SOHO-LASCO Comet Reports for 200302

Feb 02 2003 11:09:58 Scarmato Toni
toniscarmato@libero.it
Dear all,

my partecipation at the pain for the tragedy of the Shuttle.


Possible comet in c3

positions 512x512 0,0 top-left

20030202

1400 169,312
1415 171,310
1430 173,310
1445 175,312


Regards,

Toni Scarmato
Feb 02 2003 11:17:01 Scarmato Toni
toniscarmato@libero.it
Nothing at 1500 regarding my last report.

Only noise.

Toni Scarmato
Feb 03 2003 17:28:17 Xavier Leprette
xavier.leprette@wanadoo.fr
Possible Kreutz comet in a real-time C3 images now.


It is visible in 4 consecutive images of 2003/02/03

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

col, row
20:00 142,331
20:15 143,330
20:30 144,329
20:45 145,328

Xavier Leprette
Feb 03 2003 17:44:31 mike boschat
mboschat@eastlink.ca
Can confirm Xavier Leprette's comet.

It's there also at 2115 UT.

Mike B.
Feb 03 2003 17:51:01 Xavier Leprette
xavier.leprette@wanadoo.fr
Possible Kreutz comet in a real-time C3 images now.

UPDATE : very tiny comet

It is visible (at least) in 7 consecutive images of 2003/02/03

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

col, row
19:30 140,333
19:45 141,332
20:00 142,331
20:15 143,330
20:30 144,329
20:45 145,328
21:15 ...

Xavier Leprette
Feb 03 2003 18:50:38 mike boschat
mboschat@eastlink.ca
Is this a NEW comet or the

same one reported earlier I confirmed
for Xavier??

mabey one post with
4 XY's is enough than updates!

MB
Feb 04 2003 05:00:43 Xavier Leprette
xavier.leprette@wanadoo.fr
OK Mike, my second report was an update for the same comet. I have not seen your confirmation.

Regards - Xavier
Feb 04 2003 20:41:29 Rob Matson
matsonr@saic.com
2003 Feb 5 -- Possible non-group comet in real-time C2 beginning at

00:30. 512x512 B&W coordinates (0,0 in upper left corner):

YYYY-MM-DD HH:MM Col Row
---------- ----- --- ---
2003-02-05 00:30 508 307
00:54 497 311
01:31 481 314

Possibly related to C/2002 Q9? It's fading fast, though. Will
look for it in C3.

--Rob
Feb 04 2003 21:08:24 Rob Matson
matsonr@saic.com
Update to 20:41:29 post:  nothing seen in 01:54 B&W C2 frame

at the extrapolated position, so it was either noise or
unconfirmable. Same result either way. --Rob
Feb 05 2003 14:51:01 Mimeev Alexander
alexpm@imail.ru
c3 top/left 1024 20030205


1142 442 651
1118 443 653
1042 444 654
1020 445 655
0942 447 656

A. M.
Feb 05 2003 16:08:32 David Evans
dave.nokia3330@orange.net
Possible Kreutz in C3 images earlier today 2003/02/05


Very small and faint

1024x1024 gifs. 0,0 Top Left

03:42 351, 609
04:18 358, 603
04:42 362, 599
05:18 369, 592
05:42 373, 588

- Dave
Feb 06 2003 09:31:43 Derek Hammer
derek@sungrazer.nascom.nasa.gov
Hello, I can confirm the dim Kreutz comet reported by 

X. Leprette. It was visible only in C3 (some rough positions
are below) and is SOHO583. I could not confirm anything real for
the other reports.


#COMMENT: SOHO583
# HEIGHT DATE TIME ANGLE TEL FC COL ROW
16.06 2003/02/03 20:30:07 126.2 C3 10 289.0 364.0
15.95 2003/02/03 20:45:06 126.0 C3 10 290.0 366.0
15.51 2003/02/03 21:15:06 125.9 C3 10 296.0 371.0
14.50 2003/02/03 22:30:56 125.4 C3 10 309.0 383.0
14.01 2003/02/03 23:15:14 125.4 C3 10 316.0 388.0
13.82 2003/02/03 23:30:36 125.1 C3 10 318.0 391.0
12.65 2003/02/04 00:55:36 124.8 C3 10 334.0 404.0
12.05 2003/02/04 01:41:21 124.4 C3 10 342.0 411.0
11.58 2003/02/04 02:14:46 124.0 C3 10 348.0 417.0
11.17 2003/02/04 02:42:05 124.0 C3 10 354.0 421.0
10.65 2003/02/04 03:18:05 123.7 C3 10 361.0 427.0
10.31 2003/02/04 03:42:05 123.1 C3 10 365.0 432.0
9.74 2003/02/04 04:18:05 122.9 C3 10 373.0 438.0


Derek
Feb 08 2003 20:43:57 Sergey Shurpakov Sergey Shurpakov
shurpakov@tut.by
Date: Feb 9, 2003 

Possible comet in image C3.

Brief description:
0,0 in upper left corner
1024x1024


Time (x,y)
20030207_18:42 502,406
20030207_18:18 503,402
20030207_17:42 506,395
20030207_17:18 506,388


Regards,Sergey Shurpakov
Feb 09 2003 11:29:26 David Evans
dave.nokia3330@orange.net
Possible comet in C3 images of 2003/03/08


512x512 Lasco B/W 0,0 Top Left

object begins at position
11:18 48, 385

visible in subsequent frames



Update to follow soon...

- Dave
Feb 09 2003 11:34:27 David Evans
dave.nokia3330@orange.net
Update to my report of possible comet in C3 images of 2003/03/08


512x512 Lasco B/W 0,0 Top Left

10:23 43, 388
10:44 44, 387
11:18 47, 385
11:42 49, 384
12:18 51, 382


- Dave
Feb 09 2003 11:47:08 Xavier Leprette
xavier.leprette@wanadoo.fr
Possible Kreutz comet in a real-time C3 images now.


It is visible in 3 consecutive images of 2003/02/08

0,0 in top-left corner of 512x512 frames (BW images) :

col, row
14:42 60,372
15:18
15:42

More positions soon

Xavier Leprette
Feb 09 2003 11:47:42 David Evans
dave.nokia3330@orange.net
The real-time object is now a definite Kreutz comet in C3 images

of 2003/03/08

Moderately bright but with no tail visible as yet in the B/W
images...

- Dave
Feb 09 2003 11:54:31 Xavier Leprette
xavier.leprette@wanadoo.fr
Congrats Dave , my previous report was about the same comet

Xavier Leprette
Feb 09 2003 12:05:41 John Sachs
imagephoto@blazenet.net
 Possible Sungrazer in  C3 images 

Positions: (0,0) upper left, 1024x1024
Black and white converted 1624 converted
20030209 1842 C3 155 819
20030209 1818 C3 153 821
20030209 1742 C3 143 827
More positions soon.
John
Feb 09 2003 12:10:01 John Sachs
imagephoto@blazenet.net
Ignore my post. I see that Dave

reported the comettoday. Congrats Dave :)
John
Feb 09 2003 12:14:04 David Evans
dave.nokia3330@orange.net
I just realised that my date is incorrect for my real-time comet

report for the Kreutz visible in current C3 B/W images.

It should of course read 2003/02/08 and obviously not 2003/03/08
as mentioned in my previous reports...

Apollogies...

- Dave
Feb 09 2003 12:47:37 michael boschat
mboschat@eastlink.ca
Possible comet in C3 images - 20030208_0642 UT


Comet coming off lower left field
of C3 image.

****** 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

YYYY-MM-DD HH:MM X Y
---------- ----- --- ---
2003-02-08 0642 57 238
0742 65 232
0842 73 225

----------------
Michael Boschat
Feb 09 2003 14:01:02 David Evans
dave.nokia3330@orange.net
The C3 Kreutz comet I found today (Re Report of Feb 09 2003

11:29:26) has entered the C2 field of view (18:30 image).

- Dave
Feb 09 2003 15:22:32 mike boschat
mboschat@eastlink.ca
DISREGARD MY POST OF Feb 09 2003 12:47:37


This was dave's comet that started out at 0642UT
on the 8th!

M
Feb 10 2003 02:07:21 Jeff Koehler
jkoehler1@wi.rr.com
I was watching the LASCOC3 images covering the last several days.

A small bright spot appeared in the lower left corner around 15:00
on 02/08/03. It moved quickly toward the sun, and I think it
developed a tail near 12:00 on 02/09/03. The spot appeared to
evaporate around 18:00 on 02/09/03! Has this been confirmed as a
new sungrazer? How cool!

Is it at all unusual to have so many comets fly so near the sun,
even into the sun, in such a small span of time? In just a few
weeks of each other, three comets will pass close to the sun, and
for all I know there have even been more than three.

Thank you,
Jeff Koehler
South Milwaukee, WI
Feb 10 2003 10:22:26 Tony Hoffman
tonyhoffman@earthlink.net
Hi, Jeff--


Yes, that was a real sungrazing comet, first reported by David
Evans on February 09, 2003 11:29:26. If you want to hunt for
comets, you should learn to measure coordinates so you can check
against reports yourself. We have a discussion group at
http://groups.yahoo.com/group/sohohunter/ that you can go to with
any questions.

To date, 584 SOHO comets have been found, going back to January
1996; that averages to one every 4.3 days. Most of them are quite
faint, but occasionally a few bright ones will be seen in succession.

Regards,
Tony Hoffman
Feb 10 2003 10:37:27 mike boschat
mboschat@eastlink.ca
Possible fragment from comet of 

20030209_1830 UT in C2 images.

Magnifying the images I
seem to note a fragment
behind the main part.

****** 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

YYYY-MM-DD HH:MM X Y
---------- ----- --- ---
2003-02-09 1830 20 137
1854 48 122
1931 101 88
1954 134 71
2006 155 57
2030 199 35
----------------
Michael Boschat
Feb 10 2003 12:00:42 Rainer Kracht
R.Kracht@t-online.de
possible Kreutz group comet in C3 images

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

Date Time x y
20030210 1442 282 628
20030210 1518 288 624
20030210 1612 298 616

Rainer
Feb 10 2003 12:44:17 Rainer Kracht
R.Kracht@t-online.de
UPDATE Kreutz group comet in C3 images

it's visible in 1024 * 1024 also
0,0 in upper left corner

Date Time x y
20030210 1442 282 629
20030210 1518 289 624
20030210 1542 (copy of 1518 image)
20030210 1612 299 616
20030210 1642 305 612
small comet

Rainer
Feb 10 2003 14:53:21 Rob Matson
matsonr@saic.com
I can confirm Rainer's C3 Kreutz find -- nice pick-up! --Rob
Feb 10 2003 21:15:10 mike boschat
mboschat@eastlink.ca
Possible comet in C3 images - 20030210_2318 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
-------- ---- --- ---
20030210 2318 207 172
20030210 2342 214 165
20030211 0018 220 161
20030211 0042 226 156

----------------
Michael Boschat
Feb 12 2003 15:37:11 Derek Hammer
derek@sungrazer.nascom.nasa.gov
Hello, there are 2 more Kreutz comets to cofirm...one extremely 

bright (SOHO 584) and one extremely dim (SOHO585).


SOHO# Discoverer Date Camera
------------------------------------------
584 D. Evans 03/02/08-09 C2,C3
585 R. Kracht 03/02/10 C3


We have made initial plans to observe C/2002 V1 (NEAT).
One problem is that if the comet does indeed reach the C3 FOV at
the predicted magnitude [~0 initially, ~-1 at perihelion], we are
not going to have any unsaturated images in the clear filter. The
reason is that there is a minimum of ~3 seconds for the exposure,
which is too long for this comet. However, we are discussing the
possibility of manually operating the shutter which allows us to
take much shorter exposures. So, if V1 enters C3 at the predicted
magnitude on Sunday do not expect to see many clear filter images.
We'll probably replace them with orange filter observations. Also,
we're toying with the idea of ocassionally adding an H-alpha
filter image. This is all in addition to short & long red and blue
filter images once per hour (tail observations). Within hours of
perihelion, we're dumping the long exposures, and will take color
sequences using all the filters for photometrty purposes. Of
course, at least once per hour, we'll have the typical 20 second
exposure, C3 image. Too much info? Just thought I would prepare
everyone.

Derek
Feb 12 2003 16:41:19 Rob Matson
matsonr@saic.com
2003 Feb 12 -- Dim Kreutz comet in real-time C3 beginning at 16:42.

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

YYYY-MM-DD HH:MM Col Row
---------- ----- --- ---
2003-02-12 16:42 276 619
17:18 283 614
17:42 288 612 (coincides w/star)
18:18 295 607
18:42 300 604

--Rob
Feb 13 2003 01:22:59 David Evans
dave.nokia3330@orange.net
Possible small Kreutz in recent C3 images of 2003/02/08


05:18 303, 620
05:42 307, 616
06:18 314, 611
06:42 318, 608
07:42 330, 599
08:42 341, 591
09:42 353, 581
10:23 362, 574
10:44 369, 568
11:18 377, 560

- Dave
Feb 13 2003 18:15:08 John Sachs
imagephoto@blazenet.net
 Possible Sungrazer in  C3 images

Very faint point.
Positions: (0,0) upper left, 1024x1024
Febuary 13 2003 (x, y)
20030213 2218 C3 265 631
20030213 2142 C3 259 636
20030213 2119 C3 255 640
20030213 2042 C3 249 643
John
Feb 13 2003 18:41:10 David Evans
dave.nokia3330@orange.net
Confirmation of real-time C3 Kreutz...


5th position can be seen in 23:18 B/W Lasco image.

Congrats John,

- Dave
Feb 13 2003 23:04:52 Carey Johnson
quarkcsj
I stumbled upon a new comet while downloading images for an animation of SOHO C3 images from Comet X5 transit thru Comet V1 transit.  While animating these images in my screensaver I noticed another comet.  I quickly sent an e-mail to cbat@cfa.harvard.edu on Feb. 10th to report this.  I have not heard anything and have not seen anything posted on this comet.  It is not comet X5 or V1 or SOHO B1.  It is visible in SOHO C3 images 20030208_0942 thru 20030209_1818.  I'm sorry I have not found anywhere yet to explain the x,y pixel co-ordinates used to report these, but this comet comes in from the left at about the 8:00 position and heads straight into the sun.


Carey S. Johnson
Amarillo, Texas
Feb 13 2003 23:10:47 Carey Johnson
quarkcsj@hotmail.com
Ooops, sorry for wrapped text on previous post.


Carey
Feb 13 2003 23:41:38 Heiner Otterstedt
heiner@otterstedt.de
Possible comet in LASCO C3 images


Date: Friday, February 14, 2003

Brief description:
Faint comet, small tail visible
Positions: 1024x1024 images, (0,0) upper left

yyyy.mm.dd hh:mm x y
---------- ----- --- ---
2003.02.14 02:42 315 596
2003.02.14 02:18 310 600
2003.02.14 01:42 303 604
2003.02.14 00:42 292 613

Regards,
Heiner Otterstedt

Feb 14 2003 00:09:11 Heiner Otterstedt
heiner@otterstedt.de
Sorry about my previous post,

that was just another confirmation of Johns find!
Congrats John!

Regards, Heiner
Feb 14 2003 13:07:07 Derek Hammer
derek@sungrazer.nascom.nasa.gov
Hello, I can only confirm John's C3 Kreutz claim. Some rough

positions are below.
Carey, that comet was claimed by Dave Evans on Feb 9th. It is
listed in the table, from my last red post, as SOHO584. It will
not receive an official IAU designation until I submit all
measured positions to CBAT.


SOHO# Discoverer Date Camera
------------------------------------------
586 J. Sachs 03/02/13-14 C3


#COMMENT: SOHO586
# HEIGHT DATE TIME ANGLE TEL FC COL ROW
16.38 2003/02/13 22:18:05 118.9 C3 10 265.0 392.0
15.60 2003/02/13 23:18:13 118.5 C3 10 276.0 400.0
15.30 2003/02/13 23:42:05 118.7 C3 10 281.0 402.0
14.86 2003/02/14 00:18:05 118.3 C3 10 287.0 407.0
14.58 2003/02/14 00:42:06 118.2 C3 10 291.0 410.0
13.76 2003/02/14 01:42:05 117.9 C3 10 303.0 418.0
13.27 2003/02/14 02:18:07 117.6 C3 10 310.0 423.0
12.92 2003/02/14 02:42:05 117.3 C3 10 315.0 427.0
12.43 2003/02/14 03:18:05 117.0 C3 10 322.0 432.0
12.15 2003/02/14 03:42:05 116.8 C3 10 326.0 435.0
11.62 2003/02/14 04:18:05 116.5 C3 10 334.0 440.0
11.29 2003/02/14 04:42:05 115.8 C3 10 338.0 445.0
10.73 2003/02/14 05:18:06 115.9 C3 10 347.0 449.0
10.33 2003/02/14 05:42:05 115.6 C3 10 353.0 453.0
9.80 2003/02/14 06:18:05 115.2 C3 10 361.0 458.0
8.46 2003/02/14 07:42:05 114.0 C3 10 381.0 471.0



Feb 14 2003 16:58:57 David Johnson
dej257@worldnet.att.net
Possibly 2 comets found in today's images, 1024x1024, with 0,0 at upper left.  One appears to be trailing the other.  They're very faint.


Leading comet:

20030214_2018_c3.gif - 415,753
20030214_1942_c3.gif - 414,757
20030214_1837_c3.gif - 415,765

Trailing:

20030214_2018_c3.gif - 412,763
20030214_1942_c3.gif - 412,767
20030214_1837_c3.gif - 413,773

Dave Johnson
Feb 14 2003 17:09:05 David Johnson
dej257@worldnet.att.net
I have a 4th position to add to my report


Leading comet:

20030214_2042_c3.gif - 415,749

Trailing comet:
20030214_2042_c3.gif - 412,760

Dave Johnson
Feb 14 2003 18:24:41 David Evans
dave.nokia3330@orange.net
Posible comet in real-time C3 images of 2003/02/14


20:18 163, 687
20:42 166, 685
21:18 171, 682
21:42 174, 680

Very small and faint at present. Could be noise - awaiting
further images. Please disregard if no update.

- Dave
Feb 15 2003 14:24:35 John Sachs
imagephoto@blazenet.net
Possible Sungrazer in  C3 images

Very faint fuzzy point. Something
appears to be moving here.
Positions: (0,0) upper left, 1024x1024
Febuary 15 2003 (x, y)
20030215 1818 C3 127 755
20030215 1742 C3 121 758
20030215 1718 C3 118 760
20030215 1642 C3 114 765
20030215 1618 C3 109 567
John
Feb 15 2003 15:15:51 John Sachs
imagephoto@blazenet.net
Kreutz Comet I reported below is 

also visible at 20030215 1842 C3 131 751
and visible in the real time in Frame 1942.
John
Feb 15 2003 20:26:15 mike boschat
mboschat@eastlink.ca
Comet in C3 @ 20030215_2142 UT


More data to come

****** 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
-------- ---- --- ---
20030215 2142 157, 171

----------------
Michael Boschat
Feb 15 2003 20:34:18 mike boschat
mboschat@eastlink.ca
UPDATE: Comet in C3 @ 20030215_2142 UT


It begins above a med star in lower
left about 1/4 way up. Med bright
comet. There are 3 stars almost
in a line which would point close
to the star in question.

****** 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
-------- ---- --- ---
20030215 2142 157 171
2218 162 168
2318 170 160
2342 174 157
----------------
Michael Boschat
Feb 15 2003 22:24:32 Tony Hoffman
tonyhoffman@earthlink.net
Comet in C3, 1024 x 1024 , 0,0 upper left

Feb. 16, 0142 192,703
more positions to follow

Tony Hoffman
Feb 15 2003 22:29:26 mike boschat
mboschat@eastlink.ca
DISREGARD MY LAST 2 POSTS OF:

Feb 15 2003 20:34:18
Feb 15 2003 20:26:15

I believe this is John Sachs find from
earlier today about 1618 UT and I could
not see it until I downloaded ALL the images
from 1618 to present then looping
back it seems to go right back to the lower left
almost to frame edge, and BOY it's faint and even
using the 1024 I never saw it..sooo I guess crapolla
outta luck on this one.

Mike Boschat
Feb 15 2003 22:32:46 Tony Hoffman
tonyhoffman@earthlink.net
Possible comet in C3 on Kreutz track

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

Feb. 16
0142 192,703
0042 183,710
0018 180,713
Feb. 15
2342 175,717
2318 170,720


Brightening.

--Tony Hoffman
Feb 15 2003 22:33:05 mike boschat
mboschat@eastlink.ca
Tony this is John Sachs find of today!


Mike Boschat
Feb 16 2003 11:10:31 XingMing Zhou
zh_x_m@163.net
C/2002 V1 enter the C3 field(B/W)úČ

0,0 in upper left corner(512 X 512).

15:33 (280,0?)
15:45 (281,0?)
15:54 (282,0)(bright)
16:06 (283,0)(bright)

Regards, XingMing Zhou
Feb 17 2003 03:52:04 Vishnu Reddy
vreddy@spaceguardindia.com
Dear Sir,


I am Vishnu Vardhan from India. I am new to SOHO Comet
hunting and want to report a possible suspect in C2
images. I am not sure if it is a real or a known
object but do check it and advice me if I am wrong.

Possible comet in C2

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

Feb. 16 images
20030216_1354 302,213
20030216_1331 298,213
20030216_1254 290,213

Clear skies
Vishnu Vardhan
Spceguard India
www.spaceguardindia.com
Feb 17 2003 05:17:27 Maik Meyer
maik@comethunter.de
Vishnu,


this is simply a star. Stars move vertically in the SOHO/LASCO
images. You'll find a lot of them in C3 and C2.

Maik
Feb 17 2003 05:17:47 Maik Meyer
maik@comethunter.de
Vishnu,


this is simply a star. Stars move horizontally in the SOHO/LASCO
images. You'll find a lot of them in C3 and C2.

Maik
Feb 17 2003 12:40:46 Shumuk Vic
cellix@knology.net
I was curious what the apparent object visible in 20030215_2042_c3.gif is - debris?
Feb 17 2003 16:20:37 Brian Leahy
slap-shot74@cox.net
I'm curious as to the object that enters the image from the top-right and continues downward?


first seen: 20030216_1754_c3.gif
through: 20030217_1854_c3.gif (current image as I write this).

Thanks,
Brian
Omaha, NE
Feb 17 2003 17:01:49 Brian Leahy
slap-shot74@cox.net
Disregard my last post, please - I figured it out.  I'm new...can you tell?  :-)


Brian
Feb 17 2003 23:31:40 Donn Appleby
dappleby@cfl.rr.com
I see the object as reported in C3 realtime imaging for 02/17/2003 and am quite alarmed.  I've witnessed quite a few comets, however, this is something very special.  What do you experts have to say?

Donn Appleby
dappleby@cfl.rr.com
Feb 18 2003 00:17:44 Heiner Otterstedt
heiner@otterstedt.de
Possible comet in LASCO C3 images


Date: Tuesday, February 18, 2003

Brief description:
Faint comet
Positions: 1024x1024 images, (0,0) upper left

yyyy.mm.dd hh:mm x y
---------- ----- --- ---
2003.02.18 00:54 63 798
2003.02.18 01:54 70 797
2003.02.18 02:54 75 795
2003.02.18 03:54 78 793

Regards,
Heiner Otterstedt
Feb 18 2003 01:26:50 Maik Meyer
maik@comethunter.de
Heiner,


what you have reported is a mix of noise and a star. Your first
three positions are just a chance alignment of noise and the
fourth position is the star coming from the left.

Donn,

this is C/2002 V1 (NEAT) a widely ground-based observed comet
since November 2002.

Shumuk,

yes, this seems to be debris. Cf. http://lasco-www.nrl.navy.mil/debris_gif/

Maik
Feb 18 2003 05:48:53 Alan Fitzsimmons
a.fitzsimmons@qub.ac.uk
Hi,


I was just looking at the C3 sequences of C/2002 V1 for my astronomy class, when I noticed a sungrazer going in. It's
visible on 22 frames on the current C3 java sequence, and would
have been visible previous to this. I'm sure other people have spotted it, but thought I would report it any way. The
output from the Java position tool is below. This is much
easier than our astrometry software for our asteroid searches!

Best Wishes
Alan Fitzsimmons

Point X Y YYYYMMDD HHMM Julmins Height(km)
0 211 331 20030216 0342 4272702 1.489E7
1 217 335 20030216 0418 4272738 1.460E7
2 227 342 20030216 0518 4272798 1.410E7
3 231 345 20030216 0542 4272822 1.390E7
4 237 349 20030216 0618 4272858 1.361E7
5 241 352 20030216 0642 4272882 1.341E7
6 251 360 20030216 0742 4272942 1.289E7
7 257 365 20030216 0818 4272978 1.258E7
8 261 368 20030216 0842 4273002 1.237E7
9 268 372 20030216 0918 4273038 1.205E7
10 272 375 20030216 0942 4273062 1.184E7
11 279 381 20030216 1023 4273103 1.147E7
12 283 384 20030216 1045 4273125 1.127E7
13 289 389 20030216 1118 4273158 1.096E7
14 293 391 20030216 1142 4273182 1.078E7
15 300 397 20030216 1218 4273218 1.041E7
16 304 400 20030216 1242 4273242 1.020E7
17 316 408 20030216 1342 4273302 9623142
18 330 419 20030216 1454 4273374 8905478
19 342 427 20030216 1554 4273434 8320623
20 356 436 20030216 1654 4273494 7645315
21 370 446 20030216 1754 4273554 6949600
22 383 456 20030216 1854 4273614 6289855
Feb 18 2003 07:00:20 Alan Fitzsimmons
a.fitzsimmons@qub.ac.uk
Dear All,


Just found the recent reports summary page, and the comet
I reported is obviously the one identified by Tony Hoffman
on Feb 15 2003 22:32:46 (my images were 1024x1024, with
(0,0) in lower left corner). My apologies for taking up your
time.

Best Wishes
Alan

Feb 18 2003 08:30:38 Michal Drahus
traktor@v-lo.krakow.pl
Hello!

-----------------------
telescope: C2
image size: 512x512
(0,0): top-left
coords precise to: 2px
date:
-----------------------

Regards,

Michal Drahus (Krakow, Poland)
traktor@v-lo.krakow.pl
Feb 18 2003 08:32:11 Michal Drahus
traktor@v-lo.krakow.pl
Sorry! It was my programme's mistake! Please ignore it :)
Feb 18 2003 10:17:10 Kevin Foran
foran.kl@forces.ca
C/2002 V1 (NEAT) question: Why isn't there a pronounced double

tail at this point?
Feb 18 2003 10:19:36 Derek Hammer
derek@sungrazer.nascom.nasa.gov
I have not had a chance to confirm any sungrazer reports since

my last red post, although it looks like John's claim was
confirmed by a few people. The reason is that a rather severe
snow storm has crippled most of the city for the past few days,
preventing me from going to work. It has also prevented us
from altering any of the C/2002 V1 comet observing sequence. So
if the short exposures are saturated we're out of luck until
tomorrow. Well, it has certainly gained much attention from
several amateurs based on reports to this page...that's always
nice to see. I do thank the more experienced SOHO comet hunters
for responding quickly to some of the claims that have been made.

Well, hopefully that CME on the solar north-west limb from
earlier today will strike the comet...that's something that has
certainly never been imaged before. By the way, this comet is by
far the brightest comet SOHO has observed. It should reach a
magnitude of ~ -2 .....the previous record holder was the Macholz
comet from January, 2002 which peaked at about -0.5...Hyakutake
peaked at about 1.
Feb 19 2003 09:52:44 mike boschat
mboschat@eastlink.ca
Possible comet in C3 images - 20030218_2254 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
-------- ---- --- ---
20030218 2254 265 77
20030219 0054 272 76
0154 279 71
0254 286 68
----------------
Michael Boschat
Feb 19 2003 11:11:27 Debbie Kinloch
parrotfarm@on.aibn.com
Lasco C3 image; MPEG (512 x 512)

frame 2003/02/15 20:42
upper left quadrant
only visible for one frame on my system
large, bright

Sorry, I don't know how to do coordinates yet.



Feb 19 2003 14:19:37 mike boschat
mboschat@eastlink.ca
DISREGARD MY POST OF
Feb 19 2003 09:52:44

M.B.
Feb 19 2003 15:13:42 Captain Doofus
dapossdog@yahoo.com
C2 image

Center portion
Large bright ball of light
Possibly hydrogen reaction
Makes grass grow.

what is it!?
Feb 20 2003 07:50:08 Carey Johnson
quarkcsj@hotmail.com
Michael Boschat,


If you have 0,460 in lower left corner, What do you have in the
upper right corner? 1024,-564?

Debbie Kinloch,

I recently had the same problem of not knowing how to report in
coordinates. You can download XnView freeware at http://www.xnview.com/
Once you get it and install it, goto View and select Display Color Information.
Your cursor will turn into an eyedropper and a small box next to
it will display the x,y coordinates for the pixel you're on. Or
in my case I already had Adobe Photoshop 4.0 but was not aware
of a feature. Under Window, select Show Info and a box will
display x,y coordinates and color info for the pixel you're on.
I prefer the cursor on Adobe, if for your tools you select
Line Tool then you get a nice small cross-hair instead of an
eyedropper.

It would be helpful if this help would be provided on this webpage
for people like you and I.

Carey
Feb 20 2003 12:29:59 David Evans
dave.nokia3330@orange.net
---------------------------------------------------------------


Hi Debbie and Carey,
...and anyone new to Soho comets.

Discussions of the kind you raise should not be posted to the
Finders Page... This page is purely for reports of possible
discoveries only! Having to sift through general discussions to
get to the actual reports not only makes Derek's job more
difficult but also prevents fast access by observers to see if
anyone else has previously posted a similar claim.

Sometimes a comment or two is justified on this page, if highly
topical concerning a current claim for instance, but in general
all other comments should be posted to the sohohunter club site
message board. This can be found at -

http://groups.yahoo.com/group/sohohunter/

Indeed, much information can be found at the club site and
perhaps you would both like to actively participate and also
contribute to its discussions. Anyone new to soho comets will
find help there in abundance. All are made welcome... Indeed
anyone with even the slightest interest in soho comets would
benefit if they took a few moments to follow the above link
and join.

Kindest regards to you both and best wishes with your searches,

- Dave

---------------------------------------------------------------

Feb 20 2003 14:57:59 John Sachs
imagephoto@blazenet.net
Possible Sungrazer in  C3 images

Kreutz Trajectory Very Faint
May be noise
Positions: (0,0) upper left, 1024x1024
Febuary 20 2003 (x, y)
20030220 1842 C3 133 780
20030220 1818 C3 129 785
20030220 1742 C3 124 788
20030220 1718 C3 119 793
John
Feb 20 2003 16:20:31 Derek Hammer
derek@sungrazer.nascom.nasa.gov
Hello, that was an impressive showing from C/2002 V1 (NEAT). There

are several interesting events that occurred throughout its path
so I am looking forward to the data analysis. However, I have not
forgotten about the sungrazers. Obviously, John Sachs comet
from Feb 16 in C3 is real, and should make a decent movie as
it was visible during NEAT. This is SOHO 587. I have not looked
at John's most recent claim...I usually wait until at least 10
images are in before I decide on a C3 comet. All other claims
have been checked and were not confirmed.

Dave, I still owe you an explanation for why I decided against a C3
claim you made a week(s) ago. I have not forgotten and will let
you know tomorrow.

Derek
Feb 20 2003 20:59:18 mike boschat
mboschat@eastlink.ca
Hi:


What's that image in the C3 2342 UT
image?
A ghost reflection of the CME?

Mike
Feb 20 2003 22:32:49 John Sachs
imagephoto@blazenet.net
Concerning my post below of

Feb 20 2003 14:57:59.
Kreutz C3 Comet.
Disregard.Lost it in noise.
John

Feb 21 2003 11:13:25 John Sachs
imagephoto@blazenet.net
Possible Sungrazer in  C3 images

Kreutz Trajectory Very Faint Fuzzy
Is this possible what I reported Yesterday?
Positions: (0,0) upper left, 1024x1024
Febuary 21 2003 (x, y)
20030221 1242 C3 307 618
20030221 1218 C3 303 620
20030221 1142 C3 299 624
20030221 1118 C3 294 628
John
Feb 21 2003 12:02:53 David Evans
dave.nokia3330@orange.net
John, this is possibly noise... 


I can see something faint at the positions quoted but based on
your measurements, the difference in the x's and the y's, in
pixels per hour shown in brackets, suggest that the movement is
not constant.

12:18 to 12:42 (24 minutes) x = 4 (10.0), y = -2 (- 5.0)
11:42 to 12:18 (36 minutes) x = 4 ( 6.7), y = -4 (- 6.7)
11:18 to 11:42 (24 minutes) x = 5 (12.5), y = -4 (-10.0)

- Dave
Feb 24 2003 13:35:33 mike boschat
mboschat@eastlink.ca
Possible comet in C3 images - 20030223_1142 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
-------- ---- --- ---
20030223 1142 138 240
1218 141 237
1242 144 233
1342 148 232
1418 150 229
1442 152 227
----------------
Michael Boschat
Feb 24 2003 13:40:27 mike boschat
mboschat@eastlink.ca
CORRECTION to my last post::::>>

DATE SHOULD BE FOR today 24th NOT 23rd!
^^^
Mike Boschat.
Feb 25 2003 19:08:52 Derek Hammer
derek@sungrazer.nascom.nasa.gov
Hello, I was not able to confirm any new comets. As most of you

have noticed, the LASCO doors are closed for routine
momentum management maneuvers. The doors are expected to reopen
on Feb 27 at ~ 17:00 UT.

Derek
Feb 25 2003 22:56:38 Bruce McElhinny
mcelhinny@usintouch.com
20030217_1354_c3.gif  At 9:00 if it is a comet it  will be behind the sun now Bruce
Feb 26 2003 10:46:35 konarch karnavat
konarch_karnavat@yahoo.com
i found a comet with a yellow type color behind it 

it was big and after 9 seconds it blew off
Feb 26 2003 15:01:38 Derek Hammer
derek@sungrazer.nascom.nasa.gov
Hello,


Bruce, to make a comet claim you need to send me the x & y pixel
positions of your suspect object in at least 4 consecutive images.
This info is listed in the "Found Something?" section along with
some other info regarding typical mistakes that beginners make
when claiming a comet. Please have a look.

Konarch, this page is for comets found in SOHO images only.

If anyone would like to learn more about SOHO comets by asking
questions and picking up tips from more experienced SOHO comet
hunters then go to http://groups.yahoo.com/group/sohohunter/.

Also, a tutorial on SOHO comet hunting techniques has been
provided by S. Hoenig at http://www.sungrazer.org.

Derek
Feb 28 2003 01:34:45 David Evans
dave.nokia3330@orange.net
Possible small faint Kreutz in C3 images of 2003/02/23


1024x1024 gifs. 0,0 Top-Left.

Visible only in 4 or 5? frames and with 200% magnification.

The only reasons that have promted me to report this small faint
object is that both its path and velocity look very convincing.
Also, the object diminishes in brightness over sucessive frames.

2003/02/23

12:42 366, 570
13:42 372, 566
14:18 377, 563
14:42 379, 561
15:18 384, 559 ? Almost at the background noise level.

Very hard to see at normal viewing. A step up in magnification is
required to see it.

- Dave
Feb 28 2003 03:56:54 Xavier Leprette
xavier.leprette@wanadoo.fr
Possible Kreutz comet in a real-time C3 images now.


The object is faint, and visible in 3 consecutive images
on 2003/02/28 from 06:18 to 07:42 UT.

Approximate positions measured from the top-left corner
of a 1024x1024 frames :
col, row
06:18 220,672
06:42 224,669
07:42 234,661

Xavier Leprette
Feb 28 2003 04:12:16 Xavier Leprette
xavier.leprette@wanadoo.fr
Possible Kreutz comet in a real-time C3 images now.

UPDATE : confirmation about my previous message

The object is faint, and visible in 5 consecutive images
on 2003/02/28 from 06:18 to 08:18 UT.

Approximate positions measured from the top-left corner
of a 1024x1024 frames :
col, row
05:42 214,677
06:18 220,672
06:42 224,669
07:42 234,661
08:18 241,657

Xavier Leprette
Feb 28 2003 07:12:21 Mike boschat
mboschat@eastlink.ca
Possible comet in C3 at 20030228_0642 UT


Object farther behind. Xaiver's

****** 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
-------- ---- --- ---
20030228 0642 143 203
0742 147 198
0818 151 196
0842 154 192
----------------
Michael Boschat
Feb 28 2003 12:15:45 mike boschat
mboschat@eastlink.ca
DISREGARD MY POST OF Feb 28 2003 07:12:21


MB
Feb 28 2003 23:40:53 David Johnson
dej257@worldnet.att.net
Possible comet in near-realtime C3, 1024x1024, 0,0 uppper left:


Starts out dim and diffuse and brightens up, motion is consistent with a comet.


20030301_0242_c3.gif - 322, 581
20030301_0218_c3.gif - 311, 586
20030301_0142_c3.gif - 300, 591

Waiting for further images.

David Johnson