SOHO Comets 2019

The table list the provisional number for the comet, the day (UT) and month of the first (discovery) observation, the year and comet identification, the LASCO or STEREO coronagraph on which it was discovered, the discoverer (additional names are independent discoverers), with the number of their discoveries given in brackets following the name, and finally the date of discovery.

SOHO Observed   Des C  G  Observers							Discovered
 107 28/12/2018     H1 K  Trygve Prestgard						January 1
 108 29/12/2018     H1 K  Trygve Prestgard, Masanori Uchina				January 1
 109 31/12/2018     H1 K  Trygve Prestgard						January 2
 112 01/01/2019     H1 K  Trygve Prestgard						January 3
 111 01/01/2019     H1 K  Masanori Uchina						January 3
 113 02/01/2019     H1 K  Trygve Prestgard						January 4
3678 05/01/2019     C2 Y  Rainer Kracht							January 5
 110 31/12/2018     H1 K  Trygve Prestgard						January 6
 114 07/01/2019     H1 K  Trygve Prestgard						January 9
 115 07/01/2019     H1 K  Trygve Prestgard						January 9
3679 18/01/2019     C3 O  Worachate Boonplod						January 18
 116 15/01/2019     H1 K  Trygve Prestgard						January 20
3680 21/01/2019     C3 K  Worachate Boonplod						January 21
3681 22/01/2019     C3 K  Worachate Boonplod						January 22
 117 19/01/2019     H1 K  Masanori Uchina						February 2
 118 19/01/2019     H1 K  Trygve Prestgard						February 3
3682 06/02/2019     C3 K  Worachate Boonplod						February 6
3683 10/02/2019     C3 K  Worachate Boonplod						February 10
3684 10/02/2019     C3 K  Szymon Liwo							February 10
3685 11/02/2019     C3 K  Worachate Boonplod						February 11
 106 23/12/2018     H1 K  Karl Battams							February 19
3686 20/02/2019     C2 Y  Worachate Boonplod						February 20
3687 23/02/2019     C2 Y  Masanori Uchina						February 23
3688 01/03/2019     C3 K  Worachate Boonplod						March 1
3689 03/03/2019     C3 K  Masanori Uchina						March 3
3690 08/03/2019     C3 K  Masanori Uchina						March 8
3691 10/03/2019     C2 K  Masanori Uchina						March 10
3692 12/03/2019     C3 K  Worachate Boonplod						March 12
3693 11/03/2019     C2 Y  Peter Berrett							March 12
3694 16/03/2019     C3 K  Masanori Uchina						March 16
3695 21/03/2019     C2 K  Masanori Uchina						March 21
3696 22/03/2019     C3 K  Worachate Boonplod						March 22
3697 23/03/2019     C2 K  Worachate Boonplod						March 23
3698 27/03/2019     C3 K  Szymon Liwo							March 27
3699 28/03/2019     C3 K  Worachate Boonplod						March 28
3700 29/03/2019     C2 Y  Szymon Liwo							March 29
3701 30/03/2019     C3 K  Worachate Boonplod						March 30
3702 31/03/2019     C3 K  Masanori Uchina						March 31
3703 31/03/2019     C3 K  Masanori Uchina						March 31
3704 16/05/2016     C2 O  Peter Berrett							April 27
3705 29/07/2016     C2 O  Peter Berrett							May 6
3706 01/04/2019     C3 K  Szymon Liwo							April 1
3707 03/04/2019     C3 K  Worachate Boonplod						April 3
   U 29/03/2019     C2 Y  Peter Berrett							April 4
3708 06/04/2019     C2 K  Worachate Boonplod						April 6
3709 07/04/2019     C3 K  Worachate Boonplod						April 7
3710 07/04/2019     C3 K  Worachate Boonplod						April 7
3711 08/04/2019     C3 K  Masanori Uchina						April 8
3712 08/04/2019     C2 K  Worachate Boonplod						April 8
3713 09/04/2019     C2 K  Masanori Uchina						April 9
   U 12/04/2019     C2 K  Masanori Uchina						April 12
3714 14/04/2019     C2 K  Masanori Uchina						April 14
3715 14/04/2019     C2 K  Worachate Boonplod						April 14
3716 17/04/2019     C2 K  Worachate Boonplod						April 17
3717 17/04/2019     C3 K  Worachate Boonplod						April 17
3718 19/04/2019     C2 K  Masanori Uchina						April 19
3719 22/04/2019     C3 K  Masanori Uchina						April 22
3720 23/04/2019     C3 K  Worachate Boonplod						April 23
3721 24/04/2019     C2 K  Worachate Boonplod						April 24
3722 24/04/2019     C2 R  Rainer Kracht							April 24
3723 25/04/2019     C2 K  Masanori Uchina						April 25
3724 26/04/2019     C2 K  Worachate Boonplod						April 26
3725 26/04/2019     C2 K  Worachate Boonplod						April 26
3726 27/04/2019     C2 K  Worachate Boonplod						April 28
3727 28/04/2019     C3 K  Worachate Boonplod						April 28
3728 30/04/2019     C2 K  Masanori Uchina						May 1
3729 29/04/2019     C2 K  Masanori Uchina						May 1
nnnn 02/05/2019     C2 K  Worachate Boonplod						May 3
nnnn 05/05/2019     C2 K  Masanori Uchina						May 5
nnnn 08/05/2019     C2 K  Masanori Uchina						May 8
nnnn 09/05/2019     C2 Y  Worachate Boonplod						May 9
nnnn 10/05/2019     C2 K  Worachate Boonplod						May 10
nnnn 10/05/2019     C3 K  Worachate Boonplod						May 10
nnnn 11/05/2019     C2 K  Worachate Boonplod						May 11
nnnn 13/05/2019     C2 Y  Worachate Boonplod						May 13
nnnn 15/05/2019     C2 K  Worachate Boonplod						May 15
nnnn 15/05/2019     C2 K  Masanori Uchina						May 16
nnnn 20/05/2019     C2 K  Worachate Boonplod						May 20
nnnn 21/05/2019     C2 K  Worachate Boonplod						May 21
nnnn 22/05/2019     C2 K  Worachate Boonplod						May 22
nnnn 22/05/2019     C2 K  Worachate Boonplod						May 22
nnnn 23/05/2019     C2 K  Worachate Boonplod, Szymon Liwo				May 23
nnnn 24/05/2019     C2 K  Worachate Boonplod						May 24
nnnn 26/05/2019     C2 K  Masanori Uchina						May 26
nnnn 25/05/2019     C2 K  Masanori Uchina						May 26
nnnn 27/05/2019     C3 K  Worachate Boonplod						May 27
nnnn 27/05/2019     C2 K  Worachate Boonplod						May 27
nnnn 28/05/2019     C2 K  Masanori Uchina						May 28
nnnn 29/05/2019     C2 K  Worachate Boonplod						May 29
nnnn 29/05/2019     C2 K  Masanori Uchina						May 29
nnnn 30/05/2019     C2 K  Masanori Uchina						May 30
nnnn 30/05/2019     C2 K  Trygve Prestgard						May 30
nnnn 30/05/2019     C2 K  Worachate Boonplod						May 30
nnnn 31/05/2019     C2 K  Worachate Boonplod						May 31
nnnn 31/05/2019     C3 K  Worachate Boonplod						May 31
nnnn 02/06/2019     C2 K  Masanori Uchina						June 2
nnnn 02/06/2019     C2 K  Worachate Boonplod						June 2
The column headed Des is the half month or other designation of the comet. The column headed C gives the SOHO instrument (C2 or C3 for the LASCO coronagraphs, SW for SWAN, T1 or T2 for STEREO) that the comet was discovered in. The column headed G indicates if it is a provisional member of the Kreutz group (K), Meyer group (Y), Marsden group (D), Kracht (R) or other comet (O). P in the SOHO number column indicates the discovery is pending, C indicates that it is confirmed, but not yet numbered, U indicates that is was not confirmed, X that it was confirmed, but there were insufficient observations.

Note that my observer count also includes X/ comets which are not counted as confirmed comets by the SOHO team. Where two or more people report discoveries nearly simultaneously, up to the first three observers are credited here. Where discoverers are clearly not following the SOHO or BAA Comet Section guidelines, they are not credited here at all. If initial reports don't include sufficient positions others may also be credited.

Official milestones:

It is possible that there are further comets to be found in the archival data, most likely non-group comets, but there may still be some Kreutz comets.


Published by Jonathan Shanklin. Jon Shanklin - jds@ast.cam.ac.uk