Confirmations for February 2023 and more
Here are SOHO comet confirmations for February 2023, a bunch more archive confirmations, and corrections to the last set of archive confirmaions...
Soho# Date/Time of Post Discoverer Tel Group Images of... ===================================================================== 4610 Sep02,22 10:45:44 Z.Yang C2 Kreutz May20,97 4611 Sep03,22 02:20:58 Z.Yang C2 Kreutz Jun08,97 4612 Sep04,22 09:52:04 Z.Yang C2 Kreutz Jun11-12,97 4613 Sep04,22 01:34:24 J.Ruan,W.Zhou C2 Kreutz Oct25,97 4614 Sep04,22 01:37:44 J.Ruan,W.Zhou C2 Kreutz Oct26,97 4615 Sep04,22 11:51:38 J.Ruan,W.Zhou C2 Kreutz Nov11,97 4616 Sep03,22 15:45:08 H.Tan C2 Kreutz Dec08,97 4617 Sep03,22 08:13:59 H.Tan C2 Kreutz Apr28,98 4618 Sep03,22 07:42:04 H.Tan C2 Kreutz Apr28,98 4619 Sep03,22 09:28:34 H.Tan C2 Kreutz May07,98 4620 Oct16,22 01:12:03 J.Ruan,W.Zhou C2 Kreutz May17,98 4621 Sep03,22 05:27:31 J.Ruan,W.Zhou C2 Kreutz Jun06-07,98 4622 Sep04,22 01:39:51 J.Ruan,W.Zhou C2 Kreutz Jun13,98 4623 Sep03,22 09:56:53 J.Ruan,W.Zhou C2 Kreutz Jun18,98 4624 Sep03,22 00:07:02 J.Ruan,W.Zhou C2 Kreutz Nov28,98 4625 Sep03,22 00:09:00 J.Ruan,W.Zhou C2 Kreutz Dec06,98 4626 Sep11,22 23:11:56 J.Ruan,W.Zhou C2 Kreutz Mar26,99 4627 Sep09,22 05:56:47 J.Ruan,W.Zhou C2 Kreutz Mar31,99 4628 Aug25,22 11:52:02 J.Ruan,W.Zhou C2 Kreutz Apr25.99 4629 Aug29,22 01:24:12 J.Ruan,W.Zhou C2 Kreutz May08,99 4630 Aug29,22 08:44:27 J.Ruan,W.Zhou C2 Kreutz May24,99 4631 Aug29,22 09:51:08 J.Ruan,W.Zhou C2 Kreutz May28,99 4632 Sep13,22 11:44:45 J.Ruan,W.Zhou C2 Kreutz Jul03,99 4633 Sep14,22 01:58:56 J.Ruan,W.Zhou C2 Kreutz Jul05,99 4634 Aug30,22 08:44:52 Z.Chen C2 NonGrp Aug01,99 4635 Aug30,22 12:10:11 J.Ruan,W.Zhou C2 Kreutz Oct07,99 4636 Aug31,22 01:55:51 J.Ruan,W.Zhou C2 Kreutz Oct14,99 4637 Aug31,22 04:27:34 J.Ruan,W.Zhou C2 Kreutz Oct22,99 4638 Aug31,22 12:43:10 J.Ruan,W.Zhou C2 Kreutz Oct25,99 4639 Aug31,22 12:46:10 J.Ruan,W.Zhou C2 Kreutz Oct29,99 4640 Sep02,22 16:14:45 H.Tan C2 Kreutz Dec14,99 4641 Mar25,23 02:50:05 H.Tan C2 NonGrp Nov05,98 4642 Feb06,23 12:08:09 Z.Yang C3 Kreutz Feb06-06,23 4643 Feb08,23 18:18:53 W.Boonplod C3 Kreutz Feb08,23 4644 Feb09,23 01:27:49 H.Tan C3,C2 NonGrp Feb08-09,23 4645 Feb15,23 11:38:48 W.Boonplod C3 Kreutz Feb15-16,23 4646 Feb21,23 01:58:38 H.Tan C3 Kreutz Feb21,23 4647 Feb21,23 11:03:30 Z.Yang C3 Kreutz Feb21,23 4648 Feb23,23 10:31:08 W.Boonplod C3 Kreutz Feb23,23 4649 C/2023 A2 (SWAN) V.Bezugly SWAN NonGrp Jan/Feb,23 4650 Jul03,22 09:48:32 J.Ruan C3 Kreutz Aug01,96 4651 Sep05,22 14:49:10 H.Tan C2 Kreutz Mar09,97
Several things to mention here but first: many thanks to both Zesheng Yang and Jonathan Shanklin for pointing out the previous date errors in 4611, 4612, 4613, 4621, and 4624!
Other things, in no particular order:
- I am still not including 96P fragments yet. These continue to be challenging. We are currently assessing other data sets, and looking to gather more data, that will help us determine the extent to which 96P has fragments versus a clumpy debris trail. The reality is likely a mix of both, and yes there are clearly at least a couple of obvious, distinct fragments, but there were several reported objects that are a little less unclear. It is also now apparent that some of the observed fragments are certainly returns of the known fragments, and I still need to sort out which is which. So these will get looked at soon, but I don't want to hold up the process any longer while I wait on that. So I skipped them and moved into February.
- As you see, there are more archive comets here. These take up a lot of time, which is why realtime confirmations are slower -- plus I am busy on other projects. We fixed the software bug that was affecting the two comets I now list as 4651 and 4652. And you will also see that Vladimir's SWAN comet is on the list as 4649. (I see that there may be a new SWAN comet now, too, so that will get its own number if declared official).
- I am disappointed in you all!!! OK, that is of course a joke, but I am very surprised about something. If you take a look at Figure 3 of Qicheng Zhang's new paper, you will see that Phaethon has been visible in the LASCO C2 images almost every year since 1997, and none of you saw it until 2022! You will probably find most of that paper quite interesting to read -- it's a really interested result with implications for many (most) of SOHO's comets.
- I apologize for the occasional website outages recently, some of which were unplanned. Unfortunately this weekend there is a planned outage that will take the website entirely offline until (probably) Sunday. This is completely out of our control but we are looking into measures to prevent future maintenance like this from taking the site offline.
As always, please email me with questions, corrections, etc. I will be out of office for much of next week, but will reply as soon as I return. You can always use the sungrazercomets[at]gmail address to reach out with any urgent issues (or also if ever a very bright comet of any kind shows up, please email me immediately as I don't always look at the website every day.)