SOHO Comets 2020

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
     04/01/2020     C2 O  Peter Berrett							January 4
3890 13/01/2020     C3 K  Worachate Boonplod						January 13
     20/06/2013     C2 Y  Peter Berrett							January 18
     10/12/2013     C2 Y  Peter Berrett							January 18
     06/06/2014     C2 R  Peter Berrett							January 19
3891 19/01/2020     C3 K  Masanori Uchina						January 20
3892 20/01/2020     C3 K  Worachate Boonplod						January 20
3893 23/01/2020     C2 O  Worachate Boonplod						January 23
3894 29/01/2020     C3 K  Worachate Boonplod						January 29
39xx 31/01/2018     C2 Y  Peter Berrett							January 29
3895 31/01/2020     C2 Y  Masanori Uchina						January 31
     19/02/2016     C2 O  Peter Berrett							January 31
3896 01/02/2020     C3 K  Worachate Boonplod						February 1
     14/06/2012     C2 O  Peter Berrett							February 3
3897 05/02/2020     C3 K  Worachate Boonplod						February 5
     25/01/2011     C2 Y  Peter Berrett							February 5
3898 08/02/2020     C3 K  Masanori Uchina						February 8
3899 09/02/2020     C3 K  Worachate Boonplod						February 9
3900 09/02/2020     C3 K  Worachate Boonplod						February 9
3901 10/02/2020     C3 K  Worachate Boonplod						February 10
     31/07/2008     C2 Y  Peter Berrett							February 11
3902 13/02/2020     C3 K  Worachate Boonplod						February 13
3903 20/02/2020     C3 K  Worachate Boonplod						February 20
3904 22/02/2020     C3 K  Worachate Boonplod						February 22
3905 25/02/2020     C3 K  Worachate Boonplod						February 25
3906 29/02/2020     C3 K  Worachate Boonplod						March 1
     06/03/2020     C3 K  Worachate Boonplod						March 6
     08/03/2020     C2 Y  Worachate Boonplod						March 8
     08/03/2020     C2 Y  Worachate Boonplod						March 8
     10/03/2020     C3 K  Masanori Uchina						March 10
     10/03/2020     C3 K  Krzysztof Kida 						March 10
     12/03/2020     C3 K  Worachate Boonplod						March 12
     12/03/2020     C2 K  Masanori Uchina						March 12
     13/03/2020     C3 K  Worachate Boonplod						March 13
     14/03/2020     C3 K  Worachate Boonplod						March 15
     18/03/2020     C3 K  Michal Kusiak							March 18
     23/03/2020     C3 K  Worachate Boonplod						March 23
     23/03/2020     C2 K  Masanori Uchina						March 23
     26/03/2020     C2 K  Trygve Prestgard						March 26
     26/03/2020     C2 K  Worachate Boonplod						March 26
     27/03/2020     C2 Y  Worachate Boonplod						March 27
     01/04/2018     C2 K  Trygve Prestgard						March 30
     05/04/2018     C2 K  Trygve Prestgard						March 30
     18/04/2018     C2 K  Trygve Prestgard						March 30
     28/04/2018     C2 K  Trygve Prestgard						March 30
     04/04/2020     C3 K  Szymon Liwo							April 4
     06/04/2020     C2 K  Worachate Boonplod						April 6
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.  A surprisingly large number of non Kreutz comets have been found by Peter Berrett in what I had thought to be well viewed archive images.


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