1024, 0,0 upper left

22021300.fts 04:31 1012, 348
22021301.fts 04:50 992, 345
22021302.fts 05:12 966, 342
22021303.fts 05:31 943, 340
22021304.fts 05:53 915, 338
22021305.fts 06:12 889, 337
22021306.fts 06:34 858, 337

first image moderately bright, then fading
should be visible in C3 also
moving between the tracks of C/1999 M3 and C/2000 O3
but seems not to be related to them
as it moves faster and has a greater acceleration
no tail visible

Rainer
Jun 18 2002 20:09:30 Rob Matson
matsonr@saic.com
Dim archive comet in C2 on 2000-06-10 beginning at 19:54.

I believe this is distinct from SOHO-285 C/2000 L6 based
on an extrapolated perihelion at least 6 hours earlier
than that of SOHO-285. Images and locations (0,0 in
lower left) are:

Image Name Time X Y
------------ ----- --- ---
22069856.FTS 19:54 842, 21
22069857.FTS 20:06 842, 29
22069858.FTS 20:30 841, 44
22069863.FTS 21:08 840, 69
22069864.FTS 21:30 839, 83
22069865.FTS 21:54 837, 98
22069866.FTS 22:06 836, 106
22069867.FTS 22:30 834, 121 (noise superimposed)

It may be visible in the next two frames, but it is getting
quite dim and there's a fair amount of noise.

--Rob
Jun 18 2002 22:04:41 Rob Matson
matsonr@saic.com
I've searched through more archive images and found that C/2000 L6

does not begin until 2000-06-11 04:06 (22069887.fts) and is much brighter than the comet I reported, so my find is clearly a
different one, sandwiched between C/2000 L3 and L6 in time. --Rob
Jun 19 2002 01:29:48 Michael Oates
mike@ph.u-net.com
Rob,


[RE: Archive comet report 2000-06-10]
Sorry to have to say this, but also I think this is a comet.
I say sorry becuse I reported this one on Jan 13 2001.

See the past report pages for the entry...
http://sungrazer.nascom.nasa.gov/comets_found.old/comets_arch.html
and click on January 2001

There is also a list of X-Comets at...
http://www.ast.cam.ac.uk/~jds/xknos.htm

Michael Oates
Jun 19 2002 13:09:19 David Evans
dave.nokia3330@orange.net
Possible Kreutz in real time C2.


2002/06/19

1024x1024 0,0 lower left

14:06 953, 307
14:30 949, 317
15:06 945, 329
15:30 940, 339

Awaiting further images...

Regards,

Dave Evans
Jun 19 2002 14:18:18 Xavier Leprette
xavier.leprette@wanadoo.fr
Possible archive comet sungrazer in C2 images from 13 May 2001


The suspect object is faint, fuzzy, without tail.
It is visible at least in 10 consecutive images.

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

Images X Y time date
22093192.fts 447 19 02:41:20.277 13 may 2001
22093193.fts 450 26 02:50:00.673 13 may 2001
22093194.fts 454 31 02:58:44.768 13 may 2001
22093195.fts 457 36 03:05:05.465 13 may 2001
22093196.fts 461 44 03:15:07.160 13 may 2001
22093197.fts 462 47 03:20:05.557 13 may 2001
22093198.fts 466 54 03:30:05.452 13 may 2001
22093199.fts 468 57 03:35:05.449 13 may 2001
22093200.fts 472 65 03:45:07.144 13 may 2001
22093201.fts 475 68 03:50:05.941 13 may 2001

Xavier Leprette
Jun 19 2002 17:50:33 Rainer Kracht
R.Kracht@t-online.de
Comet in archival C2 images of 1997 Oct 19.


C2, 1024x1024, 0,0 upper left

22023494.fts 18:28 1010, 462
22023495.fts 18:56 1003, 428
22023496.fts 19:42 989, 370
22023497.fts 20:05 980, 343
22023498.fts 20:20 974, 324
22023499.fts 20:43 964, 297
22023500.fts 20:58 957, 279
22023501.fts 21:21 946, 253
22023502.fts 21:36 938, 236
22023503.fts 21:59 925, 211
22023504.fts 22:13 916, 195
22023505.fts 22:37 901, 171
22023506.fts 22:51 892, 157
22023507.fts 23:14 876, 134
22023508.fts 23:29 865, 121
22023509.fts 23:52 847, 100
and more images Oct 20

small to moderately bright
no tail visible
not related to any known comet group
or non-group comet

Rainer
Jun 19 2002 20:15:53 Alex Roca
ALEXROCARAMON@terra.es
Possible comet in real images C2 

1024 x 1024 (0,0) top left
it seems with tail

20020619 2130 973 821
20020619 2154 978 786
20020610 2206 978 775
20020619 2230 988 752



Regards
Alex Roca
Jun 20 2002 01:10:17 Maik Meyer
maik@comethunter.de
Re: Rainer's last archival non-Kreutz of 1997 10 19


Interestingly the orbit lies almost on the track for Meyer group
comets - but for Oct 1, not 19. There is a remote possibility
that it may be a "border member" of the group (although the
velocities seem a bit too high). If I find time until tonight
I'll try to get preliminary positions and an orbit.

Maik
Jun 20 2002 03:21:29 Maik Meyer
maik@comethunter.de
Re-2: Rainer's latest non-Kreutz 1997-10-19


I made a mistake. The apparent track is for a Meyer group comet
(taken the mean orbital elements of all members) with perihelion
at the end of October. So the difference is only 11 days. I have
checked the movement and have to say that I am quite confident that
it is the 22nd member of this group, perihelion around 20.1 Oct 1997
UT.

Maik
Jun 20 2002 10:51:07 Rainer Kracht
R.Kracht@t-online.de
Maik, I agree

it looks like a Meyer group comet
a bit off the standard track

Rainer
Jun 20 2002 11:28:29 Xavier Leprette
xavier.leprette@wanadoo.fr
 possible Kreutz comet in a real-time C2 images now.


The object is very faint and it is visible in 3 images.
on 2002/06/20 from 13:31 to 14:30 UT. May be it is only noise.

Positions measured from the top-left corner of a 1024x1024 frames :
col, row
13:31 840,988
13:54 842,978
14:30 844,956

Xavier Leprette
Jun 20 2002 11:44:32 Xavier Leprette
xavier.leprette@wanadoo.fr
Don't consider my previous report. Nothing in following images.


Xavier Leprette
Jun 20 2002 12:59:34 Xavier Leprette
xavier.leprette@wanadoo.fr
Possible archive comet sungrazer in C2 images from 18-19 May 2001


The suspect object is faint, rounded and condensed, without tail.
It is visible in 6 consecutive images.

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

Images X Y time date
22093797.fts 518 20 22:28:08.667 18 may 2001
22093798.fts 530 45 23:06:05.444 18 may 2001
22093799.fts 535 59 23:26:05.432 18 may 2001
22093800.fts 543 75 23:50:05.717 18 may 2001
22093801.fts 547 85 00:06:05.408 19 may 2001
22093802.fts 554 100 00:26:06.296 19 may 2001

Xavier Leprette
Jun 20 2002 13:01:34 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
20020620 1606 952 968
20020620 1630 948 952
20020620 1654 944 938

Regards, Rainer
Jun 20 2002 13:23:25 Xavier Leprette
xavier.leprette@wanadoo.fr
A possible Kreutz comet in a real-time C2 images now.


The object is very faint and it is visible in 3 consecutive images
on 2002/06/20 from 15:54 to 16:30 UT.

Positions soon

Xavier Leprette
Jun 20 2002 13:28:29 Xavier Leprette
xavier.leprette@wanadoo.fr
Possible Kreutz comet in a real-time C2 images now.

UPDATE : the same that Rainer ?

The object is very faint and it is visible in 3 consecutive images
on 2002/06/20 from 15:54 to 16:30 UT.

Positions measured from the top-left corner of a 1024x1024 frames :
col, row
15:54 964,975
16:06 953,968
16:30 948,954

Xavier Leprette
Jun 20 2002 13:39:07 Rainer Kracht
R.Kracht@t-online.de
UPDATE 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
20020620 1554 952 972
20020620 1606 952 968
20020620 1630 948 952
20020620 1654 944 938
20020620 1706 942 932
20020620 1730 938 916

not so faint Kreutz sungazer

Rainer
Jun 20 2002 18:46:02 Rainer Kracht
R.Kracht@t-online.de
Comet (Meyer 23) in archival C2 images of 1997 Oct 23.


C2, 1024x1024, 0,0 upper left

22022673.fts 00:34 1005, 111
22022674.fts 00:56 993, 91
22022675.fts 01:19 981, 71
22022676.fts 01:35 973, 58
22022677.fts 01:58 960, 39
22022678.fts 02:12 950, 26

small comet at the very edge of the FOV
visible in six imagws only

Rainer
Jun 20 2002 21:52:19 Derek Hammer
derek@sungrazer.nascom.nasa.gov
Since the last post, six new comets have been confirmed.

This brings the total to 470 with 1 pending.

The confirmed reports are:

Name Date
-------------------------
R. Kracht 97/09/29
X. Leprette 01/05/13
R. Kracht 97/10/19-20
X. Leprette 01/05/18-19
R. Kracht 02/06/20
R. Kracht 97/10/23

Derek
Jun 21 2002 11:02:49 Mark Ledingham
mark-le@online.no
A possible Kreutz comet in LASCO C2 real-time images.


The object is extremely faint. Lower bottom right. Additional
positions will follow.

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

2002/06/21 06:30 C2 (738, 814)
2002/06/21 06:54 C2 (736, 808)

* Coordinates mesured in 1024x1024 images, (0,0) is top-left corner.
Jun 21 2002 11:05:34 Mark Ledingham
mark-le@online.no
Sorry, I'm constantly forgetting my name

when I get excited :) about things! This
regards the last report made on Jun 21 2002
at 11:02:49.

- Mark Ledingham
Jun 21 2002 13:14:38 Mark Ledingham
mark-le@online.no
Update on my earlier report (11:02, 21 June):


Positions are difficult because of the object's
faintness, but this is what I believe are correct.

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

2002/06/21 06:30 C2 (737, 815)
2002/06/21 06:54 C2 (736, 809)
2002/06/21 07:31 C2 (735, 803)
2002/06/21 07:54 C2 (734, 798)

- Mark Ledingham
Jun 21 2002 20:02:34 mike boschat
aa063@chebucto.ns.ca
Possible comet in C2 images - 20020621_2206 UT

waiting further images to come in.

Mike B.
Jun 22 2002 11:26:47 Derek Hammer
derek@sungrazer.nascom.nasa.gov
Update:


D. Evans' comet of June 13th, 2002 has been confirmed.
It is designated for our purposes as SOHO462, and internationally
by the IAU as C/2002 L7.

This was Dave's first SOHO comet. Congratulations.


Derek
Jun 22 2002 12:09:02 Scarmato Toni
toniscarmato@libero.it
Possible comet in C3


512x512 0,0 top-left

20020622

starting at 1418 290,380


Toni Scarmato
Jun 22 2002 12:17:50 Scarmato Toni
toniscarmato@libero.it
I saw two object in C3


20020622 512x512 0,0 top-lft

First object

1342 289,381
1418 289,379
1442 289,378
1518 290,376


Second object

1342 270,349
1418 270,347
1442 270,346
1518 270,344


Regards,

Toni Scarmato

Jun 22 2002 15:46:20 Rob Matson
matsonr@saic.com
2002 June 22 - Possible bright comet in C2 real-time images

beginning at 18:30. 1024x1024 approx. coordinates (0,0 in
upper left):

YYYY-MM-DD HH:MM
----------------
2002-06-22 18:30 962, 968
18:54 962, 951

Awaiting further images to confirm. --Rob
Jun 22 2002 16:18:04 Rob Matson
matsonr@saic.com
UPDATE 2002 June 22 - Possible bright comet in C2 real-time

images. Trend continues, though it seems very condensed
for a comet this bright and could thus be a surprising
coincidence of cosmic ray hits moving in the correct
direction at the right location and velocity. 1024x1024
approx. coordinates (0,0 in upper left):

YYYY-MM-DD HH:MM
----------------
2002-06-22 18:30 962, 968
18:54 962, 952
19:31 962, 929

Will see if it persists at 19:54. --Rob
Jun 22 2002 16:46:28 Rob Matson
matsonr@saic.com
"Object" in C2 is gone at 19:54, so it must have been another

cruel noise sequence. --Rob
Jun 23 2002 14:12:09 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
20020623 1754
20020623 1806
bottom right

Rainer
Jun 23 2002 14:16:11 Xavier Leprette
xavier.leprette@wanadoo.fr
Possible sungrazer comet in a real-time C2 B/W images of 2002/06/23


It is visible from 17/54 till 18:06 UT in 2 consecutive images
The suspect object is moving towards the sun.

Approximate positions measured from the top-left corner of 512x512 frames :

col, row
17:54 UT 494,477
18:06 UT 492,472

I'm waiting others images to confirm.

Xavier Leprette
Jun 23 2002 14:16:19 Rainer Kracht
R.Kracht@t-online.de
UPDATE 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
20020623 1754 986,954
20020623 1806 984,944

Rainer
Jun 23 2002 14:36:28 Xavier Leprette
xavier.leprette@wanadoo.fr

Possible sungrazer comet in a real-time C2 B/W images of 2002/06/23

UPDATE : I can confirm my previous report.

It is visible from 17/54 till 18:30 UT in 3 consecutive images
The suspect object is moving towards the sun.

Approximate positions measured from the top-left corner of 512x512 frames :

col, row
17:54 UT 494,477
18:06 UT 492,472
18:30 UT 489,466

Rainer, I'm thinking that it is not correct to send a report without positions.
With this method it is easy to win each time. Calculate positions takes at least
3 or 4 minutes. I would like to have Doug's opinion about that!

Xavier Leprette
Jun 23 2002 14:37:45 Rainer Kracht
R.Kracht@t-online.de
UPDATE (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
20020623 1754 986,954
20020623 1806 984,944
20020623 1830 978,930

it's real (a small Kreutz sungrazer)

Rainer
Jun 23 2002 14:51:07 Rainer Kracht
R.Kracht@t-online.de
Xavier: I omitted the positions in my first post

because the suspect was obvious to me
(and I think for others also).
Doug will decide.

Rainer

Jun 23 2002 15:01:22 Rainer Kracht
R.Kracht@t-online.de
there seems to be a second comet behind

the first, which appeared 17:54

1854 first 974,918
second 976,924

Rainer
Jun 23 2002 15:06:29 Rainer Kracht
R.Kracht@t-online.de
UPDATE possible second 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
20020623 1806 988,952
20020623 1830 982,937
20020623 1854 976,952

Rainer
Jun 23 2002 15:45:22 Rainer Kracht
R.Kracht@t-online.de
UPDATE possible second 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
20020623 1754 990,958
20020623 1806 988,952
20020623 1830 982,938 from 1024*1024
20020623 1854 977,925 from 1024*1024

it is also visible in 1024*1024
as a faint, diffuse cloud

Rainer
Jun 23 2002 16:55:36 mike boschat
aa063@chebucto.ns.ca
I can confirm Rainer's 2 comets in C2 for today.


Mike B.
Jun 23 2002 22:41:58 Rob Matson
matsonr@saic.com
2002 June 24 - Possible very diffuse comet w/tail in C2 real-time

images beginning at 00:30. 1024x1024 approx. coordinates of "head"
(0,0 in upper left):

YYYY-MM-DD HH:MM
----------------
2002-06-24 00:30 1008, 883
00:54 1004, 868
01:31 998, 842

Awaiting further images to confirm. --Rob
Jun 23 2002 22:54:03 Rob Matson
matsonr@saic.com
Update to my last post on 6/24 C2 candidate:  if real, the

comet has faded to the background noise level by the time
of the 01:54 frame, so confirmation is probably not possible.
Perhaps more detail is evident in the FITS images? -Rob
Jun 24 2002 08:02:59 anthony sauter
anthony.sauter@tamedia.ch
Point   X  Y   YYYYMMDD HHMM  Julmins Height(km)

0 978 236 20020621 1306 3927666 1034198

2002/06/21 13:06


please have a look and send me (if possible) a answer.

Greetings from Switzerland

Anthony
Jun 24 2002 08:05:56 anthony sauter
anthony.sauter@tamedia.ch
found a strange line on the c3 cam. looks like a damn fast comet


Point X Y YYYYMMDD HHMM Julmins Height(km)
0 83 101 20020619 0706 3924426 1113033
1 80 115 20020619 0706 3924426 1098853

19.6.2002 07:06
greez from switzerland

anthony
Jun 24 2002 20:58:29 Dwight Hanson
djhanson@hotpop.com
Possible comet in real-time C2:


24-Jun-2002, 1024x1024, (x=0,y=0) upper-left

23:06 - (983,942)==>24-Jun
23:30 - (972,927)
23:54 - (960,912)
00:06 - (954,906)==>25-Jun

Object is faint and diffuse.

--DJ Hanson
Jun 25 2002 01:15:22 Mark Ledingham
mark-le@online.no
A possible Kreutz comet in LASCO C2 real-time images.


Lower bottom right. Faint object. Just coming in at the
image border at 01:31. I'll try and confirm the fourth
position as soon as this comes in.

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

2002/06/25 01:31 C2 (910, 1011)
2002/06/25 01:54 C2 (905, 1000)
2002/06/25 02:06 C2 (900, 990)

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

- Mark Ledingham
Jun 25 2002 05:22:23 Anthony Sauter
anthony.sauter@tamedia.ch
Possible comet on Lasco C2


C2 Image Size = 1024x1024 (jpg.)

Point X Y YYYYMMDD HHMM Julmins Height(km)
0 746 69 20020624 2230 3932550 4288987
1 752 71 20020624 2306 3932586 4298833
2 758 71 20020624 2330 3932610 4324314
3 762 71 20020624 2354 3932634 4341561
4 765 72 20020625 0006 3932646 4347198

Waiting for more pics to get it more clear.

Greetings

Anthony
Jun 25 2002 10:38:28 Mark Ledingham
mark-le@online.no
UPDATE to my report on a possible Kreutz comet,

as reported at 01:15 on 25 June. This object has
continued on its path. Please note that positions
can vary by perhaps 1-2 pixels.

Description:
Lower bottom right. Faint and diffuse object, but
clearly on the move toward the sun.

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

2002/06/25 01:31 C2 (910, 1011)
2002/06/25 01:54 C2 (905, 1000)
2002/06/25 02:06 C2 (900, 990)
2002/06/25 02:06 C2 (895, 983)


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

- Mark Ledingham
Jun 26 2002 11:03:56 Isaac Green
igreen@cs.rochester.edu
Possible come in LASCO C2, 0,0 top-left, 1024x1024


image x y
20020625_2206 693 1017
20020625_2230 694 1006
20020625_2330 696 976
20020625_2354 697, 965
20020626_0006 699, 957

I've spent a few months here trying to learn the ropes before
posting. The last two points are a little iffy, so I am ready
for some criticism, but this object looks so much like other
reports I looked up, I just had to post.

Thanks,

Isaac


Jun 27 2002 05:21:41 Scarmato Toni
toniscarmato@libero.it
Possible comet in c3


20020627 512x512 0,0 top-left

0742 311,394
0818 311,392
0842 311,391


I am waiting other images to confirm


Toni Scarmato
Jun 27 2002 08:48:14 Scarmato Toni
toniscarmato@libero.it
Not consider my last report


Nothing visible at 0918

Toni Scarmato
Jun 27 2002 09:53:04 Xavier Leprette
xavier.leprette@wanadoo.fr
A possible Kreutz comet in a real-time C2 images now.


The object is faint and it is visible in 4 consecutive images
on 2002/06/27 from 01:54 to 02:54 UT.

Positions measured from the top-left corner of a 1024x1024 frames :
col, row
01:54 962,934

Xavier Leprette
Jun 27 2002 09:58:39 Xavier Leprette
xavier.leprette@wanadoo.fr
A possible Kreutz comet in a real-time C2 images now.

UPDATE :

The object is faint and it is visible in 4 consecutive images
on 2002/06/27 from 01:54 to 02:54 UT.

Positions measured from the top-left corner of a 1024x1024 frames :
col, row
01:54 962,934
02:06 960,926
02:30 954,911
02:54 948,895

Xavier Leprette
Jun 27 2002 10:14:23 Maik Meyer
maik@comethunter.de
Congrats Xavier, I can confirm this one... I was too late.


Maik
Jun 27 2002 10:19:50 Xavier Leprette
xavier.leprette@wanadoo.fr
About my 2 previous reports :

I can confirm the comet which is visible now in C2 in 8
consecutive images on 2002/06/27 from 01:54 to 04:06. It is
fainting quickly.

Xavier Leprette
Jun 27 2002 14:11:49 mike boschat
aa063@chebucto.ns.ca
What is this in C3 images at 20020627_1518 UT?


A star or "noise"? Object is at the top near
11 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
--------------------------------------------
20020627_1518.gif 512 x 512 138, 31
20020627_1542.gif 512 x 512 139, 29
20020627_1618.gif 512 x 512 136, 30
20020627_1642.gif 512 x 512 136, 30 - image strip stuck

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

Jun 27 2002 15:23:52 mike boschat
aa063@chebucto.ns.ca
Disregard post of Jun 27 2002 14:11:49

looks like it was "noise".

MB
Jun 27 2002 21:07:19 Tony Hoffman
tonyhoffman@earthlink.net
Possible comet in C2 realtime images


b/w, 512 x 512, 0,0 in upper left

June 28
0006 506, 464
0030 503, 458
0054 500, 451

--Tony
Jun 27 2002 21:07:26 Rob Matson
matsonr@saic.com
2002 June 27/28 - Possible comet in LASCO C2 real-time images

beginning at 23:54. 512x512 B&W approx. coordinates
(0,50 in upper left):

YYYY-MM-DD HH:MM Col Row
---------------- --- ---
2002-06-27 23:54 508 517
2002-06-28 00:06 506 514
00:30 503 507
00:54 500 500

Awaiting further images to confirm. --Rob
Jun 27 2002 21:11:04 Rob Matson
matsonr@saic.com
Wow, Tony, -- 7 seconds apart posting!  Do we get dual credit? ;-)

I would have posted earlier, but wanted to wait for that 4th image since it's pretty dim in the C2 B&W images. --Rob
Jun 27 2002 21:16:37 Tony Hoffman
tonyhoffman@earthlink.net
Dual credit would be fine with me, Rob (assuming it's real!); let's see what Doug says.


--Tony
Jun 27 2002 21:40:33 Rob Matson
matsonr@saic.com
Update comet in realtime C2.  Comet is real.  Has shown

up at expected position in the 01:31 frame. For my
coordinate system (512x512, 0,50 in upper left):

2002-06-28 01:31 495 489

--Rob
Jun 27 2002 21:42:11 Hoffman Tony
tonyhoffman@earthlink.net
Well, it shows up at 0131 in the b/w image at 495, 440, so it looks like it's real.


--Tony
Jun 27 2002 23:33:11 Carl Hamann
warbler8@hotmail.com
Possible comet in LASCO C3 color 512X512 real-time 

camera images beginning 12:18

Date HR/MN Col Row
---------- ----- --- ---
2002/06/27 12:18 208 226
2002/06/27 12:42 183 196
2002/06/27 13:42 149 154

Jun 28 2002 13:13:40 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
20020628 1554 970 966
20020628 1606 964 958
20020628 1630 948 942
20020628 1654 936 928

Rainer
Jun 28 2002 16:18:56 Rainer Kracht
R.Kracht@t-online.de
UPDATE 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
20020628 1554 970 966
20020628 1606 964 958
20020628 1630 948 942
20020628 1654 936 928

this is not very convincing in 1024 *1024
and is probably noise

Rainer
Jun 28 2002 17:23:02 Rob Matson
matsonr@saic.com
2002 June 28 - Comet in LASCO C2 real-time images

beginning at 20:30. 1024x1024 coordinates

YYYY-MM-DD HH:MM Col Row
---------------- --- ---
2002-06-28 20:30 1017 890

More to come. ---Rob
Jun 28 2002 17:29:17 Rob Matson
matsonr@saic.com
Update 2002 June 28 - Bright comet in LASCO C2 real-time images

1024x1024 coordinates for first two images:

YYYY-MM-DD HH:MM Col Row
---------------- --- ---
2002-06-28 20:30 1017 890
21:08 1006 866 (expanded from 512x512 B&W)

--Rob
Jun 28 2002 18:15:46 Rob Matson
matsonr@saic.com
Update 2002 June 28 - Bright comet in LASCO C2 real-time images.

1024x1024 coordinates for first 4 images. Is that a secondary
fragment trailing right behind it? Coordinates for second dim
follower supplied for 21:08 and 21:30 frames:

YYYY-MM-DD HH:MM Col Row
---------------- --- ---
2002-06-28 20:06 1021 884
20:30 1017 890
21:08 1005 866 1011 875
21:30 998 852 1004 863

--Rob
Jun 28 2002 19:29:02 Rob Matson
matsonr@saic.com
Final update on June 28 bright comet & trailing fragment in

LASCO C2 real-time images:

YYYY-MM-DD HH:MM Col Row 2nd frag.
---------------- --- --- ---- ---
2002-06-28 20:06 1021 884 --- ---
20:30 1017 890 --- ---
21:08 1005 866 1011 875
21:30 998 852 1004 863
21:54 990 837 995 847
22:06 985 829 990 840
22:30 977 814 982 824

It occurs to me that this might have been bright enough to
appear in C3. Has anyone checked? --Rob
Jun 28 2002 23:42:19 Sebastian Hoenig
Sebastian@sungrazer.org
Congratulations Rob.


Concerning your 2 comets: Those two you indicated are clearly
seperated so it really might be confirmed as two distinct comets.
However: Even the first (bright) one seems to have two seperate
condensations (the second one leaping +2,-4 behind the main
condensation). But I guess there's not enough evidence for it.

Regards, Sebastian
Jun 29 2002 03:05:25 David Evans
dave.nokia3330@orange.net
A possible 'companion' Kreutz comet to Rob's latest find in real-time C2


29/06/2002 1024x1024 0,0 Bottom Left

The object is very faint and may require contrast enhancement to view...

Figures in brackets show the off-set in X, Y to Rob's comet.


21:30 976, 140 (-23, -25)
21:54 968, 152 (-23, -27)
22:06 963, 161 (-24, -26)
22:30 953, 178 (-25, -25)


- Dave
Jun 29 2002 03:07:59 David Evans
dave.nokia3330@orange.net
Sorry, date of last posting should read 2002/06/28


- Dave
Jun 30 2002 09:39:06 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
20020630 1254 992 844
20020630 1331 974 826

Rainer
Jun 30 2002 10:03:02 Rainer Kracht
R.Kracht@t-online.de
UPDATE 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
20020630 1254 992 844
20020630 1331 974 826
20020630 1354 not visible
sorry, that was noise
(and too slow for a Kreutz group comet)

Rainer
Jun 30 2002 12:24:26 mike boschat
aa063@chebucto.ns.ca
Interesting object in the C3 1418 UT image

at upper right. A refection? or piece of
spacecraft dust?

Would have been a nice looking comet :)

MB