September 2023 and PSP confirmations
These are confirmations for September 2023, plus a couple of other reports that I had missed.
Soho# Date/Time of Post Discoverer Tel Group Images of... ===================================================================== 4869 Sep04,23 19:52:28 Z.Yang C3 Kreutz Sep04-05,23 4870 Sep06,23 12:32:19 R.Pickard C3,C2 Kreutz Sep06-07,23 4871 Sep11,23 23:47:24 J.Ruan C2 NonGrp Sep11-12,23 4872 Sep12,23 22:40:45 W.Boonplod C3 Kreutz Sep12-13,23 XC99 Sep14,23 12:30:57 R.Pickard C3 NonGrp Sep14,23 4873 Sep17,23 14:38:40 R.Pickard C3 Kreutz Sep17,23 4874 Sep19,23 12:17:47 R.Pickard C3 Kreutz Sep19,23 4875 Sep23,23 11:29:54 Z.Yang C3,C2 Kreutz Sep23,23 4876 Sep26,23 04:47:48 J.Ruan C3,C2 Kreutz Sep26,23 4877 Sep26,23 23:22:13 J.Ruan C3,C2 Kreutz Sep27,23 4878 Sep27,23 04:49:30 J.Ruan C3 Kreutz Sep27,23 4879 Jul10,23 08:29:11 J.Ruan,W.Zhou C2 Kreutz Mar31,18 4880 Jul25,23 22:28:18 R.Pickard C3 Kreutz Jul25-26,23 4881 Jul25,23 22:31:16 R.Pickard C3 Kreutz Jul25-26,23 4882* Sep30,23 01:35am W.Boonplod C2 Meyer Sep30,23 4883* Sep30,23 11:43am J.Ruan C3,C2 Kreutz Sep30,23 4884* Sep30,23 05:50pm S.Liwo C2 Kreutz Sep30,23 4885 May28,23 01:37:27 J.Ruan,W.Zhou C2 Kreutz Dec01,05 --
I could not confirm report_rp_20230911221811 (R.Pickard). Also, I have made Robert's Sep14 report an x-comet. There were not enough good observation that I could confirm it at all, but the few observations we had were enough to make me not want to throw away that data. That's exactly what x-comets are there for! I was able to confirm his report from report_rp_20230919121747 though, which had not been 'endorsed' by anyone (no surprise -- it was extremely faint).
EDIT/CORRECTION: I realized I forgot about three reports made to the groups.io page, so those are now added as SOHO-4882 (Msg #5752), SOHO-4883 (Msg #5754), and SOHO-4884 (Msg #5757). Also, Wenjie pointed out an archive report I missed, so that is added too. Apologies for missing these, and thanks to everyone that contacted me!
Now, as for Parker Solar Probe (PSP) comets, here is the complete updated list of confirmations:
PSP# Report Date/Time Discoverer(s) Tel Group Images of... ========================================================================== 0001 Sep25,22 02:32am P.Berrett WISPR-I Kreutz May29,22 0002 N/A K.Battams WISPR-I Kreutz Sep01-02,22 0003 N/A K.Battams WISPR-I Kreutz Sep02,22 0004 N/A K.Battams WISPR-I Kreutz Sep01,22 0005 Feb11,23 11:25pm P.Berrett WISPR-I Kreutz Nov18,21 0006 May13,23 04:54am P.Berrett WISPR-I/O NonGrp Dec11,22 0007 Jul12,23 10:03am K.Battams WISPR-I Kreutz Mar12,23 0008 Jul16,23 04:41pm R.Biros WISPR-I/C3/H1A NonGrp Dec06-07,22 0009 Jul28,23 04:40pm R.Biros WISPR-I Kreutz Apr25,21 0010 Jul28,23 04:40pm R.Biros WISPR-I Kreutz Apr25,21 0011 Jul24,23 08:09am R.Biros WISPR-I Kreutz Nov17,21 0012 Jul30,23 05:10pm R.Biros WISPR-I Kreutz Feb21,22 0013 Jul27,22 02:30am P.Berrett WISPR-I Kreutz Feb15,22 0014 Aug03,23 12:11pm R.Biros WISPR-I Kreutz Aug04,21 0015 Aug03,23 12:11pm R.Biros WISPR-I Kreutz Aug05-06,21 0016 Aug04,23 04:13am R.Biros WISPR-I Kreutz May29,22 0017 Aug16,23 01:02pm R.Pickard WISPR-I Kreutz Jan12,21 0018 Oct13,23 09:57am P.Berrett WISPR-I Kreutz Jun19,23 0019 Nov02,23 09:36am G.Stenborg WISPR-I NonGrp Sep27,23 0020 Aug08,23 09:15am P.Berrett WISPR-I Kreutz Jan13,21
(EDIT/CORRECTION: I forgot Peter's email from Aug 08 2023, so that is added as PSP-20.)
I looked through all the reports including Robert's text file, and the report that Rafal made in that conversation thread. For the recent E15 data, there were four obvious comets seen in the images. The first two (bright) were clearly SOHO-4749 and 4750. Then there was a fainter one that Peter reported first via email, and Jiangao an hour later on the chat group. And lastly there was the comet lower down in the field of view which appears to be SOHO-4752. I could not confirm Robert's report of a comet on 6/17, or Zesheng's report of a fragment on 6/19.
You will notice the last comet on the list is a non-group object reported to me by one of the PSP/WISPR science team members -- Dr. Guillermo Stenborg. This is, of course, data that is not yet public. As I am sure you realize, we (the science team) do not have time to search through the data for comets, and are instead very happy to leave that to you all. But we do have to study the data, and sometimes we will see features that we have to discuss. In this case, Guillermo was performing his usual analysis in preparation to calibrate the new data when he saw an object moving opposite to the stars. He sent it to me assuming it was a known comet or asteroid, but it turns out to be a new non-group comet. We will release a short movie of it sometime soon. It is his first comet discovery, so many congratulations to Guillermo!
But I do also want to reassure you all that we are NOT trying to discover comets ourselves, but sometimes these things "jump out" at us when we are studying the data. (That's how I have found a number of comets -- simply because I have to spend so much time looking at the images.) I think this data will probably be released some time in January, but I will warn everyone closer to the time.
As always, please email me with any questions, comments, corrections, etc.
Karl