SOHO-LASCO Comet Reports for 200110

Oct 01 2001 23:06:26 michael boschat
aa063@chebucto.ns.ca
Possible sungrazer in C3 images - 20011002_0018 UT


Possible noise? Below 2nd "bad data image"
on right side.

****** 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
--------------------------------------------
20011002_0018.gif 512 x 512 374, 312
20011002_0042.gif 512 x 512 373, 312
20011002_0143.gif 512 x 512 369, 310
20011002_0242.gif 512 x 512 366, 308
----------------
Michael Boschat

Oct 03 2001 11:41:43 Scarmato Toni
toniscarmato@libero.it
Possible comet in C3 real-time images.



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


2001/10/03 09:18 (380,442)
2001/10/03 09:42 (380,441)
2001/10/03 10:20 (379,439)
2001/10/03 10:42 (378,438)


Comment: object moving toward the sun on an apparent
Kreutz orbit, diffuse in last two images.


I am waiting other images to confirm.


Regards,

Toni Scarmato
Oct 03 2001 18:50:20 michael boschat
aa063@chebucto.ns.ca
Possible sungrazer in C3 images - 20011002_1945 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
--------------------------------------------
20011002_1945.gif 512 x 512 356, 291
20011002_2018.gif 512 x 512 352, 287
20011002_2042.gif 512 x 512 349, 283
20011002_2118.gif 512 x 512 343, 279

----------------
Michael Boschat
Oct 04 2001 09:05:01 michael boschat
aa063@chebucto.ns.ca
Disregard my last 2 postings, could

not see object on further images.

Mike Boschat
Oct 09 2001 12:15:55 Xavier Leprette
xavier.leprette@education.gouv.fr
A possible not Kreutz comet in a real-time C2 images now.


The object is faint, small, without tail and it is visible in 7 consecutive images
on 2001/10/09 from 02:30 to 04:30 UT in top right corner.
The object is moving towards the sun.

Approximate positions measured from the top-left corner
of a 1024x1024 frames :

col, row
02:54 UT 492,53

Other positions soon.

Xavier Leprette
Oct 09 2001 12:29:35 Xavier Leprette
xavier.leprette@education.gouv.fr
A possible not Kreutz comet in a real-time C2 images now.

UPDATE :

The object is faint, small, without tail and it is visible in 7 consecutive images
on 2001/10/09 from 02:30 to 04:30 UT in top right corner.
The object is crossing in diagonale away the sun
(not toward the sun).

Approximate positions measured from the top-left corner
of a 1024x1024 frames :

col, row
02:30 UT 502,64
02:54 UT 492,53
03:06 UT 488,47
03:30 UT 477,37
03:54 UT 466,26
04:06 UT 461,20
04:30 UT 449,11

Xavier Leprette
Oct 09 2001 12:46:04 Xavier Leprette
xavier.leprette@education.gouv.fr
A possible not Kreutz comet in a real-time C2 images now.

NEW UPDATE : I'm sorry I have used 512x512 frames (not 1024)

The object is faint, small, without tail and it is visible in 7 consecutive images
on 2001/10/09 from 02:30 to 04:30 UT in top right corner.
The object is crossing in diagonale away the sun.

Approximate positions measured from the top-left corner
of a 512x512 frames :
col, row
02:30 UT 502,64
02:54 UT 492,53
03:06 UT 488,47
03:30 UT 477,37
03:54 UT 466,26
04:06 UT 461,20
04:30 UT 449,11

Xavier Leprette
Oct 09 2001 16:33:07 Michael Oates
mike@ph.u-net.com
I can confirm Xavier Leprette's non-Kreutz comet.

It has a very similar path to two of my finds but
they were in the top left corner (SOHO-103 & 298)
It also has the same appearance. Nice find.

Regards
Michael Oates
Oct 10 2001 01:41:24 XingMing Zhou
zh_x_m@163.net
What's this? fast move!with a short tail. 

0,0 in upper left corner

Images Size X, Y

20011009_0806_c2.gif 512 x 512 355, 243
20011009_0830_c2.gif 512 x 512 402, 226
20011009_0854_c2.gif 512 x 512 446, 212
20011009_0906_c2.gif 512 x 512 467, 206
20011009_0930_c2.gif 512 x 512 508, 194

XingMing Zhou
Oct 10 2001 04:05:30 Alexander Mimeev
alexpm@imail.ru
0830 x/y=2,76

0854 x/y=2,93
0906 x/y=3,02
0930 x/y=3,12

What's this? possible,plasmoid.

Alexander

Oct 10 2001 04:28:58 Xavier Leprette
xavier.leprette@education.gouv.fr
I think that it is also a not-Kreutz comet that XingMing Zhou has found.

It is bright and easily visible. Congratulation XingMing.

Xavier Leprette
Oct 10 2001 05:24:34 Xavier Leprette
xavier.leprette@education.gouv.fr
The non-Kreuz XingMing Zhou comet is also visible in C3 images

from 9:18 to 12:18 (2001/10/09)
Positions measured from the top-left corner of a 1024x1024 frames :
col, row
09:18 UT 616,466
09:42 UT 663,460
10:20 UT 659,451

Xavier
Oct 10 2001 05:26:03 Michael Oates
mike@ph.u-net.com
Sorry guys, I am going to stick my neck out here and say that

I think that this is part of a CME and not a comet.

It is moving far too fast for a comet, and it has about the
same velocity as the rest of the CME. Also the first image 08:06
in is very bright just at the edge of the occulting disk, and
then gets fainter as it moves out, quite the opposite of a comet.
We have never seen a comet with such an apparent brighness so
close to the occulting disk.

Regards

Mike
Oct 10 2001 06:00:50 XingMing Zhou
zh_x_m@163.net
Xavier and Mike,thanks! I approve Mike's view. 
Oct 10 2001 06:05:59 Leprette Xavier
xavier.leprette@education.gouv.fr
Mike,

I'd rather agree with you, the object seems going to fast to be a comet.
So I was mistaken in thinking it was a comet (I should have checked
on 1024 images). I'm looking forward to reading Doug's opinion about it.

Xavier
Oct 10 2001 08:53:37 michael boschat
aa063@chebucto.ns.ca
Re: the object.


Mike O says it gets fainter moving
away and not typical of a comet.

Is this not the actual case in comets:
1) approaching the Sun get brighter.
2) moving away get fainter? ( unless there is an outburst ).

I also note, doing a "manual" loop
with the arrow keys on my computer
( like a blink comparitor ) that the "object" does
move in same velocity as CME and note
the bright "knot" piece near the 4 pm
area, doing the manual loop it and the
"object" move at same speed.

And finally, there was a similar occurance
last year (?) with a piece that was bright and had
a tail, it was coming off the bottom part of the
C2 image looked like a comet and went into the C3
images also. Anyone remember that?

Mike B.

Oct 11 2001 05:00:53 XingMing Zhou
zh_x_m@163.net
Mike B., Yes, I still remember. But the goal that time is relatively great and disperse, also spread constantly while moving. This object is very small, not fuzzy now. Really inconceivable!


XingMing Zhou
Oct 11 2001 05:52:10 Scarmato Toni
toniscarmato@libero.it
Possible comet in C3 real-time b/w images.


Approximate positions 512x512 (0,0) top-left corner


2001/10/11 06:42 (336,420)
2001/10/11 07:42 (335,416)
2001/10/11 08:42 (335,412)
2001/10/11 09:18 (335,410) brigth

Comment: object moving on an apprent Kreutz orbit
toward the sun, brigth on last image.

I am waiting other images to confirm



Regards,

Toni Scarmato
Oct 11 2001 06:21:05 Sebastian Hoenig
Sebastian@sungrazer.org
No object visible at Toni's positions.


Regards, Sebastian
Oct 11 2001 06:52:01 XingMing Zhou
zh_x_m@163.net
From since the 20011010_1118, Mercury has entered the C3.
Oct 11 2001 11:22:38 Doug Biesecker
doug@sungrazer.nascom.nasa.gov

Just a word of warning. From now until sometime Saturday, you
may at times have difficulty accessing real-time data or certain
web pages. Real-time movies may also not be properly updated.
It's only some standard maintenance.

Doug
Oct 12 2001 13:23:39 Rainer Kracht
R.Kracht@t-online.de
cometary image (possible comet)

in real-time C2 images from Lasco-Homepage

images enlarged to 1024*1024
(0,0) in upper left corner

2001 October 12

1630 949,1008
1654 927,987
1706 916,977

Rainer Kracht
Oct 12 2001 13:24:21 Sebastian Hoenig
Sebastian@sungrazer.org
Comet in LASCO C2 images, today 17:06UT. Right corner


More on this soon.

Sebastian Hoenig
Oct 12 2001 13:31:56 Sebastian Hoenig
Sebastian@sungrazer.org
Well, Rainer was 42 minutes earlier. That's life...


Congratulations Rainer!

Regards, Sebastian
Oct 12 2001 13:32:33 Sebastian Hoenig
Sebastian@sungrazer.org
Re:


Of course not minutes but 42 seconds.

Regards, Sebastian
Oct 12 2001 13:43:55 Rainer Kracht
R.Kracht@t-online.de
UPDATE

time x,y
1730 895,956
seems to be a kreutz comet

Rainer Kracht
Oct 12 2001 14:38:12 Sebastian Hoenig
Sebastian@sungrazer.org
Possible new comet in LASCO C3 b/w images, starting 20010112_1718


Date: Oct 12, 2001

Description:
fuzzy object moving on a Kreutz orbit

Positions: (0,0) upper left, 512x512

Time (x,y)

17:18 301,292
17:42 299,290
18:18 296,283

More on this soon.

Sebastian Hoenig
Oct 12 2001 15:30:10 Derek Hammer
derek@ra.nascom.nasa.gov
Hello all,

I have looked at the recent claims and I do confirm the
reports of a non-Kreutz by Xavier on 10/9/01, and today's comet
by Rainer (positions will follow).

I have looked at XingMing's report and agree that the
object is associated with the CME based on velocity and
brightness changes, although it is very rare that a structure
this dense and compact exists in the tenuous corona.

Here is a tentative list of the recent SOHO comets....

SOHO# Date Discoverer Designation IAUC

350 09/11/01 D. Johnson C/2001 R5 7718
351 01/21/96 X. Leprette C/1996 B4 7726
352 01/29/96 X. Leprette C/1996 B5 7730
353 09/28/01 M. Oates C/2001 S2 7730
354 09/14/96 M. Oates C/1996 R4 7730
355 10/09/01 X. Leprette ---- ----
356 10/12/01 R. Kracht ---- ----

Please email me with any questions/concerns about this list.
Finally, here are rough positions for today's comet.......


#COMMENT: SOHO 356
# HEIGHT DATE TIME ANGLE TEL FC COL ROW
18.36 2001/10/12 03:18:05 226.6 C3 10 751.0 310.0
18.12 2001/10/12 03:42:05 226.3 C3 10 747.0 312.0
17.62 2001/10/12 04:18:05 226.1 C3 10 740.0 317.0
17.42 2001/10/12 04:42:05 226.0 C3 10 737.0 319.0
16.97 2001/10/12 05:18:05 225.9 C3 10 731.0 324.0
16.68 2001/10/12 05:42:06 225.8 C3 10 727.0 327.0
16.23 2001/10/12 06:18:05 225.6 C3 10 721.0 332.0
15.90 2001/10/12 06:42:05 225.6 C3 10 717.0 336.0
15.13 2001/10/12 07:42:05 225.5 C3 10 707.0 345.0
14.68 2001/10/12 08:18:05 225.4 C3 10 701.0 350.0
14.36 2001/10/12 08:42:05 225.4 C3 10 697.0 354.0
13.91 2001/10/12 09:18:05 225.2 C3 10 691.0 359.0
13.62 2001/10/12 09:42:05 225.1 C3 10 687.0 362.0
13.06 2001/10/12 10:20:06 225.1 C3 10 680.0 369.0
12.81 2001/10/12 10:42:05 225.1 C3 10 677.0 372.0
12.28 2001/10/12 11:18:05 224.9 C3 10 670.0 378.0
7.92 2001/10/12 16:30:05 221.8 C2 10 950.0 16.0
7.58 2001/10/12 16:54:05 221.6 C2 10 929.0 36.0
7.41 2001/10/12 17:06:06 221.3 C2 10 917.0 45.0
7.05 2001/10/12 17:30:06 221.2 C2 10 896.0 67.0
6.69 2001/10/12 17:54:05 220.9 C2 10 874.0 88.0



Derek
Oct 13 2001 09:25:49 Scarmato Toni
toniscarmato@libero.it
Possible comet in C3 b/w real-time images.


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

2001/10/13 11:42 (247,446)
2001/10/13 12:18 (248,444)
2001/10/13 12:42 (248,443)


Comment:

Object moving toward the sun on an apparent
Kreutz orbit, but with a brigthness that change.
I am waiting other images to confirm


Regrads,

Toni Scarmato
Oct 13 2001 10:41:04 Sebastian Hoenig
Sebastian@sungrazer.org
Regarding the last reports:


At first mine of yesterday: I followed Derek's positions of Rainer's
find and what I reported obviously is the same comet visible
at the same time in C2 and C3.

At last Toni's: I have the same images and also some previous and
I could not see any cometary object.

Regards, Sebastian
Oct 15 2001 10:38:12 Rainer Kracht
R.Kracht@t-online.de
possible comet in C2 images 512*512

2001 October 15
enlarged to 1024*1024
0,0 in upperleft corner

12:50 927,1017
13:27 894,986
13:50 872,965

Regards, Rainer
Oct 15 2001 10:58:07 Rainer Kracht
R.Krachr@t-online.de
UPDATE

comet in C2 images 512*512
2001 October 15
enlarged to 1024*1024
0,0 in upperleft corner

time x,y
12:50 927,1016
13:27 894,985
13:50 874,965
14:06 858,951
14:26 841,933

Regards, Rainer
Oct 15 2001 11:23:22 Jim Danaher
danaher@sprynet.com
There is an object in C3 at the positions below:

2001
10/14 2318 x=320 y=291
10/14 2342 x=321 y=291
10/15 0018 x=323 y=291
10/15 0218 x=328 y=291
10/15 0342 x=333 y=290
10/15 0442 x=336 y=290
10/15 0618 x=339 y=290
(based on 512x512, upper left 0,0)
Jim Danaher
danaher@sprynet.com
Oct 15 2001 11:36:19 Xavier Leprette
xavier.leprette@education.gouv.fr
Hi all,

Where do you find your real time images now. My URL are stopped
since 2001/10/09 19:54 (C2) and 20:18 (C3).
Thanks

Xavier Leprette
Oct 15 2001 11:57:17 Rainer Kracht
R.Kracht@t-online.de
They are from the Lasco Homepage at:

http://lasco-www.nrl.navy.mil/lasco.html#rt
and
http://lasco-www.nrl.navy.mil/realtime.html

Regards, Rainer
Oct 15 2001 14:11:05 Sebastian Hoenig
Sebastian@sungrazer.org
A quick note on the recent reports:


Rainer's object looks good regarding the positions. I can't
confirm it but that's only due to the lack of images I have.

Jim: Your object is Mercury.

Regards, Sebastian
Oct 15 2001 16:11:45 Doug Biesecker
doug@sungrazer.nascom.nasa.gov

Hi all,
It looks like R. Kracht's find for October 15th is probably
a good find. We're still waiting for more data to roll in here.

We're working on restoring access to real-time movies. It's
likely that you'll have access to them directly from the SOHO
website http://sohowww.nascom.nasa.gov. There was a major
security issue, hence the lack of access to data. We
don't know how long this will take to get cleared up.

Doug
Oct 16 2001 11:51:39 CHEN DongHua
cdh_email@163.net
Posible comet in 4 consecuitive realtime c2  images                                         


Positions 1024x1024 (0,0) top-left corner:

2001/10/15 1250 925 1016
2001/10/15 1327 892 984
2001/10/15 1350 873 965
2001/10/15 1406 857 950


Chen Dong Hua

Oct 16 2001 11:59:03 Sebastian Hoenig
Sebastian@sungrazer.org
Chen,


that's the comet Rainer reported yesterday.

Regrds, Sebastian
Oct 16 2001 12:07:50 CHEN Donghua
cdh-email@163.net
Sebastian, many thanks!


Regards, Donghua CHEN
Oct 16 2001 13:06:45 Xavier Leprette
xavier.leprette@education.gouv.fr
A possible sungrazing comet in a real-time C2 images now.


The object is faint, small, with a short tail and it is visible in 3 consecutive images
on 2001/10/16 from 13:27 to 14:06 UT in bottom right quadrant on the right of the logo.
The object is moving toward the sun.

Xavier Leprette
Oct 16 2001 13:16:59 Xavier Leprette
xavier.leprette@education.gouv.fr
A possible sungrazer comet in a real-time C2 images now.

UPDATE :
The object is faint, small, with a short tail and it is visible in 3 consecutive images
on 2001/10/16 from 13:27 to 14:06 UT in bottom right quadrant
on the right of the logo. The object is moving toward the sun.

Approximate positions measured from the top-left corner
of a 1024x1024 frames :
col, row
13:27 UT 880,958
13:50 UT 860,939
14:06 UT 845,924

Xavier Leprette
Oct 16 2001 13:21:11 michael boschat
aa063@chebucto.ns.ca
I can confirm Xavier's comet

in C2.

Mike Boschat
Oct 16 2001 20:07:20 Doug Biesecker
doug@sungrazer.nascom.nasa.gov

Yes, I agree that Xavier has found yet another one. Good going.
I believe that takes our tally to 358. That's the one in C2 on
October 16th. Still have to check the C3 data for this one and
for the October 15th comet.

If you think I've been quiet lately, it's about to get worse. You're
unlikely to hear from me before Oct 25. I'm busy with work, but
unfortunately, it's not the sort where I'm doing any science.

Doug
Oct 17 2001 00:29:53 Chen Donghua
cdh_email@163.net
Possible comet in C2 images 2001/10/16 starting from 12:26.

Coordinates in next post.

Donghua Chen
Oct 17 2001 00:43:50 Chen Donghua
cdh_email@163.net
Hi all,

Sorry, Xavier's comet.

Regards, Donghua Chen
Oct 17 2001 01:55:11 XingMing Zhou
zh_x_m@163.net
A non-Kreutz comet in real-time c3 images.

with a short tail.
0,0 in upper left corner.

Images Size X, Y
----------------------------------------------
...
20011014_2218_c3.gif 512 x 512 340, 131
...

20011015_0042_c3.gif 512 x 512 343, 143
...
20011015_0442_c3.gif 512 x 512 345, 162
20011015_0542_c3.gif 512 x 512 346, 168
20011015_0642_c3.gif 512 x 512 346, 174
20011015_0742_c3.gif 512 x 512 346, 180
20011015_0818_c3.gif 512 x 512 346, 184
20011015_0842_c3.gif 512 x 512 346, 187

XingMing Zhou
Oct 17 2001 02:46:44 Sebastian Hoenig
Sebastian@sungrazer.org
Confirmation Xingming's find. That is a VERY nice one remembering

me a bit of SOHO-46 - not that bright but shape, speed and
apparent distance from the sun.

Regards, Sebastian
Oct 17 2001 04:28:23 Sebastian Hoenig
Sebastian@sungrazer.org
New sungrazer in LAsco C3 images 7:42, 8:18 today.


Positions next post

Sebastian Hoenig
Oct 17 2001 04:32:01 Sebastian Hoenig
Sebastian@sungrazer.org
TWO!! New sungrazer in LASCO C3 images 7:42, 8:18 today.


Positions: 1024x1024, 0,0 upper left

1st:

7:42 672,650
8:18 666,645

2nd:

7:42 760,742
8:18 755,737

More soon.

Sebastian Hoenig
Oct 17 2001 04:42:24 Sebastian Hoenig
Sebastian@sungrazer.org
Two new sungrazers in LASCO C3 images, starting 20011017_7:42_c3

(Update and correct form)

Date: Oct 17, 2001

Description:
2nd one significantly brighter, both show a short tail,
both Kreutz comets

Positions: 1024x1024, 0,0 upper left

Time (x,y)

07:42 672,650 1st comet
08:18 666,645 1st comet

07:42 760,742 2nd comet
08:18 755,737 2nd comet

More not before 11 UT (but I think they will be confirmed till
then).

Sebastian Hoenig
Oct 17 2001 05:12:42 XingMing Zhou
zh_x_m@163.net
Possible comet in C3 imgaes.

bright
(0,0) in upper-left corner.

Images Size X, Y
---------------------------------------------
20011017_0742_c3.gif 512 x 512 336, 327
20011017_0818_c3.gif 512 x 512 333, 323
20011017_0842_c3.gif 512 x 512 331, 321

XingMing Zhou
Oct 17 2001 05:17:18 Scarmato Toni
toniscarmato@libero.it
Possible brigth comet in C3 b/w at


2001/10/17 07:42 (378,372)

Other positions at next e-mail

Toni Scarmato
Oct 17 2001 05:24:40 Scarmato Toni
toniscarmato@libero.it
Update comet in C3 and posible new comet


512x512 (0,0) top-left corner

2001/10/17 07:42 (378,372)
2001/10/17 08:18 (377,371)
2001/10/17 08:42 (376,368)

second object

2001/10/17 07:42 (454,351)
2001/10/17 08:18 (450,349)
2001/10/17 08:42 (446,346)


REgards,

Toni Scarmato
Oct 17 2001 05:26:26 Xavier Leprette
xavier.leprette@education.gouv.fr
A possible sungrazing comet in a real-time C2 images now.


The object is faint, small, without tail and it is visible in 2 consecutive images
on 2001/10/17 from 08:50 to 09:06 UT in bottom right quadrant on the left of the logo.
The object is moving toward the sun.

Approximate positions measured from the top-left corner
of a 1024x1024 frames :
col, row
08:50 UT 905,1008
09:06 UT 892,994

I'm waiting other images to confirm the object.

Xavier Leprette
Oct 17 2001 05:28:36 XingMing Zhou
zh_x_m@163.net
yer, I can confirm another Hoenig's bright comet!


XingMing Zhou
Oct 17 2001 05:36:15 Scarmato Toni
toniscarmato@libero.it
Another brigth object moving toward the sun in C3 real-time


512x512 (0,0) top-left corner

2001/10/17 08:42 (324,344)
2001/10/17 09:18 (324,342)


I can confirm the first object of my last report
visible also at 2001/10/17 09:18 (374,366)


Toni Scarmato
Oct 17 2001 05:43:33 Scarmato Toni
toniscarmato@libero.it
4th object visible in 4 consecutive image C3


512x512 (0,0) top-left corner


2001/10/17 07:42 (335,326)
2001/10/17 08:18 (333,323)
2001/10/17 08:42 (332,320)
2001/10/17 09:18 (328,318)

Objcet faint and diffuse.


Toni Scarmato
Oct 17 2001 05:49:52 Xavier Leprette
xavier.leprette@education.gouv.fr
A possible sungrazing comet in a real-time C2 images now.

UPDATE :
The object is faint, small, without tail and it is visible in 3 consecutive images
on 2001/10/17 from 08:50 to 09:26 UT.
The object is moving toward the sun.

Approximate positions measured from the top-left corner
of a 1024x1024 frames :
col, row
08:50 UT 905,1008
09:06 UT 892,994
09:26 UT 873,978

Xavier Leprette
Oct 17 2001 06:09:14 Scarmato Toni
toniscarmato@libero.it
Update.


I can confirm only two comets of my reports.

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

2001/10/17 07:42 (378,372)
2001/10/17 08:18 (377,371)
2001/10/17 08:42 (376,368)
2001/10/17 09:18 (374,366)
2001/10/17 09:42 (372,364)


second comet

2001/10/17 07:42 (335,326)
2001/10/17 08:18 (333,322)
2001/10/17 08:42 (332,320)
2001/10/17 09:18 (328,318)
2001/10/17 09:42 (327,317)



Toni Scarmato
Oct 17 2001 06:25:47 XingMing Zhou
zh_x_m@163.net
I can confirm Leprette's comet in C2.


XingMing Zhou
Oct 17 2001 07:20:51 Sebastian Hoenig
Sebastian@sungrazer.org
Let me bring all the reports in order:


Xingming's object is what I called my 1st object.
Toni had two times nothing and two times both of my objects.

Xavier, congratulations to your new discovery in C2!

Regards, Sebastian
Oct 17 2001 07:56:05 Scarmato Toni
toniscarmato@libero.it
Dear Doug, dear all


Yes! The two comets that I Have reported are the same
Sebastian's comets.

But, for honesty, I saw the brigth comet on b/w images at
07:42 abd 08:18, but I not have reported only two positions.

Many time, for this, I Have received a rebuke.

I think that the credit for one comet is for Sebastian and
Xingming, and for the second comet for Sebastian and me.

This is my opinion.

Regards,

Toni
Oct 17 2001 08:19:37 Sebastian Hoenig
Sebastian@sungrazer.org
Just a comment on Toni's suggestion:


Perhaps reporting less than 4 positions has to do something with
reliability. Count my false reports within the last 6 months...

Doug wrote in April and May:
"I have always given credit to anyone, no matter how few images
and or positions they report. That's not something I wanted to
publicize too widely."

"Yes, we accept fewer, but only when it's
such an obvious comet even my Mom would recognize it."

"Generally, if a comet is bright enough and extended enough to
look cometary, then fewer than 4 images is okay. Though, not
really desired. Also, some observers are better at
distinguishing comets from the noise than others. So, I don't
mind so much if they submit an occasional report with fewer than
4 images. Some people post virtually every day and are wrong
over 99% of the time. Others are accurate to that sort of level."

Please private replies as this webpage is for comet reportings...

Sebastian
Oct 17 2001 09:36:24 XingMing Zhou
zh_x_m@163.net
I have only seen that comet close to the sun in only 

two pictures, Get the third picture when coming out
I have reported to it , I saw the report of Sebastian too
at the same time. Because nearest several it finds to
be darker comet, attention of I only in disc nearby,
I have not found another brighter one. Two comets are
both that Sebastian was found, this is undoubted.

The position public lecture lacked very much causes a
lot of mistakes, this is really a question, Everybody
does not hope to see too much information of no use, it
is believed that Doug can deal with this question better.

XingMing Zhou
Oct 17 2001 09:58:05 michael boschat
aa063@chebucto.ns.ca
OT - sorry but I'm just lurking now.


I just read the confusion of these comets.
I think Doug should restrcture the discovery
procedure as this:

No matter "how expert" an observer is at finding a
comet on 1 image, the new implemented form will require
4 XY coordinates, "not 1, not 2, not 3" but 4 coordinates.
Any less will not be accepted.

My .02 rubles worth...

Mike B.
Oct 17 2001 11:43:06 Xavier Leprette
xavier.leprette@education.gouv.fr
Possible comet is coming in C2 images now


One image for the moment but it looks like a comet.
May be I am wrong. I'm waiting others images to confirm.
Perhaps it is the Sebastian's C3 comet.
Positions measured from the top-left corner
of a 1024x1024 frames :
col, row
14:50 UT 873,943

Xavier Leprette
Oct 17 2001 11:45:10 Sebastian Hoenig
Sebastian@sungrazer.org
Xavier,


I think it is my #1 comet, that one closer to the sun. That
suggestion is based on other recent comets' C2/C3 appearance.

Regards, Sebastian
Oct 17 2001 11:47:19 Xavier Leprette
xavier.leprette@education.gouv.fr
OK, it is a real comet, visible on a second image at 15:06 UT.

It is bright and obvious.

Xavier Leprette
Oct 17 2001 11:48:11 Chen Donghua
cdh_email@163.net
A comet in c2 image of 2001/10/17 staring from 14:50, bright.

Position 1024x1024 (0,0) top-left corner:

2001/10/17 14:50 872 942

Sebastian's comet enter c2.

Regards,
Donghua Chen
Oct 17 2001 14:49:17 Rob Matson
matsonr@saic.com
Hi All,


With all the comet reports in the last half day in both
C2 & C3, it's hard to keep track of duplications. In
case this one hasn't been reported yet, I see a bright
Kreutz-trajectory comet in C3 right now. Here are three
approximate positions (1024,1024 with 0,0 in upper left):

10/17 16:18 680,669
10/17 17:18 669,659
10/17 18:18 659,650

Am unable to download earlier 1024 images since the archive
has not updated past 10/16. (I pulled these from real time
images.) --Rob
Oct 17 2001 15:05:40 Rob Matson
matsonr@saic.com
Have a fourth image now to confirm the Kreutz comet in C3.

Slightly updated approximate coordinates (1024x1024, 0,0 in
upper left):

10/17 16:18 680,669
10/17 17:18 670,659
10/17 18:18 660,650
10/17 18:42 656,646

Still very bright; no obvious tail. --Rob
Oct 17 2001 15:53:33 Rob Matson
matsonr@saic.com
I have back interpolated my coordinates for the bright

comet in C3 and have determined that it is the same
comet as Sebastian's #2 comet. Apologies for the
repeat -- it takes a while to correlate observations
when the individual images are still not available
in the archive.

Rob Matson
Oct 17 2001 16:25:22 Michael Oates
mike@ph.u-net.com
Archive comet in C2 images from 06 Oct 2001

Good diffuse comet with short tail, seen in 6
images. Plus there are 512x512 PW Seq images
after image 21101432.fts to fill in the gap

(0,0 in bottom left corner in 1024x1024 images)
Image Col Row Time Date
21101432.fts 979 81 20:30:05.577 2001/10/06

21101438.fts 921 130 21:30:08.742 2001/10/06
21101439.fts 898 150 21:54:05.726 2001/10/06
21101440.fts 886 160 22:06:05.419 2001/10/06
21101441.fts 862 180 22:30:07.004 2001/10/06
21101442.fts 823 213 23:06:57.783 2001/10/06

Michael Oates
Oct 17 2001 20:28:51 Michael Boschat
aa063@chebucto.ns.ca
Sebastian's Comet #2 has entered the

C2 field on the 20011017_2350 UT image,
a faint tail is noted also.

Mike Boschat
Oct 17 2001 22:49:44 XingMing Zhou
zh_x_m@163.net
Possible sungrazer comet in real-time c3 images now.

bright!
0,0 in upper left corner.

Images Size X, Y
----------------------------------------------
20011018_0018_c3.gif 512 x 512 474, 415
20011018_0142_c3.gif 512 x 512 463, 409
20011018_0218_c3.gif 512 x 512 458, 407(b/w)

XingMing Zhou
Oct 17 2001 23:41:00 XingMing Zhou
zh_x_m@163.net
sorry,no comet in C3, my error.


XingMing Zhou
Oct 18 2001 03:52:44 Scarmato Toni
toniscarmato@libero.it
Possible comet in C3 real-time image b/w.


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


2001/10/18 06:18 (407,320)
2001/10/18 06:42 (406,319)


I am waiting other images to confirm

Regards,
Toni Scarmato

Oct 18 2001 05:34:10 Sebastian Hoenig
Sebastian@sungrazer.org
No object at Toni's positions in 1024 images.


Regards, Sebastian
Oct 18 2001 05:44:32 Scarmato Toni
toniscarmato@libero.it
Yes! I agree with Sebastian, no cometary object

visible at 09:18.

Toni
Oct 18 2001 06:50:44 michael boschat
aa063@chebucto.ns.ca
Possible sungrazer in C3 images - 20011018_0918 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
--------------------------------------------
20011018_0918.gif 512 x 512 343, 308
20011018_0942.gif 512 x 512 342, 305

----------------
Michael Boschat
Oct 18 2001 07:16:40 Sebastian Hoenig
Sebastian@sungrazer.org
Mike,


I am not sure on your report. There is a moving object close to
your positions but I'm not sure on this one. It is fitting your
coordinates somehow. I will give you the positions
for analyzing and comparing:

(0,0) upper left, 1024 (0,477) lower left, 512

your XY measured your XY measured
09:18 686,686 684,675 09:18 343,308 342,303
09:42 684,680 680,671 09:42 342,305 340,300
10:42 ---,--- 670,661 10:42 ---,--- 335,296

Regards, Sebastian
Oct 18 2001 07:34:08 Maik Meyer
maik@comethunter.de
Confirmation of likely candidate.


The 11:18 UT image shows another point in good agreement with the
positions given by Sebastian. I think Mike is actually referring
to this. The next image should be confirmatory.

OT: Congrats to all to the flood of discoveries. Especially
Xing-Ming's find is exceptional and not as "boring" as all these
Kreutz comets.

Regards

Maik
Oct 18 2001 07:53:46 Scarmato Toni
toniscarmato@libero.it
Another suspect object is visbile in C3 at postions:


2001/10/18 09:18 (376,341) b/w
2001/10/18 11:18 (369,332)


In the last image seem to ave a tail.


I am waiting other images to confirm


Regards,

Toni Scarmato
Oct 18 2001 08:04:33 Sebastian Hoenig
Sebastian@sungrazer.org
Yes! Congratulations Mike! The comet is also visible in 11:42.

It has taken you quite a while but finally you did you #30.

No object visible at Toni's positions. Note that the 2nd positons
hosts the dark/light spot.

Regards, Sebastian
Oct 18 2001 08:05:34 Scarmato Toni
toniscarmato@libero.it
The object of my last report is visible also at

2001/10/18 11:42 (368,331)

Toni
Oct 18 2001 08:09:40 Maik Meyer
maik@comethunter.de
Toni,


with all retentiveness - this is ridiculous. Two images, separated
by two hours and one is only a small and unprocessed B/W image -
there is not the slightest reason to post such a claim.

Even if there might be a short flood of comets, we should still be careful to hold down noise and to apply scientific methods for
inspecting and reporting. This is no Olympic Games in finding
comets and there are more important things in the real life than
to lose credit for a comet that is nevertheless called "SOHO".

When I look back at the last days on this board I see that at
least half of the messages could have been avoided if one had
a look at first at the board before posting.

Just MY 2 cents. (and my contribution to noise :-( )

Maik

P.S.: Mike B's proposal of a new form with four positions wouldn't
work, since you cann fil in the form with placeholders.
Oct 18 2001 08:13:35 Scarmato Toni
toniscarmato@libero.it
OK! Sebastian seem a dark point.


What is the brigth point mowing in horizontal
way at positions:


2001/10/18 09:18 (353,441)
2001/10/18 11:18 (365,440)
2001/10/18 11:42 (368,440)


Toni Scamato

Oct 18 2001 08:24:58 Sebastian Hoenig
Sebastian@sungrazer.org
Toni,


Use 1024 images and ask yourself what it might be!!!!!!!!

Sebastian

PS: SAO 157711
Oct 18 2001 08:29:30 Sebastian Hoenig
Sebastian@sungrazer.org
New sungrazer in LASCO C3 images, starting 20011018_1118_c3.gif


Date: Oct 18, 2001

Description:
diffuse, might become bright, elongated

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

Time (x,y)

11:18 823,832
11:42 820,829
12:18 814,823

More on this soon.

Sebastian Hoenig
Oct 18 2001 08:47:56 michael boschat
aa063@chebucto.ns.ca
UPDATE on the comet I detected earlier

at 0918 UT this date.

****** 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
--------------------------------------------
20011018_1042.gif 512 x 512 335, 300
20011018_1118.gif 512 x 512 333, 298
20011018_1142.gif 512 x 512 331, 295

----------------
Michael Boschat
Oct 18 2001 09:09:44 Sebastian Hoenig
Sebastian@sungrazer.org
New sungrazer in LASCO C3 images, starting 20011018_1118_c3.gif

(Update)

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

Time (x,y)
11:18 823,832
11:42 820,829
12:18 814,823
12:42 811,820

The comet is developing a tail.

Sebastian Hoenig
---------

Just to have the overview regarding all the posts since yesterday
and the fact that Doug is busy at the moment.
Real comets have been reported at:

Oct 17 01:55:11 C3 Xingming
04:28:23 C3 Sebastian
04:28:32 C3 Sebastian
05:26:26 C2 Xavier
16:25:22 C2 Mike O (archival of Oct 06)
Oct 18 06:50:44 C3 Mike B
08:29:30 C3 Sebastian
Oct 18 2001 11:27:27 Rainer Kracht
R.Kracht@t-online.de
possible comet in C2

512 enlarged to 1024 0,0 top left corner
14:26 899/1010
14:50 881/993
Oct 18 2001 11:50:42 Sebastian Hoenig
Sebastian@sungrazer.org
Rainer,


of course what you found is a comet but it might be the one
Mike Boschat reported earlier today in C3. Sorry...

Sebastian
Oct 18 2001 12:47:29 Rainer Kracht
R.Kracht@t-online.de
UPDATE

comet in C2 realtime images
512 enlarged to 1024 0,0 in upper left corner

time x,y
15:06 868,980
15:26 853,963
it might be the one
Mike Boschat reported earlier today
but it might be new...
Oct 18 2001 12:57:38 XingMing Zhou
zh_x_m@163.net
Another possible sungrazer comet in real-time

c3 images now. It's buzzy.
0,0 in upper left corner.

Images Size X, Y
----------------------------------------------
20011018_1342_c3.gif 512 x 512 320, 317
20011018_1418_c3.gif 512 x 512 317, 314
20011018_1442_c3.gif 512 x 512 315, 312
20011018_1518_c3.gif 512 x 512 312, 309
20011018_1542_c3.gif 512 x 512 309, 307

XingMing Zhou
Oct 18 2001 13:27:07 XingMing Zhou
zh_x_m@163.net
Sorry,It's fuzzy,very fuzzy, I can't affirm it is a comet . 


XingMing Zhou
Oct 18 2001 13:31:33 michael boschat
aa063@chebucto.ns.ca
Comet in C3 at 20011018_1342 UT bright!
coordinates to follow
Mike Boschat
Oct 18 2001 13:36:00 michael boschat
aa063@chebucto.ns.ca
Comet in C3 now. I assume the last post

is a retraction?


****** 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
--------------------------------------------
20011018_1342.gif 512 x 512 401, 376
20011018_1418.gif 512 x 512 399, 373
20011018_1442.gif 512 x 512 397, 370
20011018_1542.gif 512 x 512 393, 368

----------------
Michael Boschat
Oct 18 2001 14:17:02 Sebastian Hoenig
Sebastian@sungrazer.org
Mike,


the comet you reported is the same I reported earlier today.

Xingming's report spot the same you reported.

Regards, Sebastian
Oct 18 2001 14:47:56 michael boschat
aa063@chebucto.ns.ca
DIS-Regard my new post of the bright comet in

C3 at 20011018_1342 UT. It was Sebastian's
find from this morning.

Old age...ughhhh..

Mike Boschat

Oct 18 2001 16:05:09 Rainer Kracht
R.Kracht@t-online.de
new comet in C2 realtime images

512 enlarged to 1024 0,0 in upper left corner
18:50 818,934
19:27 786,900

I think this is Mike Boschat's C3

Regards, Rainer
Oct 18 2001 16:17:47 Sebastian Hoenig
Sebastian@sungrazer.org
Yes, Rainer is right. Mike B's comet entered later than I thought.

Therfore Rainer's claim of 11:27:27 is a NEW COMET.
Congratulations! That leads us to:

Oct 17 01:55:11 C3 Xingming
04:28:23 C3 Sebastian
04:28:32 C3 Sebastian
05:26:26 C2 Xavier
16:25:22 C2 Mike O (archival of Oct 06)
Oct 18 06:50:44 C3 Mike B
08:29:30 C3 Sebastian
11:27:27 C2 Rainer

Regards, Sebastian
Oct 19 2001 07:11:00 michael boschat
aa063@chebucto.ns.ca
Sebastian's comet in C3 - "close fragment?"


I've enlarged 512 pixel images to the maximum
size I can get with a ratio of 1:4 and doing a
manual loop of the images in negative
from 20011019_0218 UT to 20011019_0518 UT
the pixels look "double" which would mean
2 objects? Sort of look like this on the frames => **

As for numbers XY's:
****** 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
--------------------------------------------
20011019_0218.gif 512 x 512 349, 324
20011019_0318.gif 512 x 512 346, 321
20011019_0418.gif 512 x 512 344, 319
20011019_0442.gif 512 x 512 339, 313

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


Oct 19 2001 10:49:25 Xavier Leprette
xavier.leprette@education.gouv.fr
Perhaps Sebastian's comet is coming in C2 now ?


Approximate positions: (0,0) upper left, 512 x 512 images
col, row
11:06 UT 406,503

Xavier Leprette
Oct 19 2001 11:19:33 Donn Appleby
dappleby@cfl.rr.com
I see a comet transiting from the 4:30 (or SE) quadrant of my screen towards the sun beginning in LASCO/c3

ON 2001/10/18 TIME 16:42 THRU Today 2001/10/19 09:42.
Donn Appleby
dappleby@cfl.rr.com
Oct 19 2001 13:02:41 michael boschat
aa063@chebucto.ns.ca
In C2 negative image at 20011019_1626 --- 

comet found by Sebastian in field. Nice tail on
it!

Mike Boschat
Oct 19 2001 13:51:41 Rob Matson
matsonr@saic.com
Beautiful tail on the comet (Sebastian's?) in the C2

imagery in both 17:06 and 17:26 (black & white) nearly
as long as the diameter of the occulting disk! --Rob
Oct 19 2001 15:07:44 Xavier Leprette
xavier.leprette@education.gouv.fr
Possible sungrazing comet in a real-time C3 B&W images now.


It is visible from 2001/10/19 from 15:42 to 18:18 UT in 3 consecutive frames,
at South-West quadrant. The suspect object is moving towards the sun.

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

col, row
15:42 UT 370,395
16:42 UT 369,392

Xavier Leprette
Oct 19 2001 15:12:29 Xavier Leprette
xavier.leprette@education.gouv.fr
About my previous report :


I'm sorry, it is not coherent. No consider this.
Xavier
Oct 19 2001 19:15:09 Gil Esquerdo
esquerdo@psi.edu
All,


The Planetary Science Institute and Jarnac Observatory request
your assistance with an observing project we are conducting.

For the past four weeks, we have been observing the Kruetz
sungrazer track a considerable distance from the sun with
groundbased telescopes. The intent was to extend the observation
arcs on these comets enough to better determine the orbits.

The fields we started to observe four weeks ago would now have
comets entering the SOHO coronographs (starting this weekend).
Unfortunately, we have not had any detections to date.

Our request is that you, as observers, be especially diligent in
regards to finding comets in the SOHO data until approximately
the end of November. PLEASE do not flood Doug and Derek with
possibles. Go about your normal discovery routines. We will
only use (and only be able to use) the comets reported and
confirmed via the normal channels. I just ask that you be a
litte extra careful in your searching.

The data from our survey work, as well as the discoveries made
here will eventually be published in a journal article. As
we have not yet detected a comet in our more distant fields,
the paper may concentrate on how the Kruetz Comets
brighten as they approach the sun vs. farther away. I will keep
you posted as to the progress.

I appreciate your work and effort. You have more patience than
I do to look for these tiny specks in the coronagraph images.
Once the period of observability has passed, I will contact you
individually regarding your involvement in this project.

Thank you for your assistance. If you have any questions, you
may contact me directly via email.

Gil Esquerdo
Planetary Science Institute,
Jarnac Comet Survey
Oct 20 2001 04:26:04 Scarmato Toni
toniscarmato@libero.it
Possible comet in C3.


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

2001/10/20 05:42 (354,320)
2001/10/20 06:18 (352,318)
2001/10/20 07:42 (348,313)


Toni Scarmato
Oct 20 2001 05:30:41 Scarmato Toni
toniscarmato@libero.it
Update last report.


I waiting other images to confirm.

I Have looked well the sequence seem that the object is
visible also on image

2001/10/20 05:18 (355,321)

but I am not sure because there is also noise.

Toni Scarmato
Oct 20 2001 08:27:34 Sebastian Hoenig
Sebastian@sungarzer.org
No cometary object visible at Toni's positions.


Regards, Sebastian
Oct 20 2001 08:56:29 michael boschat
aa063@chebucto.ns.ca
Possible sungrazer in C3 images - 20011020_1118 UT


Could be noise not sure, have
to go out so will post this now.
It starts to the right of a cosmic
ray in lower right part of C3 image.

****** 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
--------------------------------------------
20011020_1118.gif 512 x 512 417, 356
20011020_1142.gif 512 x 512 418, 355
20011020_1218.gif 512 x 512 414, 350

Mike Boschat
Oct 20 2001 13:51:28 michael boschat
aa063@chebucto.ns.ca
Disregard my post at Oct 20 2001 08:56:29.


I just got home and downloaded more images,
object not continued on them, thus my opinion
is noise. Sorry

Mike Boschat
Oct 20 2001 15:21:03 Rainer Kracht
R.Kracht@t-online.de
possible comet in C3 realtime images

1024*1024 0,0 in upper left corner

2001 Oct 20
time x,y
15:42 698,716
16:18 690,709
16:42 687,704
17:18 680,697

Regards, Rainer
Oct 20 2001 21:37:59 Tony Hoffman
Tony.Hoffman@worldnet.att.net
Possible comet in C3 realtime images 

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

2001_1020 2218 715,755
2001_1020 2142 718,761
2001_1020 2118 724,767
2001_1020 2042 730,772
2001_1020 2018 734,776

A bit wispy.

Tony Hoffman
Oct 21 2001 01:26:49 Sebastian Hoenig
Sebastian@sungrazer.org
Regarding Tony's and Rainer's claim:

I am not able to confirm any of them. They seem to be combinations
of cosmic rays which are more present at the moment due to the
X1-flares occured Thursday.

Regards, Sebastian
Oct 22 2001 00:56:08 XingMing Zhou
zh_x_m@163.net
A very bright comet in C3 now ,with a short tail ,

form 0318 to 0342

XingMing Zhou
Oct 22 2001 00:59:27 Xavier Leprette
xavier.leprette@education.gouv.fr
Bright comet in C3 now from 2:42 to 4:18


Xavier
Oct 22 2001 01:01:12 XingMing Zhou
zh_x_m@163.net
A very bright comet in C3 now ,with a short tail ,

0,0 in upper left corner.

Images Size X, Y

20011022_0242_c3.gif 512 x 512 449, 441
20011022_0318_c3.gif 512 x 512 447, 440
20011022_0342_c3.gif 512 x 512 445, 438
20011022_0418_c3.gif 512 x 512 443, 436

XingMing Zhou
Oct 22 2001 01:05:14 Xavier Leprette
xavier.leprette@education.gouv.fr
Bright sungrazing comet in a real-time C3 images on 2001/10/22

(More information about my two previous messages)

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

col, row
02:42 UT 449,442
03:43 UT 445,437
04:18 UT 443, 435

Xavier Leprette
Oct 22 2001 02:28:02 Maik Meyer
maik@comethunter.de
Confirmation of Xing-Ming's and Xavier's comet:


Congrats!
This is a really bright object; in fact one of the brightest
Kreutz comets at this distance I've seen. The tail is already
quite long. Let's hope it will put on a good show.

Maik
Oct 22 2001 03:48:35 Sebastian Hoenig
Sebastian@sungrazer.org
Very nice new comet!


It reminds me of SOHO-347=C/2001 R2. Therefore I have combined
two images comparing both comets. You can see it at
www.sungrazer.org if you like to.

Regards, Sebastian
Oct 22 2001 03:51:56 Terry Lovejoy
lovejoyt@ozemail.com.au
I hope Gil Esquerdo is having a look at his ground based

images from September...this new comet is quite impressive!
About magnitude 6 or so at the edge of the LASCO C3 field.

Congrats to Xavier and Xing-Ming!

Terry
Oct 22 2001 11:06:53 Gorelli Roberto
md6648@mclink.it
Congratulations to Xing-Ming and Xavier!

Perielium at october 23.98?
Roberto

Oct 22 2001 16:22:35 Martin Chuter
martin.saturdayparty@ntlworld.com
LASCO C3 Images....



Comet appears in bottom right of C3 Images from pictures,
If the image was a clock, the comet would appear at 4:30 in the bottom right of the image.

See the image dated 22/10/01 at 13:52

x:403
y:399
Oct 22 2001 16:23:57 Sebastian Hoenig
Sebastian@sungrazer.org
Martin,


it's the comet discovered by Xingming earlier today.

Regards, Sebastian
Oct 22 2001 16:24:26 Martin Chuter
martin.saturdayparty@ntlworld.com
Possible Comet LASCO C3 Images


Comet found in bottom right picture of LASCO C3 Image dated 22/10/01 13:52. If the image was a clock, the comet would appear at 4:30.

x:403
y:399
Oct 22 2001 16:26:59 Martin Chuter
martin.saturdayparty@ntlworld.com
Sorry about sending this again, just wanted to get the information correct!!!


Possible Comet LASCO C3 Images

Comet found in bottom right picture of LASCO C3 Image dated 22/10/01 13:52. If the image was a clock, the comet would appear at 4:30.

512 x 512 image

x:403
y:399
Oct 22 2001 16:29:37 Sebastian Hoenig
Sebastian@sungrazer.org
Martin,


again: it's the comet discovered by Xingming earlier today.

Regards, Sebastian
Oct 23 2001 13:11:16 Tony Hoffman
Tony.Hoffman@worldnet.att.net
Xingming's comet is in C2 (14:50 is the first frame I could access)--magnificent! Any chance of it surviving perihelion?


--Tony Hoffman
Oct 23 2001 13:55:11 Xavier Leprette
xavier.leprette@education.gouv.fr
Archive comet sungrazer in C3 images from 08 November 1996


The suspect object is faint, fairly elongated and fuzzy without tail. It is visible in 10 consecutive C3 frames.

Positions measured from the bottom left corner
in 1024x1024 and 1024x576 frames :

Ref. image, X, Y, Time , Date , Format
32010062.fts 604 107 02:45:05.390 08 Nov 1996 576
32010063.fts 600 114 03:30:05.364 08 Nov 1996 576
32010064.fts 595 121 04:12:05.840 08 Nov 1996 576
32010065.fts 588 131 05:15:06.503 08 Nov 1996 576

32010066.fts 582 363 06:10:05.672 08 Nov 1996 1024

32010067.fts 575 150 07:11:07.736 08 Nov 1996 576
32010068.fts 570 158 08:00:05.508 08 Nov 1996 576

32010073.fts 562 394 09:11:14.668 08 Nov 1996 1024

32010074.fts 553 183 10:20:06.828 08 Nov 1996 576
32010075.fts 548 192 11:11:08.599 08 Nov 1996 576

Xavier Leprette
Oct 23 2001 19:36:52 Norman Chidiac
lune@oricom.ca
Image of CME, monday oct 22nd, Lasco C3. Is that another comet plunging into the Sun at 4:20 (20 minutes past 4) ??


Thnak you

Norman
Oct 23 2001 20:30:47 Sebastian Hoenig
Sebastian@sungrazer.org
Norman,


Yes, that's SOHO-367 (unconfirmed) - among the brightest SOHO
sungrazer ever observed.

Regards, Sebastian
Oct 24 2001 03:54:13 Scarmato Toni
toniscarmato@libero.itq
Possibile comet in C3.


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


2001/10/24 04:42 (410,435)
2001/10/24 05:18 (408,433)
2001/10/24 06:18 (405,430)
2001/10/24 06:42 (405,429)


Toni Scarmato
Oct 24 2001 04:05:25 Maik Meyer
maik@comethunter.de
Without even looking at Toni's positions - there can't be a real

object since the movement is erratic and not typical for a Kreutz
type comet:

Movement in pix/min (1024x1024)

X Y
Image 1
0.2 0.13
Image 2
0.07 0.1
Image 3
0 0.07
Image 4

Additionally - nothing can be seen at the given coordinates in
1024x1024 images down to noise level.

Maik
Oct 24 2001 04:44:42 Scarmato Toni
toniscarmato@libero.it
Regarding my last post

No object visible on image at 2001/10/24 07:42.


Toni
Oct 24 2001 04:52:31 Scarmato Toni
toniscarmato@libero.it
Possible comet in C3


positions

2001/10/24 05:18 (490,340)
2001/10/24 06:18 (487,337)
2001/10/24 06:42 (485,335)
2001/10/24 07:42 (476,326)

Near Mercury, I am waiting other images to confirm



Toni
Oct 24 2001 05:02:51 Maik Meyer
maik@comethunter.de
Without even looking at Toni's positions - there can't be a real

object since the movement is erratic:

Movement in pix/min (1024x1024)

X Y
Image 1
0.1 0.1
Image 2
0.13 0.13
Image 3
0.3 0.3
Image 4

At 1024x1024 images 1 and 2 show nothing down to noise level and
images 3 and four show noise with varying brightness and shape.

Again..

Maik

Oct 24 2001 09:08:18 michael boschat
aa063@chebucto.ns.ca
Looking at my star maps of were the Sun

is now, the bright object in the lower right of
C3 images is not Mercury but Alpha Virginis -- Spica.

Mike Bocchat
Oct 26 2001 03:02:23 Scarmato Toni
toniscarmato@libero.it
Possible comet in C3.


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

2001/10/26 03:42 (384,326)
2001/10/26 04:18 (381,324)
2001/10/26 04:42 (380,323)
2001/10/26 05:18 (377,321)



Toni Scarmato
Oct 26 2001 03:30:15 Scarmato Toni
toniscarmato@libero.it
Regarding my last report, no real objcet at

2001/10/26 06:18


Toni
Oct 26 2001 18:16:30 Douglas Biesecker
doug@sungrazer.nascom.nasa.gov
Hi everyone,


It's been a really long time since you've gotten one of these
reports. There's a large backlog of reports I'm still sorting through.
This e-mail covers 6 comets reported between October 13, 2001 and October
17 at 20:00 UT. Five of the comets are apparent Kreutz sungrazing comets.
One is obviously not following the Kreutz comet trajectory (SOHO-359).
Not all possible data have been checked yet. Thus, it is possible the
comets reported to be in only the C2 telescope may yet be found in C3
data.

As many of you are no doubt aware, there are quite a few more
comets which have been reported. I hope to get those out to you early
next week.

Doug

SOHO # Discoverer Dates Telescope
--------------------------------------------
357 R. Kracht 01 Oct 15 C2
358 X. Leprette 01 Oct 16 C2
359 D. Chen 01 Oct 14-15 C3 (non-Kreutz)
360 S. Hoenig 01 Oct 17 C2, C3
361 S. Hoenig 01 Oct 17-18 C2, C3
362 X. Leprette 01 Oct 17 C2

Oct 26 2001 20:37:26 Chen DongHua
cdh_email@163.net
Hi all,


The comet SOHO-359 did not find by me, it belongs
to XingMing Zhou.

Regards,

Donghua Chen
Oct 27 2001 01:01:49 XingMing Zhou
zh_x_m@163.net
No metter, Doug will notice this, both are from China:)

It is a more important thing to observe the game rule.

XingMing Zhou
Oct 27 2001 06:14:06 XingMing Zhou
zh_x_m@163.net
possible sungrazer comet in real-time c3 images now.

It's faint and fuzzy.
0,0 in upper left corner.

Images Size X, Y

20011027_0642_c3.gif 512 x 512 387, 373
20011027_0742_c3.gif 512 x 512 385, 370
20011027_0842_c3.gif 512 x 512 384, 368(B/W)
20011027_0942_c3.gif 512 x 512 383, 366(B/W)

XingMing Zhou
Oct 27 2001 10:07:38 XingMing Zhou
zh_x_m@163.net
I can't verify my last report, sorry.


XingMing Zhou
Oct 27 2001 16:14:26 michael boschat
aa063@chebucto.ns.ca
Object moving right to left C3 images - 20011027_1742 UT


Not sure what it is. It looks like a faint
star, but is moving opposite to them from
right to left.

It's hard to get accurate with 512 sizes and the
coordinates are as close to were I can locate it.
Just to the left 4 pm position of the faint black
"noise" and a star.

Here are the (approximate) XY coordinates of
the object and an image of the area.

****** 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
--------------------------------------------
20011027_1742.gif 512 x 512 375, 304
20011027_1818.gif 512 x 512 374, 305
20011027_1842.gif 512 x 512 374, 303

----------------
Michael Boschat
Oct 27 2001 16:36:23 michael boschat
aa063@chebucto.ns.ca
Update on object I just reported..


It is seen from 1618 UT images onwards...

******** PLEASE NOTE ********

For the coordinates below I have REVERSED the
images 180 degrees then enlarged them to
1:2 hopefully this may help.

I can send a cropped image of the area
if so requested.

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


0,0 in upper left corner

LASCO C3 IMAGES

Date & UT Size X and Y
of Images used Coordinates
--------------------------------------------
20011027_1618.gif 512 x 512 122, 176
20011027_1642.gif 512 x 512 123, 175
20011027_1742.gif 512 x 512 126, 176
20011027_1818.gif 512 x 512 127, 175
20011027_1842.gif 512 x 512 128, 175

----------------
Michael Boschat
Oct 28 2001 00:42:22 Brad Feinner
bradf@inreach.com
Please forgive the lack of proper formatting, I just wanted to

report this. Tuesday evening I sent an email to DR SOHO
regarding two comets I had observed on LASCO C3. They were in
animated GIFs for:

2001/10/18 ~22:00 - 2001/10/19 ~19:00

2001/10/22 ~01:00 - 2001/10/23 ~17:00

The email was sent not long after the occurrence of the second
of these. I didn't know how to report these, that's why I
sent it to DR SOHO. Friday morning I saw the second of these
reported on CNN and wondered if I had actually been the first
to see it.

Tonight I was rechecking the animated GIFs for:

2001/10/17 ~05:00 - 2001/10/18 ~01:00

and observed one I had missed before. BTW, all of these are
easily seen in the GIFs and move from lower right toward the
sun, which probably means they've all been reported, but I just
want to get this in, in case any have not been.

Following is the email I sent to DR SOHO, BTW I never got a
reply:
--------------------------------------------
Subject: DR.SOHO:
Date: Tue, 23 Oct 2001 18:13:43 -0700
From: Brad
Reply-To: bradf@inreach.com
To: letters@sohops.gsfc.nasa.gov


I have downloaded two of the animated GIFs for LASCO/C3, and
on each of them I saw an object that came in from the lower
right and seemed to impact the sun. These objects had the
appearance of comets, but were small. I would like to know
if they were, in fact, small comets or some other type of
phenomenon. The objects I'm asking about are in all frames
after they first appear, and travel directly toward the image
center (sun) frame-by-frame. Am I discovering small comets,
or what?
If yes, perhaps I should report them in case I'm the first to
see them. If so, how would I go about doing this? Is there
any recognition for discovering a comet that is destroyed by
impacting the sun as soon as it's discovered? Thanks for any
info.

Brad Feinner
bradf@inreach.com
--------------------------------------------
I'll do this correctly from now on. Thanks.

Brad
Oct 30 2001 09:52:30 Doug Biesecker
doug@sungrazer.nascom.nasa.gov
This covers all reports up through the end of the day on

Oct 19, 2001.

First and most importantly, I need to correct an error in my last
report. The non-Kreutz comet in the C3 telescope on Oct 14-15
(SOHO-359) was incorrectly credited to D. Chen. D. Chen was
thoughtful enough to point out that the credit for this report
goes to X.M. Zhou.

This report includes 4 more comets, all apparent Kreutz family
sungrazing comets. The table below lists the SOHO #, discoverer,
telescopes and dates visible for each of the comets. Note,
SOHO-365 was fairly bright with a nice long tail.

# Discoverer Dates Telescope
----------------------------------------
363 M. Oates 01/10/06 C2
364 M. Boschat 01/10/18 C2,C3
365 S. Hoenig 01/10/18-19 C2,C3
366 R. Kracht 01/10/18 C2


Doug
Oct 30 2001 10:14:58 Scarmato Toni
toniscarmato@libero.it
Possible comet in C2 starting at 


2001/10/30 00:06 (794,965)

1024x1024 (0,0) top-left corner


Other positions at next e-mail

Toni Scarmato
Oct 30 2001 10:21:44 Scarmato Toni
toniscarmato@libero.it
Update last report


Positions 1024x1024 (0,0) top-left corner


2001/10/30 00:06 (794,965)
2001/10/30 00:30 (784,948)
2001/10/30 00:54 (769,930)
2001/10/30 01:31 (744,904)


Object faint but well visible moving toward the sun.


Toni
Oct 30 2001 10:34:53 Sebastian Hoenig
Sebastian@sungrazer.org
I cannot confirm Toni's report.


Regards, Sebastian
Oct 30 2001 11:16:21 Scarmato Toni
toniscarmato@libero.it
Possible comet in C2 visible in 6 consecutive images


Approximate Positions 1024x1024 (0,0) top-left corner

2001/10/30 07:31 (740,1012)
2001/10/30 07:54 (742,999)
2001/10/30 08:06 (743,992)
2001/10/30 08:30 (745,977)
2001/10/30 08:54 (746,962)
2001/10/30 09:06 (747,956)



Toni Scarmato
Oct 30 2001 13:43:58 Sebastian Hoenig
Sebastian@sungrazer.org
I cannot confirm Toni's report - varying very much in brightness

and shape. Seems to be a combination of cosmic rays.

Sebastian
Oct 30 2001 20:23:05 Rainer Kracht
R.Kracht@t-online.de
possible comet in C2 images

512 enlarged to 1024 0,0 in upper left corner

time (Oct 31) x,y
0030 744,1014
0054 728,994

Regards, Rainer
Oct 30 2001 20:52:52 michael boschat
aa063@chebucto.ns.ca
Possible sungrazer in C2 images - 20011031_0054 UT


Looks slightly condensed and small.


****** 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
--------------------------------------------
20011031_0054.gif 512 x 512 365, 466
20011031_0131.gif 512 x 512 353, 451

Mike Boschat
Oct 30 2001 20:56:13 Rainer Kracht
R.Kracht@t-online.de
UPDATE possible comet in C2 images

512 enlarged to 1024 0,0 in upper left corner

time (Oct 31) x,y
0030 744,1014
0054 728,994
0131 704,962

Regards, Rainer
Oct 30 2001 21:12:19 michael boschat
aa063@chebucto.ns.ca
I can't match Rainer's XY's and do "not" see 

anything comet at 0030 UT in C2. I NOTED
something starting at 0054 UT and also on 0131 UT
images in C2 which could be a comet as I have
posted. I'm waiting for another image.

Mike Boschat

Oct 30 2001 21:21:48 Rainer Krachr
R.Kracht@t-online.de
UPDATE possible comet in C2 images

512 enlarged to 1024 0,0 in upper left corner

time (Oct 31) x,y
0030 744,1014
0054 728,994
0131 704,962
0154 688,942
0206 680,932

seems to be a small Kreutz comet
(easily visible in image at 00:30 UTC)

Regards, Rainer
Oct 30 2001 21:25:28 XingMing Zhou
zh_x_m@163.net
I can confirm a comet in C2 now.


XingMing Zhou
Oct 30 2001 21:27:53 michael boschat
aa063@chebucto.ns.ca
I don't know were Ranier got 0030 UT image

as I cannot find it on the SOHO site or the
other site. I don't know if Rainer is
talking about black and white images or the
red SOHO ones....!

But the new image just came in at 0206 UT and the object
is there and is a comet.

So......to heck with it.... I'LL CONFIRM Rainer's
find in C2! ^^^^^^^^^^^^

Forget my last posts!

Congrats Rainer

Mike Boschat
Oct 31 2001 11:42:42 Scarmato Toni
toniscarmato@libero.it
Possible comet in C3 starting at position


1024x1024 (0,0) top-left corner

2001/10/31 15:42 (957,742)
2001/10/31 16:18 (955,737)

I am waiting other images to confirm


Toni Scarmato
Oct 31 2001 11:55:04 Scarmato Toni
toniscarmato@libero.it
Possible comet in C2 


1024x1024 (0,0) top-left corner

2001/10/31 00:54 (730,995)





Toni Scarmato
Oct 31 2001 11:58:44 Scarmato Toni
toniscarmato@libero.it
Update comet in C2


Positions 1024x1024 (0,0) top-left corner

2001/10/31 00:54 (730,995)
2001/10/31 01:31 (705,968)
2001/10/31 01:54 (690,944)

Comet with a short tail



Toni


Oct 31 2001 12:02:48 Sebastian Hoenig
Sebastian@sungrazer.org
Regarding Toni's reports:


No comet visible in C3. The comet "reported" in C2 is already
known (discovered by Rainer). A look on the reports might help
and is recommended.

Regards, Sebastian
Oct 31 2001 12:08:07 Scarmato Toni
toniscarmato@libero.it
I can confirm the comet in C2.


Nice probably Kreutz comet with a short tail.


Toni
Oct 31 2001 12:11:47 Scarmato Toni
toniscarmato@libero.it
Yes, is the comet reported by Rainer.


I Have read the date of report 2001/10/30.


Toni
Oct 31 2001 12:54:15 Scarmato Toni
toniscarmato@libero.it
Another possible faint comet in C2.


positions 1024x1024 (0,0) top-left corner


2001/10/31 08:06 (747,1014)
2001/10/31 08:30 (738,1001)
2001/10/31 08:54 (729,987)
2001/10/31 09:06 (725,981)

Object on the same orbit of Rainer's comet
seem visible only on 4 images.

Toni Scarmato
Oct 31 2001 13:53:23 Sebastian Hoenig
Sebastian@sungrazer.org
Regarding Toni's #3 report for today:


No real object visible at his positions. That can be clearly
identified as noise regarding 1024 images.

Sebastian
Oct 31 2001 20:22:55 Rob Matson
matsonr@saic.com
Tentative object visible in only three frames of C2.

Approximate positions (1024x1024; 0,0 in upper left):

10/31 17:54 666,1009
10/31 18:30 634, 958
10/31 18:54 612, 921

Next frame is 19:31, but nothing visible. Previous frame
was 17:30, but the object if real would have been out of
the field of view. Speed seems a tad high, but the
direction is correct.

--Rob