SOHO Comets 2018

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
3485 02/01/2018     C3 K  Worachate Boonplod						January 2
3486 03/01/2018     C3 K  Zhijian Xu							January 3
3487 05/01/2018     C3 K  Worachate Boonplod						January 5
  91 06/01/2018     H1 K  Karl Battams							January 9
  92 09/01/2018     H1 K  Zhijian Xu							January 12
  93 13/01/2018     H1 K  Trygve Prestgard						January 15
  94 14/01/2018     H1 K  Zhijian Xu							January 16
  95 14/01/2018     H1 K  Trygve Prestgard						January 17
  96 16/01/2018     H1 K  Trygve Prestgard						January 18
   U 14/01/2018     H1 K  Trygve Prestgard						January 18
  97 17/01/2018     H1 K  Zhijian Xu							January 20
  98 19/01/2018     H1 K  Zhijian Xu							January 21
  99 21/01/2018     H1 K  Zhijian Xu							January 23
 100 23/01/2018     H1 K  Masanori Uchina						January 25
   U 23/01/2018     H1 K  Zhijian Xu							January 25
3488 26/01/2018     C3 K  Worachate Boonplod						January 26
 101 24/01/2018     H1 O  Alan Watson							January 27
 102 26/01/2018     H1 K  Zhijian Xu							January 29
 103 30/01/2018     H1 K  Zhijian Xu							February 2
3489 05/02/2018     C3 K  Zhijian Xu							February 5
3490 05/02/2018     C3 K  Worachate Boonplod						February 5
3491 05/02/2018     C2 D  Worachate Boonplod						February 5
 104 03/01/2018     H1 K  Zhijian Xu							February 6
3492 07/02/2018     C3 K  Zhijian Xu							February 7
3493 11/02/2018     C2 Y  Worachate Boonplod						February 11
 105 09/02/2018     H1 K  Masanori Uchina						February 11
3494 14/02/2018     C3 K  Worachate Boonplod						February 14
3495 15/02/2018     C3 K  Worachate Boonplod						February 15
3496 17/02/2018     C3 K  Worachate Boonplod						February 17
3497 19/02/2018     C3 K  Worachate Boonplod						February 19
3498 22/02/2018     C3 K  Zhijian Xu							February 22
3499 24/02/2018     C2 Y  Worachate Boonplod						February 24
3500 25/02/2018     C3 K  Szymon Liwo							February 25
3501 02/03/2018     C3 K  Salil Mulye, Worachate Boonplod 				March 2
3502 04/03/2018     C2 Y  Worachate Boonplod						March 4
3503 09/03/2018     C3 K  Worachate Boonplod						March 9
3504 12/03/2018     C2 Y  Szymon Liwo							March 12
3505 13/03/2018     C3 K  Worachate Boonplod						March 13
3506 14/03/2018     C3 K  Worachate Boonplod						March 14
3507 14/03/2018     C3 K  Worachate Boonplod						March 14
3508 17/03/2018     C3 Y  Worachate Boonplod						March 17
3509 20/03/2018     C3 K  Zhijian Xu							March 20
3510 30/03/2018     C3 K  Worachate Boonplod						March 30
3511 31/03/2018     C2 K  Worachate Boonplod						March 31
nnnn 03/04/2018     C2 K  Masanori Uchina						April 3
nnnn 09/04/2018     C3 K  Worachate Boonplod						April 9
nnnn 15/04/2018     C3 K  Worachate Boonplod						April 15
nnnn 18/04/2018     C2 K  Worachate Boonplod						April 18
nnnn 21/04/2018     C2 K  Worachate Boonplod						April 21
nnnn 22/04/2018     C3 K  Worachate Boonplod						April 22
nnnn 22/04/2018     C2 K  Worachate Boonplod						April 22
nnnn 23/04/2018     C2 K  Worachate Boonplod						April 23
nnnn 23/04/2018     C3 K  Worachate Boonplod						April 23
nnnn 27/04/2018     C2 K  Worachate Boonplod						April 27
nnnn 30/04/2018     C2 K  Worachate Boonplod						April 30
nnnn 03/05/2018     C2 D  Rainer Kracht							May 3
nnnn 04/05/2018     C2 K  Worachate Boonplod						May 4
nnnn 06/05/2018     C3 K  Worachate Boonplod						May 6
nnnn 07/05/2018     C2 K  Worachate Boonplod						May 7
nnnn 07/05/2018     C3 K  Worachate Boonplod						May 7
nnnn 08/05/2018     C2 K  Szymon Liwo							May 8
nnnn 10/05/2018     C3 K  Worachate Boonplod						May 10
nnnn 10/05/2018     C3 K  Worachate Boonplod						May 10
nnnn 11/05/2018     C2 K  Worachate Boonplod						May 11
nnnn 09/05/2018     C2 O  Rainer Kracht							May 11
nnnn 14/05/2018     C2 K  Rainer Kracht							May 16
nnnn 17/05/2018     C2 K  Worachate Boonplod						May 17
nnnn 19/05/2018     C3 K  Worachate Boonplod						May 19
nnnn 21/05/2018     C3 K  Worachate Boonplod						May 21
nnnn 21/05/2018     C2 O  Rainer Kracht							May 21
nnnn 23/05/2018     C2 K  Worachate Boonplod						May 24
nnnn 27/05/2018     C2 K  Masanori Uchina						May 27
nnnn 29/05/2018     C2 Y  Worachate Boonplod						May 29
nnnn 29/05/2018     C2 K  Worachate Boonplod						May 29
nnnn 03/06/2018     C2 K  Worachate Boonplod						June 3
nnnn 08/06/2018     C2 K  Worachate Boonplod						June 8
nnnn 08/06/2018     C2 K  Masanori Uchina						June 8
nnnn 09/06/2018     C2 K  Masanori Uchina						June 9
nnnn 09/06/2018     C2 K  Masanori Uchina						June 9
nnnn 11/06/2018     C2 K  Worachate Boonplod						June 11
nnnn 12/06/2018     C2 K  Worachate Boonplod						June 12
nnnn 13/06/2018     C2 K  Worachate Boonplod						June 13
nnnn 14/06/2018     C2 K  Worachate Boonplod						June 14
nnnn 15/06/2018     C2 K  Masanori Uchina						June 15
nnnn 16/06/2018     C2 K  Masanori Uchina						June 16
nnnn 18/06/2018     C2 K  Masanori Uchina						June 18
nnnn 20/06/2018     C2 K  Masanori Uchina						June 20
nnnn 21/06/2018     C2 K  Masanori Uchina						June 21
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:
3500    Szymon Liwo
S100    Masanori Uchina

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