SOHO-LASCO Comet Reports for 201902

Feb 03 2019 13:23:43 Masanori Uchina

Potential comet:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
2019/2/3
   Kreutz group comet.
1630  222  676
1642  223  675
1654  224  674
1706  225  674
--Masanori Uchina
Feb 04 2019 04:40:36 Masanori Uchina

Retracting my claim of:
Images: C3; 2019/2/3     13:23:43
--Masanori Uchina
Feb 06 2019 16:58:46 Worachate Boonplod

Potential comet:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
2019-02-06
   Kreutz group comet.
1542  254  725
1554  255  723
1606  257  722
1618  259  720
1654  265  715
2130  308  674
--Worachate Boonplod
Feb 06 2019 17:05:05 Worachate Boonplod

Further to my post of...
Images: C3; 1024x1024 images.
(0,0) Upper Left.
2019-02-06     16:58:46
Kreutz group comet.
1418  242  735
1430  243  735
1442  245  734
1510  249  730
1520  251  728
1531  253  726
--Worachate Boonplod
Feb 07 2019 04:50:32 Peter Berrett

Potential comet:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
20190207
   Kreutz group comet.
0906  67  348
0918  68  345
0930  69  342
--Peter Berrett
Feb 07 2019 04:58:23 Peter Berrett

Correction:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
20190207     04:50:32
Kreutz group comet.
0906  67  860
0918  68  857
0930  69  854
--Peter Berrett
Feb 07 2019 05:43:47 Peter Berrett

Retracting my claim of:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
20190207     04:50:32
--Peter Berrett
Feb 07 2019 12:57:19 Szymon Liwo

Confirming comet of:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
2019-02-06     16:58:46
Kreutz group comet.
--Szymon Liwo
Feb 08 2019 01:32:46 Masanori Uchina

Potential comet:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
2019/2/8
   Kreutz group comet.
0506  173  743
0518  175  740
0530  177  739
0542  179  738
--Masanori Uchina
Feb 08 2019 23:50:48 Masanori Uchina

Retracting my claim of:
Images: C3; 2019/2/8     01:32:46
--Masanori Uchina
Feb 09 2019 16:56:55 Ziheng Zhang

Possible fragment/companion:
Images: C3; 512x512 b/w images.
(0,0) Lower Right.
01/01/2011     3
Non-group comet.
3  3  3
3  3  3
3  3  3
3  3  3
3  3  3
3  3  3
--Ziheng Zhang
Feb 09 2019 19:31:06 Peter Berrett

Potential comet:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
20190209
   Kreutz group comet.
2330  391  592
2342  392  590
2354  394  589
--Peter Berrett
Feb 09 2019 19:38:07 Peter Berrett

Further to my post of...
Images: C3; 1024x1024 images.
(0,0) Upper Left.
20190209     19:31:06
Kreutz group comet.
2218  387  597
--Peter Berrett
Feb 09 2019 20:22:45 Peter Berrett

Further to my post of...
Images: C3; 1024x1024 images.
(0,0) Upper Left.
20190209     19:31:06
Kreutz group comet.
0006  396  587
--Peter Berrett
Feb 10 2019 04:24:16 Worachate Boonplod

Potential comet:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
2019-02-10
   Kreutz group comet.
0842  261  705
0906  265  702
0918  266  700
--Worachate Boonplod
Feb 10 2019 05:14:59 Szymon Liwo

Potential comet:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
20190210
   Kreutz group comet.
0942  308  664
0954  310  662
1006  312  660
--Szymon Liwo
Feb 10 2019 05:17:10 Szymon Liwo

Confirming comet of:
Images: C3; 2019-02-10     04:24:16
Kreutz group comet.
--Szymon Liwo
Feb 10 2019 05:48:52 Szymon Liwo

Further to my post of...
Images: C3; 20190210
   Kreutz group comet.
1018  314  658
1030  316  656
1042  319  654
--Szymon Liwo
Feb 10 2019 05:52:44 Szymon Liwo

Further to my post of...
20190210     05:14:59
1018  314  658
1030  316  656
1042  319  654
--Szymon Liwo
Feb 10 2019 06:00:47 Worachate Boonplod

Confirming comet of:
Images: C3; 2019-02-10     05:14:59
Kreutz group comet.
--Worachate Boonplod
Feb 10 2019 21:48:26 Worachate Boonplod

Potential comet:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
2019-02-11
   Kreutz group comet.
0206  239  726
0218  241  724
0230  243  723
0242  245  721
--Worachate Boonplod
Feb 10 2019 23:21:15 Worachate Boonplod

Further to my post of...
Images: C3; 1024x1024 images.
(0,0) Upper Left.
2019-02-11     21:48:26
Kreutz group comet.
0306  248  717
0318  250  716
0330  252  715
0342  254  713
0354  256  711
0406  258  709
--Worachate Boonplod
Feb 11 2019 06:18:37 Worachate Boonplod

Further to my post of...
Images: C3; 1024x1024 images.
(0,0) Upper Left.
2019-02-11     21:48:26
Kreutz group comet.
0906  309  666
0918  311  664
0930  313  662
0942  315  660
1006  319  656
1018  322  655
--Worachate Boonplod
Feb 11 2019 23:57:01 Szymon Liwo

Confirming comet of:
Images: C3; 2019-02-11     21:48:26
Kreutz group comet.
--Szymon Liwo
Feb 12 2019 04:16:33 Peter Berrett

Potential comet:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
20190211
   Non-group comet.
1342  216  747
1354  216  744
1406  216  742
1418  216  739
1430  216  736
1442  216  733
--Peter Berrett
Feb 13 2019 12:25:41 Masanori Uchina

Potential comet:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
2019/2/13
   Kreutz group comet.
1606  316  653
1618  318  652
1630  320  651
1642  322  650
--Masanori Uchina
Feb 13 2019 14:10:04 Masanori Uchina

Retracting my claim of:
Images: C3; 2019/2/13     12:25:41
--Masanori Uchina
Feb 16 2019 05:14:04 Peter Berrett

Potential comet:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
20190216
   Non-group comet.
0906  45  813
0918  48  810
0930  50  807
--Peter Berrett
Feb 16 2019 05:28:31 Peter Berrett

Further to my post of...
Images: C3; 1024x1024 images.
(0,0) Upper Left.
20190216     05:14:04
Non-group comet.
0906  45  813
0918  48  810
0930  50  807
0942  52  805
--Peter Berrett
Feb 16 2019 06:00:17 Masanori Uchina

Potential comet:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
2019/2/16
   Kreutz group comet.
0918  229  707
0930  231  706
0942  233  704
0954  236  702
--Masanori Uchina
Feb 16 2019 06:29:31 Peter Berrett

Potential comet:
Images: C2; 1024x1024 images.
(0,0) Upper Left.
20190216
   Non-group comet.
0948  278  415
1000  312  389
1012  346  376
1024  377  367
--Peter Berrett
Feb 16 2019 06:45:29 Peter Berrett

Potential comet:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
20190216
   Kreutz group comet.
1012  389  637
1018  393  628
1030  399  620
--Peter Berrett
Feb 16 2019 16:20:53 Masanori Uchina

Retracting my claim of:
Images: C3; 2019/2/16     06:00:17
--Masanori Uchina
Feb 16 2019 19:10:15 Peter Berrett

Retracting my claim of:
Images: C3; 1024x1024 images.
20190216     06:45:29
--Peter Berrett
Feb 16 2019 19:33:37 Peter Berrett

Potential comet:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
20190216
   Kreutz group comet.
2230  310  130
2306  317  128
2318  319  128
2330  321  127
--Peter Berrett
Feb 16 2019 19:34:51 Peter Berrett

Correction:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
20190216     19:33:37
Kreutz group comet.
2230  310  642
2306  317  640
2318  319  640
2330  321  639
--Peter Berrett
Feb 16 2019 19:43:56 Peter Berrett

Retracting my claim of:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
20190216     19:33:37
Kreutz group comet.
--Peter Berrett
Feb 18 2019 04:16:32 Peter Berrett

Potential comet:
Images: C2; 1024x1024 images.
(0,0) Upper Left.
20190201
   Meyer group comet.
0912  73  76
0924  83  69
0936  92  63
0948  100  58
--Peter Berrett
Feb 18 2019 06:30:31 Peter Berrett

Potential comet:
Images: C2; 1024x1024 images.
(0,0) Upper Left.
20190213
   Non-group comet.
1537  210  474
1548  235  481
1600  266  484
1612  284  472
1624  301  453
1636  301  432
--Peter Berrett
Feb 18 2019 12:17:31 Michal Kusiak

Potential comet:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
20190218
   Kreutz group comet.
1606  334  655
1618  337  653
1706  348  646
--Michal Kusiak
Feb 18 2019 14:51:18 Masanori Uchina

Potential comet:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
2019/2/18
   Kreutz group comet.
1606  181  689
1618  183  687
1706  185  686
1718  187  685
--Masanori Uchina
Feb 19 2019 03:24:09 Peter Berrett

Potential comet:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
20190219
   Non-group comet.
0242  253  656
0306  248  646
0318  246  641
0330  243  636
0342  241  632
--Peter Berrett
Feb 19 2019 03:40:19 Peter Berrett

Potential comet:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
20190219
   Non-group comet.
0242  256  126
0306  258  128
0318  259  129
0330  260  130
0342  261  131
--Peter Berrett
Feb 19 2019 03:41:43 Peter Berrett

Correction:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
20190219     03:40:19
Non-group comet.
0242  256  638
0306  258  640
0318  259  641
0330  260  642
0342  261  643
--Peter Berrett
Feb 19 2019 06:00:15 Masanori Uchina

Retracting my claim of:
Images: C3; 2019/2/18     14:51:18
--Masanori Uchina
Feb 19 2019 12:24:53 Dr Sungrazer

Hi All,

These conclude the SOHO and STEREO discoveries for 2018:

STEREO:
ID#   Report Date/Time MSG#   Discoverer(s)  CAMS   Group   Images of...
--------------------------------------------------------------------------
0107  Dec24,18 17:13  email  T.Prestgard     HI-1   Kreutz  Dec23,18
0108  Jan01,19 07:11  email  T.Prestgard     HI-1   Kreutz  Dec28,18
0109  Jan01,19 07:11  email Prestgard/Uchina HI-1   Kreutz  Dec29,18
0110  Jan02,19 18:10  email  T.Prestgard     HI-1   Kreutz  Dec31,18

SOHO:
Soho#  Date/Time of Post  Discoverer     Tel    Group   Images of...
=====================================================================
3662  Dec01,18 04:17:25	  Boonplod,Tan   C2     Kreutz  Dec01,18
3663  Dec01,18 14:19:34	  H.Tan         H1,C2   Kreutz  Dec01,18
3664  Dec04,18 04:07:34   W.Boonplod     C2     Marsden Dec04,18
3665  Dec05,18 03:58:08	  H.Tan         H1,C2   Kreutz  Dec04-05,18
3666  Dec06,18 05:47:24   W.Boonplod  H1,C3,C2  Kreutz  Dec05-06,18
3667  Dec07,18 15:28:30   R.Kracht       C2     NonGrp  Dec07,18
3668  Dec09,18 10:48:36   H.Tan         H1,C2   Kreutz  Dec09,18
3669  Dec09,18 12:13:55	  W.Boonplod  H1,C3,C2  Kreutz  Dec09-10,18
3670  Dec10,18 14:57:31   W.Boonplod  H1,C3,C2  Kreutz  Dec10-12,18
3671  Dec12,18 12:26:57	  W.Boonplod  H1,C3,C2  Kreutz  Dec12-13,18
3672  Dec12,18 14:57:31	  W.Boonplod   H1,C2    Kreutz  Dec12,18
3673  Dec13,18 01:35:54	  M.Uchina    H1,C3,C2  Kreutz  Dec12-13,18
3674  Dec14,18 10:51:29	  W.Boonplod   H1,C2    Kreutz  Dec13-14,18
3675  Dec19,18 03:28:05	  W.Boonplod  H1,C3,C2  Kreutz  Dec18-19,18
3676  Dec21,18 22:56:02   W.Boonplod   H1,C2    Kreutz  Dec21-22,18
3677  Dec24,18 16:54:07	  M.Uchina     H1,C2    Kreutz  Dec23-24,18

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

In addition to the STEREO comets confirmed, I did receive reports of
three others on 12/24 from Trygve, but I can not confirm them. Also,
Masanori has suggested that his report from Dec30,18 05:21:10 could
be STEREO-109 in C3. This was very difficult to judge, because I can
only see *something* in five or six of the C3 images, and certainly
not enough that I would be able to confirm it as a SOHO comet. I would
be able to confirm the C3 comet if the positions lined up with #S-109
but the timing is not ideal. So I am going to stick with just listing
it as a HI-1 comet (joint discovery for Masanori and Trygve as they
both send me emails close to one another before it appeared on the
STEREOHunter page).

So that leaves us with 192 comets for 2018, which is quite low compared
to most years since 2010. Here are the discovery numbers for 2010-2018
for the Kreutz (Krz), Meyer (Myr). Non-group (NG) and total (TOT). 
(I intentionally left out the Kracht and Marsden groups as those numbers
are always quite low) 

YR:  2010   2011   2012   2013   2014   2015   2016   2017   2018
Krz: 190    196    191    198    163    181    158    202    170
Myr: 13     12     18     13     17     22     5      18     10 
NG:  7      7      13     8      11     15     4      5      5     
TOT: 214    220    229    220    196    221    167    226    192

I'm sure that much of the fluctuations are 'natural' but I do still
worry a little that most effort is dedicated to the Kreutz and that we
are missing some of the Meyer and non-group comets. So whenever you are
looking at the images, please take a few extra minutes to look for those
too.

As always, the efforts of everyone that contributes to this project are 
enormously appreciated and I promise that all of your discoveries will 
absolutely be published with orbits and designations. I will continue to 
keep pushing to make sure that happens.

Best wishes,
Karl
Feb 19 2019 15:47:04 Szymon Liwo

Potential comet:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
20190219
   Kreutz group comet.
1754  145  800
1806  146  798
1818  147  796
--Szymon Liwo
Feb 20 2019 12:03:24 Worachate Boonplod

Potential comet:
Images: C2; 1024x1024 images.
(0,0) Upper Left.
2019-02-20
   Meyer group comet.
1636  13  133
1648  27  120
1700  41  107
--Worachate Boonplod
Feb 20 2019 12:29:25 Worachate Boonplod

Further to my post of...
Images: C2; 1024x1024 images.
(0,0) Upper Left.
2019-02-20     12:03:24
Meyer group comet.
1712  55  96
1724  70  85
--Worachate Boonplod
Feb 20 2019 13:17:08 Rainer Kracht

Confirming comet of:
Images: C2; 2019-02-20      12:03:2
Meyer group comet.
--Rainer Kracht
Feb 21 2019 07:35:54 Masanori Uchina

Potential comet:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
2019/2/21
   Kreutz group comet.
1106  216  746
1118  217  745
1130  218  744
--Masanori Uchina
Feb 21 2019 17:15:58 Masanori Uchina

Retracting my claim of:
Images: C3; 2019/2/21     07:35:54
--Masanori Uchina
Feb 22 2019 14:25:09 Dr Sungrazer

Hi All,

Here are all comets for January 2019:

STEREO:
ID#   Report Date/Time MSG#   Discoverer(s)  CAMS   Group   Images of...
------------------------------------------------------------------------
0107  Feb19,19 11:18  2674   K.Battams       HI-1   Kreutz  Dec23,18
0108  Jan01,19 12:45  2655   T.Prestgard     HI-1   Kreutz  Dec28,18
0109  Jan01,19 12:25  2652 Prestgard/Uchina  HI-1   Kreutz  Dec29,18
0110  Jan02,19 23:36  2657   T.Prestgard     HI-1   Kreutz  Dec31,18
0111  Jan06,19 17:58  2658   T.Prestgard     HI-1   Kreutz  Dec31,18
0112  Jan04,19 00:22  2659   M.Uchina        HI-1   Kreutz  Jan01,19
0113  Jan03,19 17:58  2658   T.Prestgard     HI-1   Kreutz  Jan01,19
0114  Jan04,19 18:09  2661   T.Prestgard     HI-1   Kreutz  Jan02,19
0115  Jan09,19 17:56  2663   T.Prestgard     HI-1   Kreutz  Jan07,19
0116  Jan09,19 17:56  2663   T.Prestgard     HI-1   Kreutz  Jan07,19
0117  Jan19,19 11:28  2665   T.Prestgard     HI-1   Kreutz  Jan15,19
0118  Feb02,19 09:29  2666   M.Uchina        HI-1   Kreutz  Jan19-20,19
0119  Feb03,19 03:53  2668   T.Prestgard     HI-1   Kreutz  Jan19,19

SOHO:
Soho#  Date/Time of Post  Discoverer     Tel    Group   Images of...
=====================================================================
3678  Jan05,19 11:05:46   R.Kracht      C2      Meyer   Jan05,19
3679  Jan18,19 16:38:18	  W.Boonplod    C3      NonGrp  Jan18,19
3680  Jan21,19 06:09:54   W.Boonplod   H1,C3    Kreutz  Jan19-21,19
3681  Jan22,19 00:09:57	  W.Boonplod  H1,C3,C2  Kreutz  Jan21-22,19
--

A correction: Trygve pointed out that he did NOT report STEREO-107, so
apparently that one does go to me. (I misread a report he'd send me for
Nov24.)

All of Trygve's reports here were also sent to me by email a few minutes
before he made the STEREOHunter posts. I've decided that where possible
I'll just use the STEREOHunter report # in my confirmations as it gives
you all something to refer to (as opposed to my emails, which obviously
you are not able to see). So I have updated the December discoveries to
show that info. Obviously in the case of #109, I received two emails but
will only refer to the first STEREOHunter report.

STEREO-115 and -116 were both reported in the same SOHOHunter message,
hence they both have the same discovery details. SOHO-116 is the second
and much fainter of Trygve's two discoveries in that report.

I can not confirm the comet reported in STEREOHunter #2664 (Trygve). It
was too faint, and I couldn't get enough observations of it.

It looks like the "Kreutz season" in HI-1 is now finished again until 
later this year (late October/ early November) but don't forget to look
occasionally to see if any non-group comets are showing up!

Best wishes,
Karl
Feb 22 2019 20:08:01 Peter Berrett

Retracting my claim of:
Images: C2; 1024x1024 images.
(0,0) Upper Left.
20190218     04:16:32
--Peter Berrett
Feb 23 2019 09:26:13 Szymon Liwo

Retracting my claim of:
20190219     15:47:04
--Szymon Liwo
Feb 23 2019 16:24:04 Masanori Uchina

Potential comet:
Images: C2; 1024x1024 images.
(0,0) Upper Left.
2019/2/23
   Meyer group comet.
1900  4  102
1912  22  92
1924  43  79
1936  59  68
--Masanori Uchina
Feb 23 2019 16:53:04 Masanori Uchina

Further to my post of...
Images: C2; 1024x1024 images.
(0,0) Upper Left.
2019/2/23     16:24:04
Meyer group comet.
1948  72  60
2000  88  51
2012  103  45
--Masanori Uchina
Feb 23 2019 19:25:51 Peter Berrett

Potential comet:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
20190223
   Non-group comet.
1554  160  849
1606  157  847
1618  156  845
1630  154  843
--Peter Berrett
Feb 23 2019 19:38:47 Peter Berrett

Further to my post of...
Images: C3; 1024x1024 images.
(0,0) Upper Left.
20190223     19:25:51
Non-group comet.
1642  152  841
1654  151  839
1706  149  837
--Peter Berrett
Feb 23 2019 23:36:56 Masanori Uchina

Further to my post of...
Images: C2; 1024x1024 images.
(0,0) Upper Left.
2019/2/23     16:24:04
Meyer group comet.
2024  115  36
2036  131  28
2048  145  22
2111  175  6
--Masanori Uchina
Feb 24 2019 04:38:50 Michal Kusiak

Confirming comet of:
Images: C2; 20190223     16:24:04
Meyer group comet.
--Michal Kusiak
Feb 24 2019 07:20:16 Peter Berrett

Retracting my claim of:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
20190223     19:25:51
--Peter Berrett
Feb 24 2019 16:17:51 Masanori Uchina

Potential comet:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
2019/2/24
   Kreutz group comet.
1954  111  865
2006  112  864
2018  114  863
--Masanori Uchina
Feb 25 2019 07:53:28 Masanori Uchina

Retracting my claim of:
Images: C3; 2019/2/24     16:17:51
--Masanori Uchina
Feb 25 2019 22:31:06 Masanori Uchina

Potential comet:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
2019/2/26
   Kreutz group comet.
0206  285  688
0218  289  686
0230  290  684
0242  292  683
--Masanori Uchina
Feb 26 2019 06:20:02 Masanori Uchina

Retracting my claim of:
Images: C3; 2019/2/26     22:31:06
--Masanori Uchina
Feb 26 2019 08:10:22 Peter Berrett

Potential comet:
Images: C2; 1024x1024 images.
(0,0) Upper Left.
20190226
   Non-group comet.
1100  220  1021
1112  238  1012
1124  256  1003
1136  275  994
1148  298  985
--Peter Berrett
Feb 26 2019 08:13:30 Peter Berrett

Retracting my claim of:
Images: C2; 1024x1024 images.
(0,0) Upper Left.
20190226     08:10:22
Non-group comet.
--Peter Berrett
Feb 27 2019 07:00:30 Peter Berrett

Potential comet:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
20190227
   Non-group comet.
0530  211  816
0618  212  816
0706  213  816
0754  214  816
0830  215  816
0918  216  816
--Peter Berrett
Feb 27 2019 07:39:02 Peter Berrett

Retracting my claim of:
Images: C3; 1024x1024 images.
(0,0) Upper Left.
20190227     07:00:30
Non-group comet.
--Peter Berrett
Feb 27 2019 14:00:07 Masanori Uchina

Potential comet:
Images: C2; 1024x1024 images.
(0,0) Upper Left.
2019/2/27
   Meyer group comet.
1800  121  52
1812  140  46
1824  154  40
--Masanori Uchina
Feb 27 2019 14:06:37 Masanori Uchina

Further to my post of...
Images: C2; 1024x1024 images.
(0,0) Upper Left.
2019/2/27     14:00:07
Meyer group comet.
1736  91  68
1748  103  60
--Masanori Uchina
Feb 28 2019 04:41:54 Masanori Uchina

Retracting my claim of:
Images: C2; 2019/2/27     14:00:07
--Masanori Uchina