SOHO-LASCO Comet Reports for 200304

Apr 07 2003 14:21:25 dsdsds dsdsds
xxx@xxx
test
Apr 07 2003 14:32:17 Derek Hammer
xxx@xxx
Test2
Apr 07 2003 14:40:39 Derek Hammer
xxx@xxx
TEST3







TEST3
Apr 07 2003 15:28:59 Adam Hart
xxx@xxx
Not an object report but WHAT is going on in the 2003/04/07 07:00 EIT 171A image?  It looks like we're on the virge of a massive solar storm (or worse)...  is this a broken filter or should we all start putting our heads between our legs?
Apr 07 2003 15:31:51 Derek Hammer
xxx@xxx
Hello,


The report page appears operational again...please make comet
claims at the bottom of the "Found Something?" link.

The following comets were confirmed during the report form
absence...

SOHO# Observer Date Camera
------------------------------------------
594 R. Kracht 03/03/29-30 C2,C3
595 X. Leprette 03/04/02 C2
596 J. Sachs 03/04/04 C2,C3


Derek
Apr 07 2003 15:55:56 Derek Hammer
xxx@xxx
Adam,


This is just an image processing effect. To convince yourself,
just look at the other EIT filters around this time.

Regardless, this is not the correct forum to ask such questions.
This website is only for the reporting of comets found in
LASCO images. All SOHO questions can be directed to :
xxx@xxx.

However, if you have any LASCO/comet questions, a website has been
established at http://groups.yahoo.com/group/sohohunter/ by
the persons who regularly post to this form. They are usually
quick to reply to anyone's LASCO/comet questions and are very
knowledgeable. If they don't know the answer exactly, they
typically are able to direct one to the location where the answers
can be found. Should your question not be satisfied, you can try
me at my email address: xxx@xxx.


Derek
Apr 08 2003 03:53:37 Sebastian Hönig
xxx@xxx
Just a test...
Apr 09 2003 05:18:41 Scarmato Toni
xxx@xxx
Possible faint comet in C2


Positions 512x512 0,0 top-left

20030409

0727 54,482
0750 65,458
0806 70,446
0826 81,422


Regards,

Toni Scarmato
Apr 09 2003 05:31:56 Scarmato Toni
xxx@xxx
Another faint object found in C3


Positions 512x512 0,0 top-left

20030409

0518 180,288
0542 183,285
0618 188,280
0642 191,277


I am not been able to verify if it is the same object
reported in the my previous report in C2.


Regards,

Toni Scarmato
Apr 09 2003 14:42:36 John Sachs
xxx@xxx
Possible Kreutz Sungrazer in  C3 images

Positions: (0,0) upper left, 1024x1024
Along the Occulting arm.May just be noise?
April 09 2003 (x y)
20030409 1742 C3 287 696
20030409 1718 C3 282 701
20030409 1642 C3 275 706
20030409 1618 C3 270 710
John
Apr 09 2003 18:33:30 mike boschat
xxx@xxx
Object in C3 @ 20030409_1842 UT


****** NOTE ******
x-coordinates are probably correct,
but y-coordinates may be off by
several pixels.
0,460 in lower left corner
LASCO C3 IMAGES - 1024 x 1024

Date Time X Y
-------- ---- --- ---
20030409 1842 310 89
1942 313 83
2018 319 78
2042 325 71
---------------
Michael Boschat
Apr 10 2003 01:38:46 Xu Chen
xxx@xxx
Hi,Michael Boschat!I can't confirm

your report,and maybe it's just
noise!

regards

Xu Chen
Apr 10 2003 09:25:16 mike boschat
xxx@xxx
Hi Xu Chen:


Thank you for checking:
Disregard my post of
Apr 09 2003 18:33:30

Mike B.
Apr 10 2003 21:09:55 Tony Hoffman
xxx@xxx
Possible comet in C2 on Kreutz track

(512 x 512, b/w, 0,0 in upper left corner)

20030411 0050 78,463
20030411 0006 70,477
20030410 2350 66,483

Awaiting further images to confirm.

--Tony Hoffman
Apr 10 2003 22:23:42 Tony Hoffman
xxx@xxx
Possible comet in C2 on Kreutz track--further positions

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

20030411 0127 168,898 (resized from 512 b/w)
20030411 0050 157,927
20030411 0006 140,954
20030410 2350 134,966.

--Tony Hoffman
Apr 11 2003 10:09:00 Xavier Leprette
xxx@xxx
Possible Kreutz comet in a real-time C2 now


The object is starting on 2003/04/11 at 11:26 UT
Very faint object, not sure

0,0 in top-left corner of 1024x1024 frames :

Time col, row
11:26 243,990
11:50 243,964
12:06 246,951
12:26 250,932

Xavier Leprette
Apr 11 2003 16:04:08 Derek Hammer
xxx@xxx
Hello, I cannot confirm any of the recent reports. Also, I really

appreciate it when a reporter sends a retraction after they
realize their claim is false. Thank you.

Derek
Apr 12 2003 00:25:31 Alton Danks
xxx@xxx
Lasco real time image, possible comet, Kreutz trajectory


198 19 20030412 0218 4351818 2.065E7
203 21 20030412 0242 4351842 2.040E7
206 25 20030412 0320 4351880 2.003E7

Possible tail in last image?

Apr 12 2003 14:06:38 Alton Danks
xxx@xxx
Doesn't appear on most recent Lasco C3 images. false alarm
Apr 12 2003 20:49:11 XingMing Zhou
xxx@xxx
Possible Kreutz comet in c2 images now. 

It's faint,with short tail.
0,0 in upper left corner

Images Size X, Y

20030412_2326_c2.gif 512 x 512 120, 507
20030412_2350_c2.gif 512 x 512 126, 493
20030413_0006_c2.gif 512 x 512 130, 486

Regards,
XingMing Zhou
Apr 12 2003 22:20:22 mike boschat
xxx@xxx
I can confirm the object reported

by XingMing Zhou in C2 at Apr 12 2003 20:49:11

Mike B.
Apr 13 2003 11:55:18 XingMing Zhou
xxx@xxx
Another possible Kreutz comet in c2 images now. 

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

Images Size X, Y

20030413_1106_c2.gif 512 x 512 92, 478
20030413_1126_c2.gif 512 x 512 96, 471
20030413_1150_c2.gif 512 x 512 101, 464
20030413_1206_c2.gif 512 x 512 104, 459?
20030413_1226_c2.gif 512 x 512 108, 452

Regards,
XingMing Zhou
Apr 13 2003 13:08:37 Sebastian Hönig
xxx@xxx
Contrary to Mike B's comment I cannot confirm any of the reported

comets by Xingming.
The first one doesn't appear in 1024 images of 23:26 and 00:26,
the others 2 images only show streaks with different shape and
brightness.

Regards,
Sebastian
Apr 14 2003 09:17:11 Nathan Minick
xxx@xxx
The comet was orbiting jupiter. It was a large streak that was a blue-ish color. even though it was smaller than jupiter its appearance was larger than usual do to it probably breaking from its orbit. I looked at charts on were the listed comets should be and didn't find a comet orbiting jupiter during the spring season.
Apr 14 2003 13:18:48 Derek Hammer
xxx@xxx
Hi,

I cannot confirm any of the recent reports.

Nathan, this page should only be used to report comets found in
SOHO/LASCO images. All other reports should be sent directly to
the CBAT. See their requirements before you send them a message...
they have strict reporting procedures.

Derek
Apr 14 2003 21:18:01 John Sachs
xxx@xxx
Possible   Sungrazer in  C3 images

Kreutz Trajectory
Positions: (0,0) upper left, 1024x1024
April 14 2003 (x, y)
20030415 0025 C3 395 791 Bw Real time 0,100 xy
20030414 2342 C3 390 697
update to follow
John
Apr 14 2003 21:33:28 John Sachs
xxx@xxx
Disregard my post below

of Apr 14 2003 21:18:01
This may be noise.
John
Apr 19 2003 17:38:18 mike boschat
xxx@xxx
Object in C3 @ 20030419_1718 UT


No new images in to
get more data.


****** NOTE ******
x-coordinates are probably correct,
but y-coordinates may be off by
several pixels.
0,460 in lower left corner

LASCO C3 IMAGES - 1024 x 1024

Date Time X Y
-------- ---- --- ---
20030419 1718 265 317
1742 271 316
1818 276 312
----------------
Michael Boschat
Apr 20 2003 15:32:50 mike boschat
xxx@xxx
DISREGARD MY REPORT OF:

Apr 19 2003 17:38:18

Looks like it was noise.

MB
Apr 21 2003 15:32:14 Scott Stevens
xxx@xxx
Comet, with tail, appears in C2 imagery beginning with the 13:31 4 April 2003 frame... in about the 10 o'clock position... and continues to move toward the right through the 22:26 4 April image.   A scan of previous 'finds' doesn't mention this particular time frame.
Apr 21 2003 16:04:23 Eli Zukowski
xxx@xxx
Possible Sungrazer, though the object is only

really clear in the last two frames.

Lasco C2 Image Size 512x512
Pt. X Y Date Time JulMins Height(km)
1 247 160 20030421 1424 4365504 1609254
2 243 116 20030421 1436 4365516 2371542
3 238 103 20030421 1448 4365528 2602932
4 224 62 20030421 1500 4365540 3336110

Object appears to follow a Kreutz Trajectory
But could possibly be debris or noise
Apr 21 2003 17:09:47 Maik Meyer
xxx@xxx
Scott,


this is SOHO 596 = C/2003 G3 (SOHO).

Eli,

this is noise. First, the speed is not consistent. Just calculate
the incremental velocities in x and y between the images. They
are not constant, but should be if real. Second, don't post if
you are not sure or even think that it could be debris or noise.

Kind regards, Maik
Apr 22 2003 18:04:01 John Sachs
xxx@xxx
Possible   Sungrazer in  C3 images

Kreutz Trajectory
Positions: (0,0) upper left, 1024x1024
April 22 2003 (x, y)
20030422 2022 C3 398 752
20030422 1942 C3 393 759
20030422 1842 C3 389 762
update to follow
John
Apr 22 2003 18:50:15 John Sachs
xxx@xxx
Disregard my post below

of Apr 22 2003 18:04:01
No object in next frame.
John
Apr 23 2003 11:43:05 XingMing Zhou
xxx@xxx
Possible Kreutz comet in c2 images. 

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

Images Size X, Y

20030423_0006_c2.gif 512 x 512 90, 493
20030423_0026_c2.gif 512 x 512 97, 485
20030423_0050_c2.gif 512 x 512 106, 476
20030423_0127_c2.gif 512 x 512 120, 462
20030423_0150_c2.gif 512 x 512 128, 453

Regards,
XingMing Zhou
Apr 23 2003 12:02:44 Maik Meyer
xxx@xxx
Confirmation of Xing-Ming's Kreutz comet.


Maik
Apr 24 2003 12:19:23 XingMing Zhou
xxx@xxx
Another Possible Kreutz comet in c2 images now(B/W). 

visble from 15:26 to 1606 today,middle bright.

XingMing
Apr 24 2003 12:24:34 XingMing Zhou
xxx@xxx
Another Possible Kreutz comet in c2 images now(B/W). 

visble from 15:26 to 16:06 today,middle bright,with tail.
0,0 in upper left corner

Images Size X, Y

20030424_2326_c2.gif 512 x 512 86, 506
20030424_2350_c2.gif 512 x 512 93, 499
20030424_0006_c2.gif 512 x 512 99, 493

XingMing Zhou
Apr 24 2003 12:28:10 XingMing Zhou
xxx@xxx
sorry again

Another Possible Kreutz comet in c2 images now(B/W).
visble from 15:26 to 16:06 today,middle bright,with tail.
0,0 in upper left corner

Images Size X, Y

20030424_1526_c2.gif 512 x 512 86, 506
20030424_1550_c2.gif 512 x 512 93, 499
20030424_1606_c2.gif 512 x 512 99, 493

XingMing Zhou
Apr 24 2003 12:37:20 Xavier Leprette
xxx@xxx
Possible Kreutz comet in a real-time C2 now


The object is starting on 2003/04/24 at 15:26 UT

0,0 in top-left corner of 512x512 B&W frames :

Time col, row
15:26 85,507
16:06 99,497
16:26 106,485

Xavier Leprette
Apr 24 2003 12:48:18 Xavier Leprette
xxx@xxx
Congrats Xing Ming, my report was about the same object.


Xavier
Apr 24 2003 13:18:37 mike boschat
xxx@xxx
Comet in C2 now at 20030424_1426 UT

between / and date

mor data folow

X Y
187, 437

Mike Boschat
Apr 24 2003 13:22:17 mike boschat
xxx@xxx
CORRECTION TIME OF Comet in C2 is 1550 UT


Comet coming between "/" and date
in 1606 just above the "2" in 24


****** NOTE ******
x-coordinates are probably correct,
but y-coordinates may be off by
several pixels.
0,460 in lower left corner
LASCO C2 IMAGES - 1024 x 1024

Date Time X Y
-------- ---- --- ---
20030424 1550 188 438
1606 198 425
----------------
Michael Boschat
Apr 24 2003 13:37:10 michael boschat
xxx@xxx
What is wrong with the form refresh?

I hit that 3 times and nothing about the
comet in C2 was there that is why I reported
it, now I see "new" data of it's discovery!

AGGHHHHHHH!!!!!!!!

Mike B.- fustrated!
Apr 25 2003 13:11:23 mike boschat
xxx@xxx
Possible Kruetz in C2 @ 20030425_1150 UT


Very faint! Object is
coming off the number "2" in the
date "25".
0,460 lower left corner on 1024 x 1024
images in C2.

Date UT X Y
-----------------------
20030425 1150 202 410
1206 208 402
1226 212 394
1250 220 383

Mike Boschat
Apr 25 2003 14:44:33 John Sachs
xxx@xxx
 Comet?


Positions: (0,0) upper left, 1024x1024
April 25 2003 (x, y)
20030425 C3 1442 407 335
20030425 C3 1418 411 340
20030425 C3 1342 417 348
20030425 C3 1242 426 362
update to follow
John
Apr 25 2003 14:51:53 John Sachs
xxx@xxx
This is a non Kreutz comet

that I reported below.
Diffused and bright Bright.
Just above the solar disk.
update position is in frame
20030425 C3 1218 431 367
John
Apr 25 2003 15:11:54 Maik Meyer
xxx@xxx
John,


this looks more like a separated part of the solar CME - velocity
and direction are the same. If you look at earlier images you'll
see that it originated from the CME.

Maik
Apr 25 2003 15:14:52 John Sachs
xxx@xxx
Maik,

I beleive you are a right on the
solar CME material being ejected.
Sorry,John
Apr 27 2003 13:29:52 Rainer Kracht
xxx@xxx
possible faint Meyer group comet in C2 images

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

Date Time x y
20030427 0906 82 214
20030427 0926 88 194
20030427 0950 96 170
20030427 1026 110 134
20030427 1050 120 110

Rainer
Apr 27 2003 13:59:20 Rainer Kracht
xxx@xxx
UPDATE faint Meyer group comet in C2 images

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

Date Time x y
20030427 0806 66 278
20030427 0826 70 256
20030427 0850 76 232
20030427 0906 82 214
20030427 0926 88 194
20030427 0950 96 170
20030427 1026 110 134
20030427 1050 120 110

Rainer
Apr 27 2003 16:14:37 Rob Matson
xxx@xxx
I can confirm Rainer's Meyer-group comet find in C2 today.

It's dim, but definitely there -- nice pickup, Rainer! -Rob
Apr 28 2003 04:07:44 Scarmato Toni
xxx@xxx
Possible faint comet in c3


positions 512x512 0,0 top-left corner

20030427-28

2318 150,326
2342 152,324
0018 156,322
0042 158,320


Regards,

Toni Scarmato

Apr 28 2003 15:29:17 Derek Hammer
xxx@xxx
Hello all,


Here are all of the confirmations since my last post...


SOHO# Observer Date Camera
------------------------------------------
597 X.-M. Zhou 03/04/22-23 C2
598 X.-M. Zhou 03/04/24 C2
599 R. Kracht 03/04/27 C2


Please email me if you have any questions.

Derek
Apr 28 2003 17:55:20 mike boschat
xxx@xxx
Object? - C2 - 20030428_1506 UT

Not sure if noise or not.
Very, very faint.
****** NOTE ******
x-coordinates are probably correct,
but y-coordinates may be off by
several pixels. 0,460 in lower left corner
LASCO C2 IMAGES - 1024 x 1024

Date Time X Y
-------- ---- --- ---
20030428 1506 221 408
1526 235 395
1650 245 383
1706 254 374
1726 261 363 ?
---------------
Michael Boschat
Apr 28 2003 22:38:14 Tony Hoffman
xxx@xxx
Possible comet in C2 on Kreutz track


(512 x 512, 0,0 in upper left corner)

20030429 0206 179,448
20030429 0127 157,464
[gap in images]
20030428 2326 119,508

Moderately bright with short tail
Awaiting further positions to confirm.

--Tony Hoffman
Apr 28 2003 22:52:29 Rob Matson
xxx@xxx
2003 Apr 28 -- Possible Kreutz comet in real-time C2 beginning at 23:26. 512x512 B&W coordinates (0,0 in upper left corner):


YYYY-MM-DD HH:MM Col Row
---------- ----- --- ---
2003-04-28 23:26 119 508
-----
04-29 02:06 169 448
02:26 176 439

Awaiting a fourth image... --Rob
Apr 28 2003 22:54:35 Rob Matson
xxx@xxx
I see Tony's report got in ahead of mine, so I think we're

tracking the same object. (Tony must have a typo in one of
his X-coordinates). --Rob
Apr 28 2003 23:04:50 Tony Hoffman
xxx@xxx
Rob, 

It looks like it is the same object; for 0206 I did have a typo:
It should have been
20030429 0206 170,448
As you note, it's also visible in 0226, and it's quite easy in the 0127 at 313,927 (large image, of course)

It may also be visible very faintly in C3 as follows (but it's iffy):

March 28

2142 475,577
2118 471,584
2042 467,590
2018 464,595

(all 1024)

--Tony

Apr 28 2003 23:14:46 Rob Matson
xxx@xxx
With a 4th frame, I can now safely confirm Tony's find:


2003-04-28 23:26 119 508
-----
04-29 02:06 169 448
02:26 176 439
02:50 184 429

I missed the 01:27 image -- was away from my computer for the
brief window that it was evidently available. Congrats to
Tony for his diligence in waiting for the first image after
23:26 to appear -- it has earned him what will likely be
SOHO-600! --Rob
Apr 29 2003 10:03:25 Rainer Kracht
xxx@xxx
possible Kreutz group comet in C2 images

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

Date Time x y
20030429 1226 492 1012
20030429 1250 504 992
20030429 1327 522 958

Rainer
Apr 29 2003 10:15:45 Xavier Leprette
xxx@xxx
Possible Kreutz comet in a real-time C2 now


The object is starting on 2003/04/29 at 12:26 UT

0,0 in top-left corner of 1024x1024 frames :

Time col, row
12:26 493,1014
12:50 505,993
13:27 523,960

Xavier Leprette
Apr 29 2003 10:36:52 Pavel Shkreby
xxx@xxx
Possible sungrazing comet in a real-time C2 images now.

Visible from 2003/04/29 12:26 UT in 3 consecutive frames.
Telescope - C2
Position in last images
Time X Y
12:26 - 493.1015
12:50 - 505.993
13:27 - 524.961
1024x1024 0.0 - upper left corner
----------
Pavel Shkreby
Apr 29 2003 10:59:44 Rainer Kracht
xxx@xxx
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       xxx@xxx 

UPDATE small Kreutz group comet in C2 images
b/w 512*512 from the LASCO website
enlarged to 1024*1024
0,0 in upper left corner

Date Time x y
20030429 1226 492 1012
20030429 1250 504 992
20030429 1327 522 958
20030429 1350 534 938
20030429 1406 542 924
20030429 1426 552 904

Rainer
Apr 29 2003 15:03:43 Derek Hammer
xxx@xxx
Hello, 


Congratulations to Tony, it has been some time since your last
discovery but it came on a good number...600! I can also confirm
Rainer's report.

Finding more than 600 comets is an impressive accomplishment for
all of you and the SOHO/LASCO team...especially when considering
that SOHO is a solar mission and that internet comet reporting was
initiated as a public relations venture. Your accomplishments are
truly outstanding. Congrats!


SOHO# Observer Date Camera
-------------------------------------------
600 T. Hoffman 03/04/28-29 C2
601 R. Kracht 03/04/29 C2


Derek
Apr 29 2003 18:03:10 Rob Matson
xxx@xxx
2003 Apr 29 -- Possible non-group comet in real-time C3 beginning at

19:42. The motion is consistent, but more frames are needed as the
object is dim. 1024x1024 coordinates (0,0 in upper left corner):

YYYY-MM-DD HH:MM Col Row
---------- ----- --- ---
2003-04-29 19:42 422 689
20:18 424 682.5
20:42 425 678
21:18 427 672

--Rob
Apr 30 2003 10:28:14 Rainer Kracht
xxx@xxx
possible non group comet in C2 images

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

Date Time x y
20030430 0727 906 392
20030430 0750 912 380
20030430 0806 916 372
20030430 0826 920 364

Rainer
Apr 30 2003 10:50:04 Rainer Kracht
xxx@xxx
UPDATE non group comet in C2 images

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

Date Time x y
20030430 0550 874 442
20030430 0606 880 432
20030430 0626 888 422
20030430 0650 894 410
20030430 0727 906 392
20030430 0750 912 380
20030430 0806 916 372
20030430 0826 920 364
20030430 0850 924 352
20030430 0906 926 346
20030430 0926 930 336

Rainer
Apr 30 2003 11:30:56 Maik Meyer
xxx@xxx
Congrats to Rainer for this nice non-group comet. I wonder if it

is related to Rob's claim some hours earlier (although I was not
able to verify it without doubts).

Kind regards, Maik
Apr 30 2003 11:52:32 Rainer Kracht
xxx@xxx
There is a trailing component visible

in the images of the non-group comet
from 0526,0550,0606 UTC.
It's two pixels to the left and
three pixels below the main component
and appears clearly seperated.

Rainer
Apr 30 2003 12:09:05 Rainer Kracht
xxx@xxx
Positions for the trailing object

Date Time x y
20030430 0450 850 476
20030430 0506 857 468 (noisy image)
20030430 0526 864 457
20030430 0550 873 445
20030430 0606 879 436
20030430 0626 886 425
20030430 0650 893 413
20030430 0727 905 395
20030430 0750 911 384

Rainer
Apr 30 2003 13:34:19 mike boschat
xxx@xxx
Yes, the comet appears

"double" but it should be
counted as 1 comet not 2.

MB
Apr 30 2003 15:17:30 Rob Matson
xxx@xxx
Congrats, Rainer, on your non-group find!  Maik wondered if it

might be related to my (questionable) C3 post of yesterday. Now
that preceding C3 frames are available, I don't see anything
above noise-level at the extrapolated positions, so I would
consider my claim doubtful at best.

At first I was excited by the timing and general direction of
Rainer's find in C2, but a few "back of the envelope" calculations
show that Rainer's comet comes earlier than mine would have in C2
at his positions, and the track of mine would have been well left
of Rainer's. An amusing coincidence, but I don't think there's
anything more to it than that. --Rob