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
4256 26/01/2018 C3 K Worachate Boonplod January 26
C 24/01/2018 H1 O Alan Watson January 27 = (925) Alphonsina
101 26/01/2018 H1 K Zhijian Xu January 29
102 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
103 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
104 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
3512 03/04/2018 C2 K Masanori Uchina April 3
3513 09/04/2018 C3 K Worachate Boonplod April 9
3514 15/04/2018 C3 K Worachate Boonplod April 15
3515 18/04/2018 C2 K Worachate Boonplod April 18
3516 21/04/2018 C2 K Worachate Boonplod April 21
3517 22/04/2018 C3 K Worachate Boonplod April 22
3518 22/04/2018 C2 K Worachate Boonplod April 22
3519 23/04/2018 C2 K Worachate Boonplod April 23
3520 23/04/2018 C3 K Worachate Boonplod April 23
3521 27/04/2018 C2 K Worachate Boonplod April 27
3522 30/04/2018 C2 K Worachate Boonplod April 30
3523 02/05/2018 C2 K Worachate Boonplod May 2
4257 02/05/2018 C2 K Worachate Boonplod May 2
3524 03/05/2018 C2 D Rainer Kracht May 3
3525 04/05/2018 C2 K Worachate Boonplod May 4
3526 06/05/2018 C2 K Worachate Boonplod May 6
3527 06/05/2018 C3 K Worachate Boonplod May 6
3528 07/05/2018 C2 K Worachate Boonplod May 7
3529 07/05/2018 C3 K Worachate Boonplod May 7
3530 08/05/2018 C2 K Szymon Liwo May 8
3531 10/05/2018 C3 K Worachate Boonplod May 10
3532 10/05/2018 C3 K Worachate Boonplod May 10
4260 10/05/2018 C3 K Worachate Boonplod May 10
3533 11/05/2018 C2 K Worachate Boonplod May 11
3534 09/05/2018 C2 O Rainer Kracht May 11
3535 14/05/2018 C2 K Rainer Kracht May 16
3536 17/05/2018 C2 K Worachate Boonplod May 17
3537 19/05/2018 C3 K Worachate Boonplod May 19
3538 21/05/2018 C3 K Worachate Boonplod May 21
3539 21/05/2018 C2 O Rainer Kracht May 21
3540 23/05/2018 C2 K Worachate Boonplod May 24
3541 27/05/2018 C2 K Masanori Uchina May 27
3542 29/05/2018 C2 Y Worachate Boonplod May 29
3543 29/05/2018 C2 K Worachate Boonplod May 29
3544 29/05/2018 C2 K Worachate Boonplod May 29
3545 03/06/2018 C2 K Worachate Boonplod June 3
3546 07/06/2018 C3 K Masanori Uchina June 7
3547 08/06/2018 C2 K Worachate Boonplod June 8
3548 08/06/2018 C2 K Masanori Uchina June 8
3549 09/06/2018 C2 K Masanori Uchina June 9
3550 09/06/2018 C2 K Masanori Uchina June 9
3551 11/06/2018 C2 K Worachate Boonplod June 11
3552 12/06/2018 C2 K Worachate Boonplod June 12
3553 13/06/2018 C2 K Worachate Boonplod June 13
3554 14/06/2018 C2 K Worachate Boonplod June 14
3555 15/06/2018 C2 K Masanori Uchina June 15
3556 16/06/2018 C2 K Masanori Uchina June 16
3557 18/06/2018 C2 K Masanori Uchina June 18
3558 20/06/2018 C2 K Masanori Uchina June 20
3559 21/06/2018 C2 K Masanori Uchina June 21
3560 23/06/2018 C2 K Masanori Uchina June 23
3560 23/06/2018 C3 K Worachate Boonplod June 23
3561 24/06/2018 C2 D Rainer Kracht June 24
3562 24/06/2018 C3 K Masanori Uchina June 24
U 25/06/2018 C3 K Masanori Uchina June 25
3563 26/06/2018 C3 K Masanori Uchina June 26
3564 27/06/2018 C3 K Worachate Boonplod June 27
3565 27/06/2018 C2 K Masanori Uchina June 27
3566 27/06/2018 C2 K Masanori Uchina June 27
3567 30/06/2018 C3 K Worachate Boonplod June 30
3568 01/07/2018 C2 K Worachate Boonplod July 1
3569 02/07/2018 C3 K Worachate Boonplod July 2
3570 05/07/2018 C3 K Worachate Boonplod July 5
3571 06/07/2018 C3 K Worachate Boonplod July 6
3572 07/07/2018 C2 K Masanori Uchina July 7
3573 09/07/2018 C3 K Worachate Boonplod July 9
3574 13/07/2018 C3 K Masanori Uchina July 13
3575 15/07/2018 C3 K Masanori Uchina July 15
3576 18/07/2018 C3 K Worachate Boonplod July 18
3577 22/07/2018 C2 Y Rainer Kracht July 22
3578 23/07/2018 C2 Y Masanori Uchina July 23
3579 24/07/2018 C3 K Zhijian Xu July 24
3580 30/07/2018 C3 K Worachate Boonplod July 30
3581 31/07/2018 C3 K Worachate Boonplod July 31
3582 01/08/2018 C3 K Worachate Boonplod August 1
3583 11/08/2018 C2 D Rainer Kracht August 11 == 2002 R4 == 2007 Y4
C 11/08/2018 C2 D Worachate Boonplod August 11 == 2002 R4 == 2007 Y4
C 12/04/2013 C2 D Worachate Boonplod August ?? == 2002 R4 == 2007 Y4 == 3139 ?
3584 12/08/2018 C2 Y Masanori Uchina August 12
3585 13/08/2018 C3 K Worachate Boonplod August 13
3586 19/08/2018 C3 K Worachate Boonplod August 19
3587 24/08/2018 C3 K Masanori Uchina August 24
3588 28/08/2018 C3 K Zhijian Xu August 28
3589 29/08/2018 C3 K Worachate Boonplod August 29
3590 29/08/2018 C3 K Worachate Boonplod August 29
3591 29/08/2018 C3 K Worachate Boonplod August 29
3592 21/02/2014 H1 K Trygve Prestgard 2014 June 20
3593 01/09/2018 C3 K Worachate Boonplod September 1
3594 02/09/2018 C3 K Worachate Boonplod September 2
3595 03/09/2018 C3 K Worachate Boonplod September 3
3596 05/09/2018 C3 K Zhijian Xu September 5
3597 08/09/2018 C3 K Masanori Uchina September 8
3598 12/09/2018 C3 K Zhijian Xu September 12
3599 15/09/2018 C3 K Worachate Boonplod September 15
3600 16/09/2018 C3 K Worachate Boonplod September 16
3601 19/09/2018 C3 K Zhijian Xu September 19
3602 21/09/2018 C3 K Worachate Boonplod September 21
3603 21/09/2018 C3 K Worachate Boonplod September 21
3604 22/09/2018 C2 O Worachate Boonplod September 22
3605 22/09/2018 C3 K Worachate Boonplod September 22
3606 24/09/2018 C2 Y Worachate Boonplod September 24
3607 24/09/2018 C3 K Worachate Boonplod September 25
3608 26/09/2018 C3 K Worachate Boonplod September 26
3609 29/09/2018 C2 Y Worachate Boonplod September 29
3610 29/09/2018 C3 K Worachate Boonplod September 29
3611 30/09/2018 C3 K Worachate Boonplod September 30
3612 02/10/2018 C3 K Worachate Boonplod October 2
3613 03/10/2018 C2 K Worachate Boonplod October 3
3614 04/10/2018 C3 K Worachate Boonplod October 4
3615 05/10/2018 C3 K Worachate Boonplod October 5
3616 05/10/2018 C3 K Worachate Boonplod October 5
3617 07/10/2018 C3 K Worachate Boonplod October 7
3618 08/10/2018 C3 K Peiyuan Sun October 8
3619 08/10/2018 C3 K Worachate Boonplod October 8
3620 09/10/2018 C2 K Worachate Boonplod October 9
3621 12/10/2018 C2 K Worachate Boonplod October 12
3622 13/10/2018 C3 K Worachate Boonplod October 13
3623 16/10/2018 C3 K Worachate Boonplod October 16
3624 17/10/2018 C2 K Masanori Uchina October 17
3625 19/10/2018 C3 K Worachate Boonplod, Masanori Uchina October 19
3626 21/10/2018 C3 K Worachate Boonplod October 21
3627 22/10/2018 C2 K Worachate Boonplod October 22
3628 24/10/2018 C3 K Worachate Boonplod October 24
3629 24/10/2018 C3 K Worachate Boonplod October 24
3630 25/10/2018 C2 K Worachate Boonplod October 25
3631 27/10/2018 C3 K Worachate Boonplod October 27
3632 28/10/2018 C2 K Zheng Cao October 28
U 29/10/2018 C2 K Zheng Cao October 29
3633 30/10/2018 C2 K Worachate Boonplod October 30
3634 30/10/2018 C2 K Worachate Boonplod October 30
3635 30/10/2018 C3 K Worachate Boonplod October 30
3636 01/11/2018 C3 K Worachate Boonplod November 1
3637 04/11/2018 C3 K Worachate Boonplod November 4
3638 05/11/2018 C2 D Worachate Boonplod November 5
3639 06/11/2018 C2 D Worachate Boonplod November 6
3640 06/11/2018 C2 K Worachate Boonplod November 6
3641 06/11/2018 C2 K Masanori Uchina November 6
3642 08/11/2018 C3 K Worachate Boonplod November 8
3643 09/11/2018 C3 K Worachate Boonplod November 9
3644 10/11/2018 C2 K Masanori Uchina November 10
3645 11/11/2018 C3 K Worachate Boonplod November 11
3646 12/11/2018 C2 K Masanori Uchina November 12
3647 13/11/2018 C2 K Masanori Uchina November 13
3648 17/11/2018 C2 K Masanori Uchina November 17
3649 18/11/2018 C3 K Worachate Boonplod November 18
3650 18/11/2018 C3 K Worachate Boonplod November 18
3651 18/11/2018 C3 O Worachate Boonplod November 18
3652 19/11/2018 C3 K Worachate Boonplod November 19
3653 20/11/2018 C2 K Masanori Uchina November 20
3654 22/11/2018 C2 K Hanjie Tan November 22
3655 22/11/2018 C3 K Hanjie Tan November 22
3656 22/11/2018 C2 K Hanjie Tan November 22
3657 24/11/2018 C2 K Hanjie Tan November 24
3658 24/11/2018 C2 K Hanjie Tan November 24
105 22/11/2018 H1 K Trygve Prestgard November 24
3659 26/11/2018 C2 K Hanjie Tan November 26
26/11/2018 C2 O Rainer Kracht November 26 = Mercury
3660 27/11/2018 C2 K Worachate Boonplod November 27
3661 29/11/2018 C2 K Hanjie Tan November 29
3662 01/12/2018 C2 K Worachate Boonplod, Hanjie Tan December 1
3663 01/12/2018 C2 K Hanjie Tan December 1
3664 04/12/2018 C2 D Worachate Boonplod December 4
3665 05/12/2018 C2 K Hanjie Tan December 5
3666 06/12/2018 C3 K Worachate Boonplod December 6
06/12/2018 C2 K Rainer Kracht December 6 = 3666
3667 07/12/2018 C2 O Rainer Kracht December 7
3668 09/12/2018 C2 K Hanjie Tan December 9
3669 09/12/2018 C3 K Worachate Boonplod December 9
3670 10/12/2018 C3 K Worachate Boonplod December 10
3671 12/12/2018 C3 K Worachate Boonplod December 12
3672 12/12/2018 C2 K Worachate Boonplod December 12
3673 13/12/2018 C3 K Masanori Uchina December 13
3674 14/12/2018 C2 K Worachate Boonplod December 14
3675 19/12/2018 C3 K Worachate Boonplod December 19
3676 22/12/2018 C2 K Worachate Boonplod December 22
3677 24/12/2018 C2 K Masanori Uchina December 24
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
3600 Worachate Boonplod
Karl Battams provides this information: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
It is possible that there are further comets to be found in the archival data, most likely non-Kreutz group comets, but there may still be some Kreutz comets.