Countdown to 5,000: SOHO-4980!
Hi All,
As I mentioned last time, I will do confirmations differently until we reach SOHO-5000. Here is the complete confirmations for January 2024, and through SOHO-4980
Soho# Date/Time of Post Discoverer Tel Group Images of... ===================================================================== 4968 Jan02,24 18:09:24 H.Tan C3,C2 Kreutz Jan02-04,24 4969 Jan02,24 19:20:24 H.Tan C2 Kreutz Jan02,24 4970 Jan06,24 19:22:10 J.Ruan C3 Kreutz Jan07,24 4971 Jan07,24 01:41:01 J.Ruan C3,C2 Kreutz Jan07-08,24 4972 Jan13,24 21:17:47 R.Pickard C3,C2 Kreutz Jan13-14,24 4973 Jan16,24 10:52:32 H.Tan C3 Kreutz Jan16-17,24 4974 Jan24,24 19:30:45 J.Ruan C3 Kreutz Jan24-25,24 4975 Jan25,24 17:02:36 H.Tan C3,C2 Kreutz Jan25-27,24 4976 Jan29,24 02:18:54 H.Tan C2 NonGrp Jan29,24 4977 Jan31,24 23:27:36 J.Ruan C3 Kreutz Feb01,24 4978 Feb01,24 12:48:34 HT,JR,MB,EB C3,C2A,C2 Kreutz Feb01-03,24 4979 Feb03,24 03:03:18 H.Tan C3,C2 Kreutz Feb03-04,24 4980 Feb03,24 20:15:14 W.Boonplod C3 Kreutz Feb04,24 --
HT,JR,MB,EB = Hanjie Tan, Jiangao Ruan, Michal Biesiada, Eryk Banach; "C2A" == STEREO/SECCHI COR2-A. And yes, I am aware there is one more 'endorsed' comet on the page from Feb 04 -- I will include that in the next set of confirmations.
It's very possible that SOHO-4979 will also be visible in COR2-A images -- we just don't have that data down yet. I should probably also point out that the Kreutz have been visible in HI-1A for a couple of weeks or more now. I haven't listed them here yet because I need to wait for some calibration files before I can properly record them. But most of these comets, and several from January, are visible in that data. I have not looked for new comets yet, so there might be some in there. Just for reference, there is usually about a 10 - 12hour delay between a comet leaving HI-1 and entering C2. Usually when they leave HI1, they are about mid-way through the C3 field of view (though this varies a lot based on the individual orbits, and the viewing geometry).
For those of you new to the project, "HI-1" is the Heliospheric Imager 1 camera on NASA STEREO-A. You can find links to those png images here. Note that they look very different to the LASCO images. You can see the different STEREO-A fields of view here. But note that the data from these telescopes usually takes about 48 - 72 hours to be transmitted back to Earth, so the realtime cameras from SOHO (i.e., LASCO C2 and C3) find most of the comets.
As always, please email me with questions, comments, complaints, concerns, etc.
Karl