SOHO-LASCO Comet Reports for January, 2001.

Jan 02 2001 05:31:08 Scarmato Toni
toniscarmato@libero.it
Suspect object observed on 4 consecutive LASCO C3

images 512x512 (0,0) upper left corner:

Positions:

2000/01/02 07:42 (272,414)
2000/01/02 08:18 (269,412)
2000/01/02 08:42 (267,410)
2000/01/02 09:18 (266,408)

I am waiting other images for confirmation.


Regards,

Toni Scarmato
Jan 02 2001 11:32:17 Scarmato Toni
toniscarmato@libero.it
Another suspect object on LASCO C2 images 512x512 (0,0) 

upper left corner:

Positions:

2001/01/02 13:54 (32,460)
2001/01/02 14:06 (35,456)
2001/01/02 14:30 (40,451)

Regards,

Toni Scarmato
Jan 02 2001 17:48:18 michael boschat
mboschat@ns.sympatico.ca
Possible sungrazer in C2 images - 20010102_2154 UT


Date: January 2, 2001

Coordinates next post.

Brief description of comet:

Possible one...not sure

Michael Boschat
Jan 02 2001 18:14:38 michael boschat
mboschat@ns.sympatico.ca
Disregard last post

it was "noise"

Mike -
Jan 03 2001 05:46:57 Scarmato Toni
toniscarmato@libero.it
Diffuse suspect object observed on 5 consecutive LASCO C3 images,

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

Approximative positions:

2001/01/02 11:18 (396,189)
2001/01/02 11:42 (395,190)
2001/01/02 12:42 (393,193)
2001/01/02 13:42 (390,195)
2001/01/02 14:42 (388,198)


In the zone are present other point of light that seem move
toward the Sun, most likely cosmic ray.


Regards,

Toni Scarmato
Jan 03 2001 10:36:30 michael boschat
mboschat@ns.sympatico.ca
Possible sungrazer in C3 images - 20010103_0642 UT


Date: January 3, 2001

Coordinates next post.

Brief description of comet:

fuzzy, seems to be on 5+ images

Michael Boschat
Jan 03 2001 10:50:14 michael boschat
mboschat@ns.sympatico.ca
Here are the (approximate) XY coordinates of 

the object.

0,460 in lower left corner

LASCO C3 IMAGES

Date & UT Size X and Y
of Images used Coordinates
--------------------------------------------
20010103_0642.gif 1024 x 1024 306, 321
20010103_0742.gif 1024 x 1024 309, 226
20010103_0818.gif 1024 x 1024 312, 217
20010103_0842.gif 1024 x 1024 317, 212
20010103_0918.gif 1024 x 1024 320, 208
20010103_0942.gif 1024 x 1024 323, 204
20010103_1042.gif 1024 x 1024 324, 199
20010103_1118.gif 1024 x 1024 326, 194
20010103_1142.gif 1024 x 1024 326, 190

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







----------------
Michael Boschat
Jan 03 2001 12:16:24 Scarmato Toni
toniscarmato@libero.it
Suspect object observed on 4 LASCO C3 images 

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

Positions:

2001/01/03 14:18 (429,30)
2001/01/03 14:42 (428,30)
2001/01/03 15:18 (427,31)
2001/01/03 15:42 (426,31)


Regards,

Toni Scarmato

Jan 04 2001 08:15:32 Scarmato Toni
toniscarmato@libero.it
This object seem to follow a reliable orbit on 5 

consecutive LASCO C3 images 512x512 (0,0) to-left corner.

Positions approximate:

2001/01/04 00:18 (152,450)
2001/01/04 00:42 (155,449)
2001/01/04 01:42 (159,446)
2001/01/04 02:18 (162,442)
2001/01/04 02:42 (164,439)

In the other images I am not able to find the object
because there is noise.

Regards,

Toni Scarmato

Jan 04 2001 12:10:52 Scarmato Toni
toniscarmato@libero.it
Suspect object observed on 3 consecutive LASCO C3 images

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

Positions:

2001/01/04 13:42 (180,403)
2001/01/04 14:18 (185,400)
2001/01/04 14:42 (190,396)

The object is not visible on previous image.

Regards,

Toni Scarmato
Jan 04 2001 15:39:39 Douglas Biesecker
doug@sungrazer.nascom.nasa.gov
Just to note that comet C/2000 W1 (Utsunomiya-Jones) has finally

left the SOHO/LASCO C3 field-of-view. The last image in which
the comet was visible was 08:18 UT on Jan 4, 2001. The comet is
fainter than when it entered the telescope FOV. I've estimated
the V magnitude as it left the field to be 8.5 +/- 0.5. That
compares to a magnitude estimate of 7.5 on Dec 28 when it entered
the C3 FOV. I've not made any measurements, but I believe from
inspection of the images that the comet did actually brighten in
the period from Dec 28 to Dec 31 before fading. There is no
longer any evidence of a tail in the LASCO images.

Doug
Jan 04 2001 18:03:21 Doug Biesecker
doug@sungrazer.nascom.nasa.gov
        It's taken several days, but I've checked all of the reports

submitted over the holiday period. Actually, these go all the way back
to mid-December. There are two non-Kreutz comets in the list. These
two (probably related comets) follow the same apparent trajectory
separated by only a few pixels. The second comet is fainter than
the first.

Here are the confirmed comets:

DATE TIME TEL DISCOVERER
2000/12/07 01:50-03:26 C2 M. Oates
2000/12/05 10:26-12:06 C2 X.-M. Zhou
1998/10/29 06:18-08:54 C2 X. Leprette
2000/12/12 17:50-21:26 C2 D. Biesecker
1997/09/24 11:10-12:55 C2 X. Leprette
2000/12/17 06:18-20:26 C2,C3 T. Lovejoy
2000/12/19 18:34-19:55 C2 M. Boschat
2000/12/20 10:54-16:06 C2 M. Meyer (non-Kreutz)
2000/12/20 11:06-15:30 C2 S. Hoenig (non-Kreutz)
2000/12/23 18:54-21:30 C2 M. Boschat

There is only one report still under consideration, that of
M. Oates on Dec 26, 2000 at 16:34, reporting an object in C2 on
Dec 25, 2000.

Doug
Jan 05 2001 09:08:58 Scarmato Toni
toniscarmato@libero.it
Suspect object that start at point (135,410) on LASCO C3

image 512x512 (0,0) top-left corner date 2001/01/05 23:42 UT.

Other positions at next mail.

Regards,

Toni Scarmato
Jan 05 2001 09:59:26 Sebastian Hoenig
sfhoenig@aol.com
Possible comet in LASCO C3 images starting 12:42 (2001/01/05).


1024x1024 images, (0,0) upper left

Time (x,y)

12:42 30,240
13:42 40,252
14:18 45,259

I am not very certain because there are only three images so far
and the shape chages. So after all quite unsecure but...

Sebastian
Jan 05 2001 11:01:39 Scarmato Toni
toniscarmato@libero.it
The date of my last report is 2001/01/04 23:42.


Toni
Jan 05 2001 11:40:43 Sebastian Hoenig
sfhoenig@aol.com
Diregard my last report from earlier this day.


It was only NOISE!!!

Sebastian
Jan 05 2001 11:44:43 Scarmato Toni
toniscarmato@libero.it
Regarding my last post I am not been able to report

other positions.

Reagrds,

Toni Scarmato
Jan 06 2001 11:02:06 Scarmato Toni
toniscarmato@libero.it
This object seem mowing on a reliable orbit on 5

consecutive LASCO C3 images 512x512 (0,0) top-left corner.

Positions approximate:

2001/01/06 09:42 (198,385)
2001/01/06 10:43 (200,381)
2001/01/06 11:18 (201 378)
2001/01/06 11:42 (202,376)
2001/01/06 12:18 (203,374)

Regards,

Toni Scarmato

Jan 06 2001 17:19:10 Terry Lovejoy
lovejoyt@ozemail.com.au
Regarding the last post by Toni,  I have examined the

1024x1024 images for 11h 18m, 11h 42m and 12h 18m and
can't confirm this object. Judging by the positions
given it should be under the pylon.

Terry Lovejoy
Jan 07 2001 21:30:49 michael boschat
mboschat@ns.sympatico.ca
Possible sungrazer in C3 images - 20010108_0018 UT


Date: January 8, 2001

Brief description of comet:

Fuzzy, mabey...

Michael Boschat
Jan 07 2001 21:37:32 michael boschat
mboschat@ns.sympatico.ca
Here are the (approximate) XY coordinates of 

the object and an image of the area.

0,460 in lower left corner

LASCO C3 IMAGES

Date & UT Size X and Y
of Images used Coordinates
--------------------------------------------
20010108_0018.gif 1024 x 1024 309, 52
20010108_0042.gif 1024 x 1024 313, 49
20010108_0142.gif 1024 x 1024 322, 43
20010108_0218.gif 1024 x 1024 326, 38

----------------
Michael Boschat
Jan 08 2001 01:46:14 Xavier Leprette
xavier.leprette@education.gouv.fr
Possible sungrazing comet in a real-time C3 images now.


It is faint and visible from 2001/01/08 02:18 till 05:42 UT in 8 consecutive frames,
On the left of the pylone.

The object is moving towards the sun, but I'm not sure for a comet.
Coordinates in a next e-mail.

Xavier Leprette
Jan 08 2001 02:09:34 Xavier Leprette
xavier.leprette@education.gouv.fr
Possible sungrazing comet in a real-time C3 images from 08 January 2001

(More information about the previous message)

The suspect object looks like a faint data point without obvious tail.

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

col, row
02:18 UT 163,299
02:42 UT 164,297
03:18 UT 167,295
03:42 UT 168,293
04:42 UT 172,289
05:18 UT 175,286
05:42 UT 176,285
06:18 UT 179,282

Xavier Leprette
Jan 08 2001 02:53:57 Lovejoy Terry
lovejoyt@ozemail.com.au
I can confirm Xavier's last comet, it is fairly obvious in

1024 x 1024 images. Should be entering C2 field. Congradulations!

Terry Lovejoy

Jan 08 2001 03:01:42 XingMing Zhou
zh_x_m@163.net
Dear Leprette:

The object you reported has been reported by Boschat.
"y" you reported is the "y"+555/2.

Zhou

Jan 08 2001 11:33:58 Doug Biesecker
doug@sungrazer.nascom.nasa.gov
        I can confirm M. Boschats real-time discovery of a

sungrazing comet visible in LASCO C3 images on Jan 7-8, 2001.
Preliminary position measurements are given below. So far, I've
not been able to locate the comet in C2 images, though it should
have entered the field of view by now. Sorry Xavier, Mike's
coordinates do properly identify the comet, so he gets the credit.

Doug

# HEIGHT DATE TIME ANGLE TEL FC COL ROW
13.98 2001/01/07 23:18:13 121.0 C3 10 305.0 403.0
13.79 2001/01/07 23:42:06 120.6 C3 10 307.0 406.0
13.38 2001/01/08 00:18:05 120.5 C3 10 313.0 410.0
13.22 2001/01/08 00:42:05 119.8 C3 10 314.0 414.0
12.60 2001/01/08 01:42:15 119.0 C3 10 322.0 422.0
12.29 2001/01/08 02:18:05 118.6 C3 10 326.0 426.0
12.04 2001/01/08 02:42:05 118.1 C3 10 329.0 430.0
11.70 2001/01/08 03:18:05 117.4 C3 10 333.0 435.0
11.48 2001/01/08 03:42:06 117.0 C3 10 336.0 438.0
10.44 2001/01/08 05:18:05 115.4 C3 10 350.0 451.0
10.19 2001/01/08 05:42:05 114.7 C3 10 353.0 455.0
9.80 2001/01/08 06:18:05 113.6 C3 10 358.0 461.0
9.47 2001/01/08 06:42:05 113.3 C3 10 363.0 464.0
8.81 2001/01/08 07:42:09 111.6 C3 10 372.0 473.0
8.44 2001/01/08 08:18:06 110.6 C3 10 377.0 478.0
Jan 08 2001 16:12:54 Doug Biesecker
doug@sungrazer.nascom.nasa.gov

Just cleaning up some unfinished business. On Dec 26, 2000, M. Oates
reported a comet visible in LASCO C2 images on Dec 25, 2000. After
much thought and discussion, I have finally accepted this and can
confirm the 5 observations listed below. Note, the initial report
listed 8 observations.

# HEIGHT DATE TIME ANGLE TEL FC COL ROW
7.66 2000/12/25 02:54:05 128.4 C2 11 9.0 106.0
7.56 2000/12/25 03:06:06 127.9 C2 11 13.0 116.0
7.37 2000/12/25 03:30:05 127.2 C2 11 21.0 132.0
7.15 2000/12/25 03:54:05 126.2 C2 11 30.0 152.0
7.02 2000/12/25 04:06:05 126.3 C2 11 39.0 158.0


This takes the SOHO comet tally to 281.

This comet is number 280, and the M. Boschat discovery from Jan
7-8, 2001 is number 281.

Doug
Jan 10 2001 10:06:41 Scarmato Toni
toniscarmato@libero.it
Suspect object on LASCO C3 512x512 (0,0) top-left

corner at following positions:

2001/01/10 08:18 (265,490)
2001/01/10 08:42 (266,488)

I am waiting other images to confirmation.

Regards,

Toni Scarmato
Jan 10 2001 10:52:11 Scarmato Toni
toniscarmato@libero.it
Other positions of suspect object of the my last report:



2001/01/10 09:18 (266,486)
2001/01/10 09:42 (265,484)
2001/01/10 10:42 (265,480)

Description:

Point of light that seem moving on reliable orbit.

Regards,

Toni Scarmato
Jan 10 2001 11:49:29 Doug Biesecker
doug@sungrazer.nascom.nasa.gov
First, let me say that I can't confirm the report T. Scarmato made

earlier today.

Second, I can confirm a report T. Scarmato made directly to me via
e-mail. (I've already admonished him for this egregious error).
Note, if the comet were reported on the web by another person, that
person would have been given credit.

That report is as follows:

T. Scarmato reported to me his observations of a comet in
archived SOHO/LASCO C2 data. This comet was visible on
May 11, 2000, several hours before the comet C/2000 J5
entered the C2 field of view. Rough CCD position measurements
are given below. I guess even with the pool of
observers we have, a comet occasionally slips through.

Doug

#COMMENT: COMET SOHO-282
# HEIGHT DATE TIME ANGLE TEL FC COL ROW
6.22 2000/05/11 09:50:05 171.3 C2 10 429.0 7.0
5.88 2000/05/11 10:26:09 172.5 C2 10 444.0 33.0
5.65 2000/05/11 10:50:07 173.5 C2 10 454.0 51.0
5.52 2000/05/11 11:06:05 174.2 C2 10 461.0 61.0
5.34 2000/05/11 11:26:05 175.1 C2 10 469.0 75.0
5.10 2000/05/11 11:50:05 176.1 C2 10 478.0 94.0
4.94 2000/05/11 12:06:05 176.9 C2 10 485.0 107.0
4.76 2000/05/11 12:26:06 178.1 C2 10 494.0 121.0
Jan 10 2001 16:17:47 michael boschat
mboschat@ns.sympatico.ca
Possible sungrazer in C3 images - 20010110_1842 UT


Date: January 10, 2001

Brief description of comet:

Hard to describe, "irregular"
looking, flipping about.


Here are the (approximate) XY coordinates of
the object.

0,460 in lower left corner

LASCO C3 IMAGES

Date & UT Size X and Y
of Images used Coordinates
--------------------------------------------
20010110_1842.gif 1024 x 1024 203, 173
20010110_1942.gif 1024 x 1024 206, 170
20010110_2018.gif 1024 x 1024 210, 167
20010110_2042.gif 1024 x 1024 214, 163
--------------
Michael Boschat
Jan 11 2001 03:02:48 Scarmato Toni
toniscarmato@libero.it
I Have observed two object on archive LASCO C2 images

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

First object

2000/05/13 11:06 (407,1)
2000/05/13 11:26 (407,10)
2000/05/13 11:50 (406,16)

The object is not visible on other images and on the
last image became diffuse and faint.


Second object

2000/05/13 08:26 (15,418)
2000/05/13 09:06 (20,410)
2000/05/13 09:26 (25,402)
2000/05/13 09:50 (29,394)

Object bright. For this object I Have measured an
other position that seem in agreement with the apparent
orbit but is not in agreement with the time-space interval
of the other positions.

2000/05/13 08:06 (7,437)

Because this object is bright I Have searched if it was
reported in the past, but I not can to verify.

Regards,

Toni Scarmato
Jan 11 2001 08:53:49 Scarmato Toni
toniscarmato@libero.it
Suspect object that seem visible on 5 consecutive 

LASCO C2 images 512x512 (0,0) top-left corner:

Approximate positions:

2001/01/11 05:30 (2,113)
2001/01/11 05:54 (4,109)
2001/01/11 06:06 (7,105)
2001/01/11 06:30 (10,100)
2001/01/11 06:54 (16,96)

From the trajectory seem a not sungrazing object, but
I am not sure on the reality of the object.

Regards,

Toni scarmato
Jan 11 2001 08:54:31 Scarmato Toni
toniscarmato@libero.it
Suspect object that seem visible on 5 consecutive 

LASCO C2 images 512x512 (0,0) top-left corner:

Approximate positions:

2001/01/11 05:30 (2,113)
2001/01/11 05:54 (4,109)
2001/01/11 06:06 (7,105)
2001/01/11 06:30 (10,100)
2001/01/11 06:54 (16,96)

From the trajectory seem a not sungrazing object, but
I am not sure if this object is real.

Regards,

Toni scarmato
Jan 11 2001 09:02:46 Doug Biesecker
doug@sungrazer.nascom.nasa.gov
The reports by M. Boschat and T. Scarmato from Jan 10 and 11 can

not be verified. In particular, the points identified by
T. Scarmato vary in appearance and brightness in random ways,
suggesting that they are just cosmic ray hits in the detector.

Doug
Jan 11 2001 11:23:39 Scarmato Toni
toniscarmato@libero.it
Suspect object visible on 4 consecutive LASCO C2

images at following positions:


2001/01/11 05:54 (462,259)
2001/01/11 06:06 (458,257)
2001/01/11 06:30 (452,253)
2001/01/11 06:54 (446,250)


I am watching on LASCO C2 because seem that this object,
near the brigth star is visible on 2 images.

Regards,

Toni Scarmato
Jan 11 2001 11:43:24 Scarmato Toni
toniscarmato@libero.it
Regarding my last report,

on LASCO C3 images 512x512 (0,0) top-left corner
is visible a faint point that move toward the sun at
following positions:

2001/01/11 06:42 (308,250)
2001/01/11 07:42 (306,248)
2001/01/11 08:18 (305,247)

I am not sure if this zone is the same zone on LASCO C2.

Regards,

Toni Scarmato
Jan 12 2001 08:45:28 Scarmato Toni
toniscarmato@libero.it
Possible comet on LASCO C3 images at following

positions:


2001/01/12 00:18 (232,287)
2001/01/12 00:42 (233,285)
2001/01/12 01:42 (236,283)

If this object is real is visible also in the LASCO C2.

I am downloading the images for to confirmation.

Regards,

Toni Scarmato
Jan 12 2001 09:25:13 Scarmato Toni
toniscarmato@libero.it
I am not been able to find on LASCO C2 images and to confirm

the object of the my last report.

Regards,

Toni Scarmato
Jan 12 2001 10:29:41 Scarmato Toni
toniscarmato@libero.it
Diffuse suspect object that seem visible on 4

consecutive LASCO C3 images 512x512 (0,0) top-left
corner:

Positions:

2001/01/12 00:18 (330,338)
2001/01/12 00:42 (329,337)
2001/01/12 01:42 (328,335)
2001/01/12 02:18 (327,334)

I am not sure on this object but seem moving
on a reliable orbit.

Toni Scarmato
Jan 12 2001 16:37:41 Xavier Leprette
xavier.leprette@education.gouv.fr
Possible archive sungrazer in C2 frames from 19 May 2000


The object is visible in 7 consecutives images.
It looks like a very faint blob, round and faintly condensed,
without a tail.

All positions measured from the bottom left corner
in 1024x1024 frames :

Ref. image, X, Y, Time , Date
22068238.fts 537 12 04:06:05.400 19 May 2000
22068239.fts 543 25 04:26:05.388 19 May 2000
22068240.fts 550 42 04:50:05.673 19 May 2000
22068241.fts 554 53 05:06:08.063 19 May 2000
22068242.fts 560 67 05:26:07.052 19 May 2000
22068243.fts 568 83 05:50:05.438 19 May 2000
22068244.fts 573 95 06:06:05.728 19 May 2000

This object is different from Soho116 discovered at 21:26 UT.
I don't think that it is a known comet.

Xavier Leprette
Jan 13 2001 07:54:29 Michael Oates
mike@ph.u-net.com
Possible comet from 29 May 2000

Very faint, no wonder it was missed.

In 1024x1024 C2 Gif images
with 0,0 in bottom left corner

Image Col Row
20000529_1830_c2.gif 654 5
20000529_1854_c2.gif 656 16 *
20000529_1931_c2.gif 663 41
20000529_1954_c2.gif 666 54
20000529_2006_c2.gif 669 66
20000529_2030_c2.gif 672 78

*Position of this is a bit iffy as it's rather faint.

I also confirm Xavier Leprette report of the comet from
19 May 2000
Jan 13 2001 09:04:03 Michael Oates
mike@ph.u-net.com
Archive Sungrazer in C2 GIF images from 10 June 2000


This is among quite a lot of noise.

Image Col Row
20000610_1931_c2.gif 843 8
20000610_1954_c2.gif 841 22
20000610_2006_c2.gif 841 30
20000610_2030_c2.gif 841 45
20000610_2108_c2.gif 839 69
20000610_2130_c2.gif 838 84
20000610_2154_c2.gif 836 99
20000610_2206_c2.gif 836 114

Mike
Jan 13 2001 09:11:00 Michael Oates
mike@ph.u-net.com
*Sorry correction to last position in last report

Archive Sungrazer in C2 GIF images from 10 June 2000

This is among quite a lot of noise.

Image Col Row
20000610_1931_c2.gif 843 8
20000610_1954_c2.gif 841 22
20000610_2006_c2.gif 841 30
20000610_2030_c2.gif 841 45
20000610_2108_c2.gif 839 69
20000610_2130_c2.gif 838 84
20000610_2154_c2.gif 836 99
20000610_2206_c2.gif 835 107

Mike
Jan 13 2001 09:14:35 Scarmato Toni
toniscarmato@libero.it
Suspect object that seem visible on 5 consecutive

LASCO C3 images 512x512 (0,0) top-left corner at
following positions:


2001/01/13 00:18 (362,222)
2001/01/13 00:42 (361,221)
2001/01/13 01:42 (358,219)
2001/01/13 02:18 (356,217)
2001/01/13 02:42 (355,216)

The object seem moving on a not sungrazer orbit.

Regards,

Toni Scarmato
Jan 13 2001 09:28:19 Michael Oates
mike@ph.u-net.com
Archive Sungrazer in C2 image from 11 June 2000


WOW! another one that got away!

Image Col Row
20000611_0530_c2.gif 842 28
20000611_0554_c2.gif 842 43
20000611_0606_c2.gif 842 51
20000611_0630_c2.gif 841 67
20000611_0654_c2.gif 839 82
20000611_0731_c2.gif 837 106
20000611_0754_c2.gif 836 120
20000611_0806_c2.gif 835 128
20000611_0830_c2.gif 834 145

Mike
Jan 13 2001 09:47:47 Scarmato Toni
toniscarmato@libero.it
Suspect object on 4 consecutive LASCO C2 images

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

Positions approximate:

2001/01/13 01:31 (487,323)
2001/01/13 01:54 (482,315)
2001/01/13 02:06 (479,310)
2001/01/13 02:30 (474,301)

The object seem diffuse and faint on first two images
and became brigth on last two image.

Regards,

Toni Scarmato
Jan 13 2001 10:05:07 Scarmato Toni
toniscarmato@libero.it
Suspect object entered on LASCO C2 field of view.

The object is diffuse. At this moment I Have only the
following 3 positions
Images 512x512 (0,0) top-left corner:


2001/01/13 08:30 (1,49)
2001/01/13 09:06 (5,51)
2001/01/13 09:30 (9,53)


Regards,

Toni Scarmato
Jan 13 2001 10:44:26 Michael Oates
mike@ph.u-net.com
Archive Sungrazer in C2 images from 23 June 2000


0,0 in bottom left corner of 1024x1024 images
Image Col Row
20000623_0754_c2.gif 994 93
20000623_0806_c2.gif 992 100
20000623_0830_c2.gif 986 116
20000623_0854_c2.gif ? Noise
20000623_0906_c2.gif 976 139
20000623_0930_c2.gif 969 152
20000623_0954_c2.gif 962 169
20000623_1006_c2.gif 959 175
20000623_1031_c2.gif 950 195

Mike
Jan 13 2001 11:12:24 Michael Oates
mike@ph.u-net.com
Archive Sungrazer in C2 images from 4 July 2000


0,0 in bottom left corner of 1024x1024 images
Image Col Row
20000704_1927_c2.gif 1003 244
20000704_1950_c2.gif 991 259
20000704_2006_c2.gif 982 269
20000704_2026_c2.gif 971 283

Mike
Jan 13 2001 14:41:28 Michael Oates
mike@ph.u-net.com
Archive Sungrazer in C2 GIF images from 30 April 2000


This one follows on after SOHO-111
It is condensed with a faint tail.
This is not exactly a faint one, we must have been
so pleased to see the very bright SOHO-111 that we
did not look at any more frames for that day!!!

0,0 in bottom left corner of 1024x1024 images
Image Col Row
20000430_1206_c2.gif 260 21
20000430_1230_c2.gif 273 37
20000430_1254_c2.gif 287 53
20000430_1331_c2.gif 308 79
20000430_1354_c2.gif 321 96
20000430_1406_c2.gif 329 104
20000430_1430_c2.gif 343 122
20000430_1454_c2.gif 357 140
20000430_1506_c2.gif 364 149
20000430_1530_c2.gif 378 167
20000430_1554_c2.gif ? Noise

Mike
Jan 13 2001 15:06:00 Michael Oates
mike@ph.u-net.com
Archive Sungrazer in C2 GIF images from 4 May 2000


Quite a bright one, slight tail.

0,0 in bottom left corner of 1024x1024 images
Image Col Row
20000504_0806_c2.gif 340 8
20000504_0826_c2.gif 350 22
20000504_0850_c2.gif 363 40
20000504_0906_c2.gif 371 52
20000504_0926_c2.gif 381 66
20000504_0950_c2.gif 394 85
20000504_1026_c2.gif 413 113
20000504_1050_c2.gif 426 132
20000504_1106_c2.gif 435 145

Mike
Jan 13 2001 15:57:38 Michael Oates
mike@ph.u-net.com
Archive Sungrazer in C2 GIF images from 17 April 2000


0,0 in bottom left corner of 1024x1024 images
Image Col Row
20000417_0606_c2.gif 115 17
20000417_0630_c2.gif Hidden by date
20000417_0654_c2.gif 148 50
20000417_0731_c2.gif 175 76
20000417_0754_c2.gif 192 93
20000417_0806_c2.gif 201 102
20000417_0830_c2.gif 219 120
20000417_0854_c2.gif 239 139

Mike
Jan 13 2001 17:44:45 michael boschat
aa063@chebucto.ns.ca
Possible sungrazer in C2 images - 20010113_2154 UT


Date: January 13, 2001

Coordinates next post.

Brief description of comet:

Bright comet?

Michael Boschat
Jan 13 2001 17:50:27 michael boschat
aa063@chebucto.ns.ca
Here are the (approximate) XY coordinates of 

the object.

0,460 in lower left corner

LASCO C2 IMAGES

Date & UT Size X and Y
of Images used Coordinates
--------------------------------------------
20010113_2154.gif 512 x 512 7, 404
20010113_2206.gif 512 x 512 27, 350


I'm using a modem now and it's slow!!
----------------
Michael Boschat
Jan 13 2001 18:02:50 michael boschat
aa063@chebucto.ns.ca
Disregard last post - Noise on

the C2 image...

Mike B.

Now using a 56K modem connection!
and still many problems configuring the
modem-connection setup!! Agh!!
Jan 13 2001 23:36:52 michael boschat
aa063@chebucto.ns.ca
Possible sungrazer in C3 images - 20010114_0318 UT


Date: January 14, 2001

Coordinates next post.

Brief description of comet:

Point in 3 frames in C3 not
jumping much..possible

Here are the (approximate) XY coordinates of
the object.

0,460 in lower left corner

LASCO C3 IMAGES

Date & UT Size X and Y
of Images used Coordinates
--------------------------------------------
20010114_0314.gif 512 x 512 153, 297
20010114_0342.gif 512 x 512 154, 296
20010114_0418.gif 512 x 512 155, 292


Michael Boschat
Jan 14 2001 08:05:01 michael boschat
aa063@chebucto.ns.ca
The object I reported on my last post at 

Jan 13 2001 23:36:52
is seen continuing on the following
frames from 0518 to 0618 UT.

Boy, this modem stuff is fun :(

Mike Boschat
Jan 14 2001 09:47:21 Scarmato Toni
toniscarmato@libero.it
Suspect diffuse object on 4 consecutive LASCO C2 images

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

Approximate Positions:

2001/01/14 04:30 (252,509)
2001/01/14 05:30 (254,503)
2001/01/14 05:54 (255,499)
2001/01/14 06:06 (255,495)


Regards,

Toni Scarmato
Jan 14 2001 10:14:39 Scarmato Toni
toniscarmato@libero.it
Suspect object in 5 consecutive LASCO C3 images

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

Positions:


2001/01/14 03:18 (258,417)
2001/01/14 03:42 (257,414)
2001/01/14 04:18 (256,411)
2001/01/14 05:18 (256,406)
2001/01/14 05:42 (256,403)

Point of ligth that seem moving on a reliable orbit.
I am not able to found the object on image at 06:18.

Regards,

Toni Scarmato
Jan 15 2001 09:30:35 Scarmato Toni
toniscarmato@libero.it
Suspect object on 6 LASCO C2 images 512x512 (0,0) top-left

corner.

Approximate positions:


2001/01/13 14:30 (508,332)
2001/01/13 14:54 (506,327)
2001/01/13 15:06 (504,323)
2001/01/13 15:30 (498,314)?
2001/01/13 15:54 (495,311)
2001/01/13 16:06 (494,308)

Faint object that seem move toward the Sun.
I want to watch again the positions because seem visible in
other images.

Regards,

Toni Scarmato
Jan 15 2001 10:17:55 Scarmato Toni
toniscarmato@libero.it
Suspect object on 4 consecutive LASCO C3 images

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

Positions:

2001/01/13 14:42 (118,275)
2001/01/13 15:18 (120,278)
2001/01/13 15:42 (123,281)
2001/01/13 16:18 (126,283)

The object seem visible on other images that I am analysing.

Regards,

Toni Scarmato
Jan 15 2001 11:24:37 Scarmato Toni
toniscarmato@libero.it
Comet on 9 consecutive LASCO C3 images 512x512 (0,0) top-left corner


Positions:

2001/01/14 03:18 (53,116)
2001/01/14 03:42 (54,115)
2001/01/14 04:18 (55,114)
2001/01/14 05:18 (56,113)
2001/01/14 05:42 (57,112)
2001/01/14 06:18 (58,111)
2001/01/14 07:42 (59,110)
2001/01/14 08:18 (60,108)
2001/01/14 08:42 (61,107)

Other positions in the next mail.


Regards,

Toni Scarmato
Jan 15 2001 11:36:50 Scarmato Toni
toniscarmato@libero.it
Other Positions of comet on LASCO C3 images 512x512 (0,0)

top-left corner

Positions:

2001/01/14 09:18 (61,107)
2001/01/14 09:42 (62,106)
2001/01/14 10:43 (63,105)
2001/01/14 11:18 (64,104)
2001/01/14 11:42 (65,103)
2001/01/14 12;18 (64,102)
2001/01/14 12:42 (63,101)



Regards,

Toni Scarmato
Jan 15 2001 12:21:02 Scarmato Toni
toniscarmato@libero.it
I Think that the comet reported on my last post is the

same object that M. Boschat have reported on
Jan 13 2001 23:36:52


Regards,

Toni Scarmato
Jan 15 2001 12:32:15 Pavel Shkreby
pavel01@mail.ru
Possible sungrazing comet in a real-time C3 images.

It is faint and visible from 2001/01/14 17:18 UT till 18:18 UT in 3 consecutive frames.
Position
Time X Y
17:18 - 191.273
17:42 - 197.269
18:18 - 204.265
512x512 0.0 - upper left corner

Somebody can confirm it?
------
Pavel Shkreby
Jan 15 2001 13:06:30 Doug Biesecker
doug@sungrazer.nascom.nasa.gov
        Lots of SOHO/LASCO comets have been confirmed.  Other

than the comets listed below, there are 4 other reports I'm still
trying to confirm. More info in the next e-mail.

Note, the positions given by M. Boschat for the Jan 14
comet are too low by about 40 pixels in the y-position. My
positions are at the bottom.

Doug


Real-time comet:

DATE TIME(UT) TEL DISCOVERER
2001/01/14 03:18 - 12:42 C3 M. Boschat
(Should be visible in more images. Waiting for data gaps to
fill in.)

Archive finds:

2000/05/19 04:06 - 06:06 C2 X. Leprette
2000/05/29 18:30 - 20:30 C2 M. Oates
2000/06/11 05:30 - 08:06 C2 M. Oates
2000/07/04 18:50 - 20:26 C2 M. Oates
2000/04/30 12:06 - 15:30 C2 M. Oates
2000/05/04 08:50 - 11:06 C2 M. Oates
2000/04/17 06:06 - 08:30 C2 M. Oates


M. Boschat Jan 14 comet
# HEIGHT DATE TIME ANGLE TEL FC COL ROW
15.15 2001/01/14 03:18:06 127.3 C3 10 304.0 368.0
14.91 2001/01/14 03:42:05 127.1 C3 10 307.0 371.0
14.59 2001/01/14 04:18:05 127.0 C3 10 311.0 375.0
13.77 2001/01/14 05:42:05 126.0 C3 10 320.0 387.0
13.42 2001/01/14 06:18:05 125.6 C3 10 324.0 392.0
12.60 2001/01/14 07:42:10 124.8 C3 10 334.0 403.0
12.20 2001/01/14 08:18:05 124.5 C3 10 339.0 408.0
11.86 2001/01/14 08:42:05 124.0 C3 10 343.0 413.0
11.62 2001/01/14 09:18:05 123.7 C3 11 346.0 416.0
11.28 2001/01/14 09:42:05 123.2 C3 11 350.0 421.0
10.65 2001/01/14 10:43:09 122.5 C3 11 358.0 429.0
10.19 2001/01/14 11:18:05 121.9 C3 11 364.0 435.0
9.88 2001/01/14 11:42:05 121.5 C3 11 368.0 439.0
9.49 2001/01/14 12:18:07 120.9 C3 11 373.0 444.0
9.23 2001/01/14 12:42:05 120.3 C3 11 376.0 448.0

Jan 15 2001 13:13:09 Doug Biesecker
doug@sungrazer.nascom.nasa.gov
A few things.  One is, I think there is a second piece closely

following the 2000/04/30 archive discovery by M. Oates.
Discovered by Doug Biesecker. Positions below. I'm pretty
confident on this, but I'll wait for Derek to confirm. The
M. Oates find for 2000/04/30 may be bright enough to find in C3,
so that still needs to be checked.

# HEIGHT DATE TIME ANGLE TEL FC COL ROW
6.78 2000/04/30 12:06:06 153.1 C2 10 255.0 14.0
6.55 2000/04/30 12:30:05 153.6 C2 10 268.0 29.0
6.30 2000/04/30 12:54:05 154.2 C2 10 282.0 45.0
5.91 2000/04/30 13:31:22 154.9 C2 10 302.0 72.0
5.67 2000/04/30 13:54:05 155.6 C2 10 316.0 87.0
5.53 2000/04/30 14:06:05 155.9 C2 10 323.0 97.0
5.30 2000/04/30 14:30:05 156.6 C2 10 335.0 112.0
5.02 2000/04/30 14:54:07 157.4 C2 10 350.0 131.0


The M. Oates claims for 2000/06/10 and for 2000/06/23 are still
being considered. As is the report of Pavel Shkreby for
2001/01/14. I just don't want to deal with that one until the
data gaps are filled in.

Note, the positions given by T. Scarmato for C2 on Jan 14th are
nowhere near the comet discovered by M. Boschat. I think there
must be a problem there.


Doug
Jan 16 2001 01:40:22 Michael Oates
mike@ph.u-net.com
Archive sungrazer in C2 images from 21 May 1996.


This was a very lucky find, it can only be seen in 512x512 images, and they are of poor quality. But what is interesting
about this, (and this is how I spotted it) is that four of the
images are only 5 mins apart, which meant that the comet appeared
to stay almost stationary for a few frames. There is very slight
movement between images, but only by one pixel or less.

(0,0 in bottom left corner)

Image Col Row Format Time Date
22001630.fts 321 7 512x512 13:56:01.464 21 May 1996
22001631.fts 324 15 512x512 14:42:18.838 21 May 1996
22001632.fts 324 15.5 512x512 14:47:41.334 21 May 1996
22001633.fts 325 16 512x512 14:53:04.432 21 May 1996
22001634.fts 325 17 512x512 14:58:27.429 21 May 1996
22001635.fts 331 42 512x512 20:09:22.653 21 May 1996
22001636.fts 333 49 512x512 20:14:44.651 21 May 1996

Regards,

Michael Oates
Jan 16 2001 08:54:45 Doug Biesecker
doug@sungrazer.nascom.nasa.gov
The report of M. Oates for a comet on May 21, 1996 is still

under consideration. I'm pretty certain that it's a real object.
However, note that the SOHO spacecraft was undergoing roll
maneuvers on that day. Between the images at 14 UT and 20 UT, the
spacecraft was rolled 90 degrees. Therefore, the positions
reported for 20 UT cannot be for the object observed at 14 UT.
One can always check
http://lasco-www.nrl.navy.mil/daily_stat_srch.html
for the SOHO/LASCO status at any time during the mission. Those
pages are mostly complete, but not foolproof. If it's there, then
believe it. But, not bit of necessary information has been
posted there.

Doug
Jan 17 2001 09:57:55 Doug Biesecker
doug@sungrazer.nascom.nasa.gov

Hi all,
Trying to clear up some of the uncleared backlog.
1) I'm unable to confirm P. Shkreby's claim of a comet in images
from 2001/01/14. The positions reported do not correspond to the
M. Boschat comet discovered earlier in the day.

2) I can confirm the D. Biesecker discovery of a comet in C2 images
from 2000/04/30, following closely behind the M. Oates comet on
that day. I can't find the M. Oates comet in C3 images. I think
it's too close to the pylon. These fragments don't follow SOHO-111
exactly, but are displaced to the left.

3) The M. Oates report of an object in C2 images from 1996/05/21 is
in fact a star (HD 25230). Because SOHO is rolled 90 degrees at
14 UT, stars are moving from the bottom towards the top at that
time. SOHO is in a normal roll orientation by 20 UT.

4) I still can't find the M. Boschat comet of 2001/01/14 in C2
images. I'm going to assume it's not there, unless someone else
can find it for me. This reminds me a lot of SOHO-104, a Feb 2000
comet which also could not be found in C., even though I thought
it would be bright enough.

5) I'm still trying to confirm the M. Oates claims for comets in
images from 200/06/10 and 2000/06/23.

6) The LASCO doors should be opened sometime today. In case you
were not aware of it, SOHO went into 'safe' mode Sunday night.
Recovery was smooth and successful.

That's all for now.

Doug
Jan 18 2001 14:06:25 Doug Biesecker
doug@sungrazer.nascom.nasa.gov

Informational notice:

LASCO was originally due to reopen the telescope doors on
Wednesday. Because of a possibility of contamination from
debris thrown about when the CDS door is opened (it slams open,
shaking loose insulation) the LASCO doors are opened after
the CDS doors. CDS had some instrumental problems yesterday, and
did not open the door as expected. Thus, we are waiting on them
to make a decision. We're expecting to be observing again sometime
today, but no guarantees.

Doug
Jan 18 2001 18:15:30 Sebastian Hoenig
sfhoenig@aol.com
Possible comet in LASCO C2, starting 20010118_2256_c2.gif


Date: xx.xx.2001

Description:
Quite obvious comet, tail visible, waiting for other images

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

Time (x,y)

22:56 634,817

More images should be checked when they are online.

Sebastian Hoenig
Jan 18 2001 18:44:50 Sebastian Hoenig
sfhoenig@aoil.com
Sorry, seems to be a star.


I think half a week without any image made me too eager...

Sebastian
Jan 19 2001 02:21:12 Xavier Leprette
xavier.leprette@education.gouv.fr
Possible sungrazing comet in a real-time C3 images now.


It is faint and visible from 2001/01/19 03:18 till 04:42 UT in 3 or 4 consecutive frames, at South-Est quadrant.
Approximate positions measured from the top-left corner of 512x512 frames :

col, row
03:18 UT 138,316

The suspect object is moving towards the sun.

I'm not sure so I'm waiting for an another image to confirm my report.
Coordinates in a next e-mail.

Xavier Leprette
Jan 19 2001 03:11:36 Xavier Leprette
xavier.leprette@education.gouv.fr
Possible sungrazing comet in a real-time C3 images from 19 January 2001

(More information about the previous message)

The suspect object looks like a faint, fuzzy data point without tail.

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

col, row
03:18 UT 138,316
03:42 UT 139,314
04:18 UT 142,313
04:42 UT 143,311 ?

Xavier Leprette
Jan 19 2001 05:02:15 Xavier Leprette
xavier.leprette@education.gouv.fr
About my two previous reports (2001/01/19 C3 images) :

Sorry Doug,
I've made a check on 1024 images and it seems that it was not a real
object.

Xavier
Jan 19 2001 16:30:09
 
Jan 22 2001 08:36:44 Scarmato Toni
toniscarmato@libero.it
Suspect object that seem visible on 4 consecutive images

LASCO C2 512x512 (0,0) top-left corner
starting at following position:

2001/01/22 08:54 (147,464)

Other positions and informations at next post.

Regards,

Toni Scarmato
Jan 22 2001 08:53:15 Scarmato Toni
toniscarmato@libero.it
Other positions for the suspect object of the last my post:


2001/01/22 09:06 (154,449)
2001/01/22 09:30 (157,439)
2001/01/22 09:54 (160,425)


I am not sure on this object...


Regards,



Jan 22 2001 09:24:40 Scarmato Toni
toniscarmato@libero.it
Possible comet on 6 consecutive LASCO C2 images 512x512

(0,0) top-left corner

Positions:

2001/01/22 08:30 (390,506)
2001/01/22 08:54 (387,504)
2001/01/22 09:06 (383,502)
2001/01/22 09:30 (379,500)
2001/01/22 09:54 (375,497)
2001/01/22 10:06 (372,493)

Diffuse faint object. I am almost sure on this object.

Regards,

Toni Scarmato
Jan 22 2001 10:42:27 Doug Biesecker
doug@sungrazer.nascom.nasa.gov
I cannot confirm either of the reports by T. Scarmato made this

morning. The apparent speeds of both 'objects' as reported are
highly variable. Speeding up and slowing down at random. Not
the sort of behaviour we expect for real objects. Also, the first
object reported shows variations in shape. For example, at
09:06 UT, the object appears as a streak, whereas at 09:30 it is
a point-like object. Again, not something to expect from a real
object. These are just random cosmic ray hits on the detector.

Doug
Jan 22 2001 14:17:24 Roger Gore
rgore@socal.rr.com
Doug -


I think I have found a possible comet in LASCO C3 data
from 2000/07/01. This is a very faint object. Below are the
pixel locations of the object. The units:
Frame # : This is the image count from the start of the day in
my system - which results from excluding non-normal images and
images smaller than 1024x1024 from further processing.
Time : Seconds from midnight
X-pixel: Horizontal pixel count from lower left corner with the
lower left corner being (0,0).
Y-pixel: Vertical pixel count from lower left corner.
Amplitude: Once again these are units in my internal system
which includes a significant amount of image processing. I have
not made the calibration between my processed images and the raw
SOHO images. However to give some feeling for the value, SOHO 167
(C/2000 M9) has an average value of 300 amplitude units.

July 1, 2000
Frame # Time X-pixel Y-pixel Amplitude

23 57905.4 698 488 49.1
25 65885.6 694 511 79.8
27 73085.9 691 531 84.6
28 76685.5 690 540 87.3
29 80286.9 688 551 113.4
30 83893.7 686 560 87.7
31 85326.4 687 563 64.9

I went back and examined these pixels in the raw C3 data.
At best they represented a slight protuberance in the background
level.

Regards,
Roger Gore

Jan 22 2001 17:59:01 Michael Oates
mike@ph.u-net.com
Possible sungrazer in C3 realtime images.


0,0 in bottom left in 1024 images

Inage Col Row
20010122_2118_c3.gif
20010122_2142_c3.gif
20010122_2218_c3.gif 238 410

Need more images to confirm

Michael Oates
Jan 23 2001 01:14:16 Michael Oates
mike@ph.u-net.com
Re: last report...

Forget it, just noise, sorry.
Michael Oates
Jan 23 2001 10:38:46 Scarmato Toni
toniscarmato@libero.it
Possible comet on 512x512 (0,0) top-left corner

LASCO C2 starting at following position:

2001/01/23 08:30 (431,507)

Other information at next post.

Regards,

Toni Scarmato
Jan 23 2001 10:50:47 Scarmato Toni
toniscarmato@libero.it
The other positions of the object last post are the 

following:

2001/01/23 08:54 (430,504)
2001/01/23 09:06 (427,502)
2001/01/23 09:30 (424,498)


Comment:

The object seem diffuse and faint. I am not sure on
this object.

Regards,

Toni Scarmato
Jan 23 2001 12:15:23 Scarmato Toni
toniscarmato@libero.it
Possible comet on 4 consecutive LASCO C3 images

512x512 (0,0) top-left corner at following positions:


2001/01/23 08:18 (235,449)
2001/01/23 08:42 (235,448)
2001/01/23 09:18 (235,447)
2001/01/23 09:42 (235,446)

Comment:

Point of ligth well visible on all the images.

I not have other images at this moment.


Regards,

Toni Scarmato
Jan 23 2001 16:16:32 michael boschat
aa063@chebucto.ns.ca
Possible sungrazer in C3 images - 20010123_1742 UT


Date: January 23, 2001

Coordinates next post.

Brief description of comet:

Not sure, could be "noise",
comes out of bottom slightly
to left of pylon.

Here are the (approximate) XY coordinates of
the object.

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


0,460 in lower left corner

LASCO C3 IMAGES

Date & UT Size X and Y
of Images used Coordinates
--------------------------------------------
20010123_1742.gif 1024 x 1024 94, 266
20010123_1818.gif 1024 x 1024 103, 259
20010123_1842.gif 1024 x 1024 109, 255
20010123_1942.gif 1024 x 1024 119, 248

-------
Michael Boschat
Jan 23 2001 17:12:51 Doug Biesecker
doug@sungrazer.nascom.nasa.gov

A few orders of business:

1) Thus far I cannot confirm the report by M. Boschat of a comet
in C3 beginning at 1742 UT on January 23rd. If there is indeed
a comet there, it should turn out to be very bright, because the
reported position is 31 solar radii out.

2) I've taken a lot of time to consider the M. Oates claims for
C2 comets on 2000/06/10 and 2000/06/23 and in the end I've
rejected both claims.

3) I cannot confirm R. Gore's claim for a comet in 2000/07/01 C3
data. I just don't see anything there. I'll try to follow up
on this.

4) I cannot confirm either of the T. Scarmato claims for Jan 23rd.
I suspect once again just random cosmic ray hits.

5) Here's the `official' numbering of the most recent comets

SOHO # Discoverer Date
----------------------------------
285 M. Oates 2000/06/11
286 M. Oates 2000/07/04
287 M. Oates 2000/04/30
288 M. Oates 2000/05/04
289 M. Oates 2000/04/17
290 M. Boschat 2001/01/14
291 D. Biesecker 2000/04/30

Doug
Jan 24 2001 02:40:54 Terry Lovejoy
lovejoyt@ozemail.com.au
Message to Michael Boschat,


Michael, in all your posts you give coordinates
with lower left at 0,460.

I assume you mean 0,0?

Regards,

Terry
Jan 24 2001 04:49:52 Sebastian Hoenig
sfhoenig@aol.com
Hi all,


this time I don't want to claim a comet but have a look at a
current C3 transit.

I think I could spot Neptune in C3 images of Jan, 21. At the
moment it disappeared behind the solar disc so it is not visible
in real-time images of today or yesterday.

I have measured the following positions:
(0,0) upper left, 1024 x 1024

Time (x,y)

17:18 247,454
17:42 248,454
18:42 250,455
20:42 256,455
21:42 258,455
22:18 260,455

Note that it is quite faint but fairly visible as it has some
pixels extension.

Perhaps Doug may confirm this.

Regards, Sebastian
Jan 24 2001 08:29:25 Scarmato Toni
toniscarmato@libero.it
This suspect object most probably are cosmic ray, but seem

moving on a reliable way.

LASCO C2 image 512x512 (0,0) top-left corner

2001/01/24 03:06 (2,458)
2001/01/24 03:30 (5,453)
2001/01/24 03:54 (9,447)

At this moment I not have other images to confirm the
observation.


Regards,

Toni Scarmato
Jan 24 2001 09:32:06 Scarmato Toni
toniscarmato@libero.it
Doug


Regarding my last post I Have observed another point on
image at 2001/01/24 02:54 at position (1,460) that seem
in agreement with other positions, shape and brigthness.

Unfortunately the next image is at 2001/01/24 07:31.


Regards,

Toni Scarmato
Jan 24 2001 11:19:32 michael boschat
aa063@chebucto.ns.ca
Possible sungrazer in C3 images - 20010124_1118 UT


Date: January 24, 2001

Coordinates next post.

Brief description of comet:

A bright object to the
right of the Sun in a 5 hour
span..noise?

Michael Boschat
Jan 24 2001 11:22:57 michael boschat
aa063@chebucto.ns.ca
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.


0,460 in lower left corner

LASCO C3 IMAGES

Date & UT Size X and Y
of Images used Coordinates
--------------------------------------------
20010124_1118.gif 512 x 512 369, 150
20010124_1542.gif 512 x 512 368, 141

Michael Boschat
Jan 24 2001 11:37:25 michael boschat
aa063@chebucto.ns.ca
DIS-REGARD LAST POST---

It was ... "NOISE"...

Sorry

Mike B.
Jan 24 2001 11:38:31 Doug Biesecker
doug@sungrazer.nascom.nasa.gov
1) The positions that Michael Boschat reports are relative to

(0,460). Subtract his reported y-position from 460 and you'll
get the correct coordinate for a (0,0) system.

2) Sebastian, that is indeed Neptune. Thanks for pointing it out.
I was supposed to be watching out for that, but forgot.

3) Toni, the data points on images from 02:54-03:54 meet the
minimum requirements. Unfortunately, there is nothing visible
from 04:06 onwards, despite the `object' brightening in previous
images. So, once again, no comet.

4) Mike Boschat. Haven't looked at your claim, but since you say
it's noise, I'll ignore it.

Doug
Jan 24 2001 11:43:49 Michael Oates
mike@ph.u-net.com
Comet in C3 realtime images


I don't know if this is the same that has been reported but the positions are not the same.

It's is quite a few images but possitions for 2 are here.
0,0 in bottom left of 1024 images

Image Col Row
20010124_0518_c3.gif
.
.
20010124_0818_c3.gif
20010124_0918_c3.gif
20010124_0942_c3.gif
20010124_1042_c3.gif 224 366
20010124_1118_c3.gif 219 362
20010124_1542_c3.gif

Michael Oates
Jan 24 2001 11:49:51 michael boschat
aa063@chebucto.ns.ca
Possible sungrazer in C3 images - 20010124_1542 UT


Date: January 24, 2001

Not much variation in
brightness or shape... possible

Having severe connections problems
sending this off now in case
systems crash..

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.


0,460 in lower left corner

LASCO C3 IMAGES

Date & UT Size X and Y
of Images used Coordinates
--------------------------------------------
20010124_1542.gif 1024 x 1024 263, 67
20010124_1618.gif 1024 x 1024 268, 63

Mike Boschat
Jan 24 2001 11:56:37 Michael Oates
mike@ph.u-net.com
Comet in C3 realtime images

UPDATE more positions, note I had transposed the Row figures
in the previous report

I don't know if this is the same that has been reported but the
positions are not the same.

It's is quite a few images but possitions for 2 are here.
0,0 in bottom left of 1024 images

Image Col Row
20010124_0518_c3.gif
.
.
20010124_0818_c3.gif
20010124_0918_c3.gif 209 353
20010124_0942_c3.gif 212 356
20010124_1042_c3.gif 224 362
20010124_1118_c3.gif 219 366
20010124_1542_c3.gif

Michael Oates
Jan 24 2001 12:01:55 Xavier Leprette
xavier.leprette@education.gouv.fr
Possible sungrazing comet in a real-time C3 images now.


It is visible from 2001/01/24 from 15:42 till 16:42 UT in 3 consecutive images
at the South-East quarter to the left of the pylone.
The object is moving towards the sun.

I'm not sure that it's a real object so, I'm waiting for an another image to confirm my report.
Positions in a next e-mail.

Xavier Leprette
Jan 24 2001 12:03:18 michael boschat
aa063@chebucto.ns.ca
It's on 3 images now! I'm more confident now.


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


0,460 in lower left corner

LASCO C3 IMAGES

Date & UT Size X and Y
of Images used Coordinates
--------------------------------------------
20010124_1542.gif 1024 x 1024 263, 67
20010124_1618.gif 1024 x 1024 268, 63
20010124_1642.gif 1024 x 1024 271, 59
---
Michael Boschat
Jan 24 2001 12:07:04 Sebastian Hoenig
sfhoenig@aol.com
I can confirm the reported objects. But sorry Mike B, I think it

is the same object Mike O reported earlier... :-((

Sebastian
Jan 24 2001 12:23:48 Xavier Leprette
xavier.leprette@education.gouv.fr
Possible sungrazing comet in a real-time C3 images 

(More information about the previous message)

The suspect object looks like a slighltly bright and fuzzy point without tail, but
the shape seems not very coherent. Maybe it is only some noise?
It is visible in 3 consecutive images the 2001/01/24

Approximate positions measured from the top-left corner
of a 1024x1024 frames :
col, row
15:42 UT 263,626
16:18 UT 268,621
16:42 UT 271,618

Xavier Leprette
Jan 24 2001 12:37:12 Xavier Leprette
xavier.leprette@education.gouv.fr
Possible sungrazing comet in a real-time C3 images (

from 2000/01/24

It seems that the suspect object is also visible at 17:18 UT and that the
moving is coherent.

Xavier Leprette
Jan 24 2001 12:37:47 Sebastian Hoenig
sfhoenig@aol.com
Some explanation:


The reason why I think Mike O's report spots the same object than
Mike B's (and meanwhile Xavier') is that if you follow up the
positions of Mike O in the images before the break ("relative
movement") you will come to those of Mike B and Xavier.

Sebastian
Jan 24 2001 13:18:57 Doug Biesecker
doug@sungrazer.nascom.nasa.gov

Yes, the reports by M. Oates, M. Boschat and X. Leprette are
all the same comet. My position measurements are given below.

This one is brighter than average. And almost exactly one year
after SOHO-97. Wow, almost 200 comets discovered (not observed)
in the past year. This is SOHO-292.

Doug

#COMMENT: COMET SOHO-292
# HEIGHT DATE TIME ANGLE TEL FC COL ROW
20.31 2001/01/24 09:18:05 119.9 C3 10 207.0 352.0
19.97 2001/01/24 09:42:05 119.9 C3 10 212.0 355.0
19.42 2001/01/24 10:42:09 119.4 C3 10 219.0 362.0
19.01 2001/01/24 11:18:05 119.3 C3 10 225.0 366.0
16.30 2001/01/24 15:42:05 117.6 C3 10 262.0 397.0
15.79 2001/01/24 16:18:05 117.2 C3 10 269.0 403.0
15.51 2001/01/24 16:42:05 117.0 C3 10 273.0 406.0
Jan 24 2001 21:20:11 michael boschat
aa063@chebucto.ns.ca
Is todays comet in the C2 field yet?

It's 0200 UT here...

reply private email...

Mike
Jan 25 2001 04:55:58 Sebastian Hoenig
sfhoenig@aol.com
Possible comet in LASCO C3, starting 20010125_0818_c3.gif


Date: Jan, 25 2001

Description:
faint dot of light moving towards the sun near the positions of
SOHO-292

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

Time (x,y)

08:18 300,609
08:42 303,606
09:18 308,602

I will consider further images when they are available.


Sebastian Hoenig
Jan 25 2001 06:45:25 Sebastian Hoenig
sfhoenig@aol.com
UPDATE OF MY LAST REPORT: (cf. Jan 25 2001 04:55:58)


Possible comet in LASCO C3, starting 20010125_0742_c3.gif

Date: Jan, 25 2001

Description:
Dot of light moving towards the sun near the positions of
SOHO-292. It seems that they may linked.

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

Time (x,y)

07:42 296,613 20010125_0742_c3.gif
08:18 300,609 20010125_0818_c3.gif
08:42 303,606 20010125_0842_c3.gif
09:18 308,602 20010125_0918_c3.gif
09:42 (*) 20010125_0942_c3.gif
10:42 315,594 20010125_1042_c3.gif
11:18 319,588 20010125_1118_c3.gif

(*) The 9:42 position estimated from the other positions leads
to a pixel that is dark in any of the images (cool pixel?)

Positions from all consecutive images available so far.
Confidence: Well, I don't know...

Sebastian Hoenig
Jan 25 2001 07:19:20 Sebastian Hoenig
sfhoenig@aol.com
I withdraw my last report(s). Positions seem to inconsitant and

the object seems to fade too much.

Regards to all,

Sebastian
Jan 25 2001 07:27:14 Scarmato Toni
toniscarmato@libero.it
Possible Comet on 4 consecutive LASCO C2 512x512 (0,0) 

top-left corner images starting at following position:


2001/01/25 00:54 (16,462)?

Other exact positions at next mail.

Regards,

Toni Scarmato
Jan 25 2001 07:41:17 Scarmato Toni
toniscarmato@libero.it
Possible Comet on 4 consecutive LASCO C2 512x512 (0,0) 

top-left corner images starting at following position:


Complete approximate positions my last post.

2001/01/25 00:54 (16,462)
2001/01/25 01:31 (31,449)
2001/01/25 01:54 (56,437)
2001/01/25 02:06 (65,430)


I not have other consecutive images at this moment.

Regards,

Toni Scarmato
Jan 25 2001 08:11:11 Scarmato Toni
toniscarmato@libero.it
Doug


excuse me, but because I am working out my office
the positions of the my last post are approximate of
some pixels. If I can post other most exact positions I send
another e-mail.

Regards,

Toni Scarmato
Jan 25 2001 11:09:48 Doug Biesecker
doug@sungrazer.nascom.nasa.gov

Hi all,

I cannot confirm the T. Scarmato claim for 2001/01/25 in C2.

Also, I cannot find SOHO-292, the M. Oates discovery from yesterday
in C2. It should have entered the C2 FOV sometime after 0400 UT.
I'm not too surprised it's not visible. But, feel free to try
to find it yourself.

Doug
Jan 25 2001 14:04:01 michael boschat
aa063@chebucto.ns.ca
Possible sungrazer in C3 images - 20010125_1642 UT


Coordinates next post.

Brief description of comet:

faint if one.

Michael Boschat
Jan 25 2001 14:14:47 michael boschat
aa063@chebucto.ns.ca
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.


0,460 in lower left corner

LASCO C3 IMAGES

Date & UT Size X and Y
of Images used Coordinates
--------------------------------------------
20010125_1618.gif 1024 x 1024 244, 137
20010125_1642.gif 1024 x 1024 250, 133
20010125_1742.gif 1024 x 1024 251, 128
20010125_1818.gif 1024 x 1024 255, 126
20010125_1842.gif 1024 x 1024 256, 121

Mike B.
Jan 25 2001 22:14:13 michael boschat
aa063@chebucto.ns.ca
Possible sungrazer in C3 images - 20010126_0218 UT


Coordinates next post.

Brief description of comet:

Point of light, probally
noise..not heading to Sun
but slight angle away.

Michael Boschat
Jan 25 2001 22:31:22 michael boschat
aa063@chebucto.ns.ca
Disregard my last post - "noise"


This is unusal, on the 1024
images the "point" stays at
a fairly uniform brightness, but when
looking at the 512 images it is
brighter on one image and slightly
fades on the second image. Why?

Mike B.
Jan 26 2001 07:55:26 Scarmato Toni
toniscarmato@libero.it
Suspect object starting at following position

on 512x512 image LASCO C3:

2001/01/26 03:18 (108,368)


Other positions at next post.


Regards,

Toni Scarmato
Jan 26 2001 08:11:44 Scarmato Toni
toniscarmato@libero.it
Complete set of positions regardinag my last post.


LASCO C3 512x512 (0,0) top-left corner:


2001/01/26 02:42 (105,372)
2001/01/26 03:18 (106,371)
2001/01/26 03:42 (107,370)
2001/01/26 04:18 (108,368)
2001/01/26 04:42 (109,367)
2001/01/26 05:18 (110,366)?

In the last image the point seem fading.
I am not sure.....probably noise.


Regards,

Toni Scarmato

Jan 26 2001 08:32:06 Scarmato Toni
toniscarmato@libero.it
Doug,

I am waiting another image to confirm this report, because
the position are only 4 consecutive.
The point seem moving toward the sun and not vary in shape
and brigthness.

LASCO C3 512x512 (0,0) top-left corner:

2001/01/26 11:18 (189,285)
2001/01/26 11:42 (191,284)
2001/01/26 12:18 (193,283)
2001/01/26 12:42 (195,282)

Faint obeject near the disk

Regards,

Toni
Jan 26 2001 10:08:23 Scarmato Toni
toniscarmato@libero.it
Doug,


I am not been able to confirm my last report using
the image at 2001/01/26 14:18.
I think that is noise.

Instead I Have observed another point that seem visible on
5 consecutive images 512x512 (0,0) top-left croner LASCO C3
at following positions:


2001/01/26 11:18 (200,285)
2001/01/26 11:42 (201,284)
2001/01/26 12:18 (202,283)
2001/01/26 12:42 (203,282)
2001/01/26 14:18 (206,280)


I am not sure on this object........


Regards,

Toni
Jan 26 2001 10:23:38 Scarmato Toni
toniscarmato@libero.it
Doug,


this object is well visible on two images LASCO C3 512x512
(0,0) top-left corner at following positions:


2001/01/26 12:42 (300,368)
2001/01/26 14:18 (298,364)


Seem to move toward the sun. If it is real will be visible
on other next images.

Regards,

Toni

Jan 26 2001 10:48:53 Scarmato Toni
toniscarmato@libero.it
Doug,


regarding my last post, on image at 2001/01/26 15:18
the object is not visible.


Regards,

Toni
Jan 26 2001 11:20:39 Scarmato Toni
toniscarmato@libero.it
Suspect object on two LASCO C2 512x512 (0,0) top-left

corner.

Positions:

2001/01/26 14:06 (496,389)
2001/01/26 15:06 (485,381)


I am waiting other images to confirm


Regards,

Toni Scarmato
Jan 26 2001 11:26:36 Scarmato Toni
toniscarmato@libero.it
Doug,


not to consider my last post.
On image at 2001/01/26 15:30 the object is not visible.


Toni
Jan 28 2001 11:14:58 Scarmato Toni
toniscarmato@libero.it
Dear Doug, dear all,


I Have observed an object in archive images on 2000/08/17
LASCO C2, that probably is a combination of cosmic rays,
but I want know, if it si possible, your comment.

Position on 4 images 1024x1024 (0,0) top-left corner:

2000/08/17 00:30 (740,873)
2000/08/17 00:54 (734,867)
2000/08/17 01:31 (728,860)
2000/08/17 01:54 (722,854)

The object move toward the sun on a reliable orbit, but
is diffuse on the first image, and became
faint on the last image.


Regards,

Toni Scarmato
Jan 28 2001 11:21:47 Scarmato Toni
toniscarmato@libero.it
Possible comet on LASCO C2 image 512x512 (0,0) tp-left corner

visble on 5 image and brigth on


2001/01/28 11:42 (192,349)

More information at next post.


Regards,

Toni Scarmato
Jan 28 2001 11:47:13 Scarmato Toni
toniscarmato@libero.it
Doug,


regarding my last post I think that the object is a
combinations of cosmic rays because the other positions
seem not in agreement.

Regards,

Toni Scarmato
Jan 29 2001 02:07:39 Scarmato Toni
toniscarmato@libero.it
Dear Doug,


Finally this morning I can post the observation.
Only one object seem to be real, but I am not sure because
there is too noise.
Positions of 8 consecutive images LASCO C3 512x512 (0,0)
top-left corner:

2001/01/28 15:18 (246,363)
2001/01/28 15:42 (243,360)
2001/01/28 16:18 (241,358)
2001/01/28 16:42 (240,356)
2001/01/28 17:18 (238,354)
2001/01/28 17:42 (237,352)
2001/01/28 18:18 (236,350)
2001/01/28 18:42 (235,348)

Faint object moving toward the sun.

Regards,

Toni Scarmato
Jan 29 2001 14:59:31 Paolo Laquale
paololaq@tin.it
Dear Doug,

it's the first time that i submit my reports and i'm not sure if it's correct.
The ipotethical object that i suppose to be a comet, is in the following images and positions ( the x-y coordinates are 0-0 above
left):
20010129_1642_c3 (512X512) at x=350 ; y=388 (faint)
20010129_1718_c3 (512X512) at x=386 ; y=378 (bright, near the sun flares)
20010129_1742_c3 (512X512) at x=484 ; y=376
20010129_1818_c3 (512X512) at x=516 ; y=406 (near the coronograph)

please send an answer

Regards Paolo Laquale
Jan 29 2001 17:05:39 Doug Biesecker
doug@sungrazer.nascom.nasa.gov
I am unable to confirm any of the reports made since my last

posting. Let me repeat again, if you do not see the object in
at least 4 frames, do not post it. Yes, there are exceptions,
but those are rare. I don't want everybody posting after 1 or
2 frames on suspicious points.

Doug
Jan 30 2001 11:27:24 Sebastian Hoenig
sfhoenig@aol.com
PREPOST: Possible comet(s ??) in LASCO C3


Image: 20010130_1518_c3.gif


Positions (x,y): 1st: 166, 729 2nd: 138, 756

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

More information in next post.

Sebastian Hoenig

Jan 30 2001 11:30:12 Sebastian Hoenig
sfhoenig@aol.com
Disregard last post. I took 3 images of different days. I think I should be aware of this....


SORRY, SORRY, SORRY...

Sebastian

Jan 31 2001 02:39:37
 
Jan 31 2001 08:42:35 Scarmato Toni
toniscarmato@libero.it
Suspect object visible on 5 consecutive LASCO C2 image

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

Positions:

2001/01/31 23:30 (104,2)
2001/01/31 23:54 (106,4)
2001/01/31 00:06 (107,5)
2001/01/31 00:30 (109,7)
2001/01/31 00:54 (111,9)

The object seem moving slowly.


Regards,

Toni Scarmato
Jan 31 2001 10:36:00 Scarmato Toni
toniscarmato#libero.it
Sorry, Doug,

in my last report the date of the first two positions is

2001/01/30.

This is the correct set of position:

2001/01/30 23:30 (104,2)
2001/01/30 23:54 (106,4)
2001/01/31 00:06 (107,5)
2001/01/31 00:30 (109,7)
2001/01/31 00:54 (111,9)


Excuse me again.

Toni Scarmato
Jan 31 2001 16:58:28 lovejoy terry
lovejoyt@ozemail.com.au
toni,


I don't see anything in the 1024x1024 C2 images for early
Jan 31 UT.

Terry