Dear All,

Finally I can post some more confirmations! We will begin with SOHO:

Soho#  Date/Time of Post  Discoverer     Tel     Group   Images of...
===================================================================== 
5186  Mar25,25 17:46:33   E.Banach      C3,C2    Kreutz  Mar25,25
5187  Mar26,25 20:42:50   W.Boonplod    C3,C2    Kreutz  Mar26-28,25
5188  Mar27,25 23:21:02   W.Boonplod    C3,C2    Kreutz  Mar26-27,25
5189  Apr01,25 19:41:27   J.Ruan          C2     Kreutz  Mar31,25

And now CCOR-1 (the complete set so far):

CCR1#  Date/Time of Post  Discoverer     Tel     Group   Images of... Chat#
===================================================================== 
0001  Feb10,25 08:32pm    R.Pickard     G1,C3    Kreutz  Feb11,25     5946
0002  Feb11,25 12:26am    R.Pickard       G1     Kreutz  Feb11,25     5949
0003  Feb11,25 03:54am    R.Pickard       G1     Kreutz  Feb11,25     5950
0004  Feb16,25 08:20am    J.Ruan          G1     Kreutz  Feb16,25     5981
0005  Feb19,25 10:41am    J.Ruan          G1     Kreutz  Feb19,25     5987
0006  Feb22,25 04:30pm    R.Pickard     G1,C3    Kreutz  Feb22-23,25  5989
0007  Feb24,25 03:51am    R.Pickard     G1,C3    Kreutz  Feb24,25     5999
0008  Feb24,25 07:26pm    R.Pickard       G1     Kreutz  Feb24-25,25  6005
0009  Feb24,25 10:37pm    R.Pickard       G1     Kreutz  Feb25,25     6006
0010  Feb28,25 10:46am    Z.Xu            G1     Kreutz  Feb06,25     6037
0011  Mar07,25 09:42:15   J.Ruan          G1     Kreutz  Feb27,25
0012  Mar03,25 06:52pm    R.Pickard       G1     Kreutz  Mar03,25     6042
0013  Mar04,25 11:02pm    Ruan,Pickard    G1     Kreutz  Mar05,25     6043
0014  Mar06,25 07:09am    J.Ruan          G1     Kreutz  Mar06,25     6050
0015  Mar06,25 06:16pm    J.Ruan          G1     Kreutz  Mar06-07,25  6057
0016  Mar07,25 18:26:03   J.Ruan          G1     Kreutz  Mar07-08,25  
0017  Mar12,25 05:53:44   J.Ruan          G1     Kreutz  Mar12,25
0018  Mar12,25 13:15:48   Z.Yang          G1     Kreutz  Mar12,25
0019  Mar13,25 10:48:51   J.Ruan          G1     Kreutz  Mar13,25
0020  Mar13,25 17:42:50   J.Ruan          G1     Kreutz  Mar13,25
0021  Mar15,25 19:37:39   J.Ruan        G1,C2    Kreutz  Mar15-16,25
0022  Mar17,25 05:23:00   J.Ruan          G1     Kreutz  Mar17,25
0023  Mar17,25 06:21:31   J.Ruan          G1     Kreutz  Mar17,25
0024  Mar17,25 07:43:34   J.Ruan          G1     Kreutz  Mar17,25
0025  Mar17,25 08:08:39   J.Ruan          G1     Kreutz  Mar17,25
0026  Mar19,25 14:04:45   J.Ruan          G1     Kreutz  Mar19,25 
0027  Mar20,25 08:54:09   J.Ruan          G1     Kreutz  Mar20,25 

Lots of things to talk about...

Some terminology points. I am naming the new CCOR-1 comets as "CCR1xxxx" (versus, say, "CCORxxxx"). The reason for this is that CCOR-2 should be launching on SWFO-L1 in September, and that instrument will probably discover as many comets as CCOR-1. So we will need to distinguish CCOR-1 from CCOR-2 from LASCO from...

There are two CCOR-1 reports from Jiangao on February 8 - here and here. I cannot see any comet in this data other than CCOR-0004, which was already confirmed. It's very possible/likely that I am confused by the coordinate system, so updates on this would be appreciated. For now, I am not including them.

I was asked again to reconsider this report from Jiangao of a C2 Kreutz in 2022. I looked at the data using four different data processing techniques, and spent a long time trying to see something there. I simply cannot see anything that looks like a comet in those data, so unfortunately I am still unable to confirm it.

Also, I keep meaning to note that Simone Renai sent me an email a few months ago pointing out that SOHO-4866 (Archive Kreutz) was a repeat of SOHO-4330. So I am going to keep the "4330" slot vacant until an appropriate archive comet comes along (which I'm sure it will).

I am sure that you have all noticed that I am a few months behind in confirmations. There are several reasons. First, I have just been very busy on many other tasks. Second, I had to update my software to work with CCOR images. We still do not have good pointing/distortion corrections for this data, so I am currently unable to record the astrometry -- I can only mark down the x,y positions, and I will need to convert that to RA/DEC later (not too difficult). Third, trying to convert the reported x,y positions for CCOR into x,y positions that match mine was also very tricky. I don't see an easy solution for that any time soon, and it will always just add time. Fourth, there are clearly a LOT of comets being found in CCOR-1. It would seem that the Kreutz we would normally only see during the "LASCO C2 seasons" are clearly visible in CCOR-1. So this means that months such as March that would normally be quiet (four SOHO discoveries), are now as busy as any other time of the year (16 CCOR-1 discoveries!). Finally, it is complicated looking for CCOR discoveries in LASCO images, and I am still incomplete on that task.

The bottom line is that the additional CCOR-1 influx of data and comets is proving to be an exceptional challenge for me, and what used to take me maybe 5-10 minutes per comet now can take up to 30 minutes per comet, sometimes more. That adds up to a lot of hours that I don't have available. At some point I will need to come up with a plan that includes all of you in the process of measuring comets -- probably by way of supplying you with software tools that you can use to look for, measure, and report, in a uniform format. But right now you all are using a different CCOR FITS data product than I am (we have our own, which eventually I hope we will share, but that's not up to me). So all I can do is ask for your patience and understanding as I try to adapt to all this...

One final notice -- because I clearly am not busy enough already -- is that literally five minutes ago we released the WISPR Encounter 22 and 23 data. So that will likely mean a few more comet discoveries. Speaking of which, I have a report from Matthew Knight of this obvious comet in WISPR-I from 2020:

# HEIGHT    DATE   TIME    ANGLE TEL  FC   COL     ROW
 53.79 2020-06-27 01:16:48 286.3 1    10   148.15  685.98
 53.93 2020-06-27 02:01:48 286.3 1    10   149.30  685.89
 54.08 2020-06-27 02:46:48 286.4 1    10   150.19  686.77
 54.21 2020-06-27 03:31:48 286.4 1    10   151.07  687.13
 54.36 2020-06-27 04:16:48 286.4 1    10   152.04  687.92
 54.49 2020-06-27 05:01:48 286.4 1    10   153.02  687.92
 54.67 2020-06-27 05:46:48 286.5 1    10   154.17  689.07
 54.82 2020-06-27 06:31:48 286.5 1    10   155.14  689.87
 55.00 2020-06-27 07:16:48 286.6 1    10   156.38  690.75

Neither he or I can figure out what object it is, but I am not convinced it is new. So if any of you happen to have been keeping track, and/or know what that comet is, please let me know! Otherwise, it will be a new discovery (which I hope is the case, because Matthew has worked with Sungrazers his entire career yet never had time/opportunity to discover one!) You can find that FITS data here.

I'm sure there is something else important I am forgetting, but this is enough for today. As always, please email me with any questions, comments, complaints, or concerns.

Karl