Hello Christophe,
this is P/2022 L3 (ATLAS).
Magnitude fits nicely.
You may use
Regards
Maik
I was performing some photometry on a variable star (Hip10272, in Aries) in some TICA TESScuts, sector 58, when I came upon a quite nice comet slowly crossing the FOV, in a corner of the images.
I did a quick search using Patrick Chevalley's CdC, but could not find any valuable comet candidate to match this beauty.
This comet had a condensed head, about 60'', and maybe a 15' tail, all in all.
I did a photometry in a 1.5 pixel around the centroid of the coma, and get a mean value of 15.32 mag on 74 sub images, so in a 30'' circle, using AIJ. This coma magnitude is in pseudo V, or CV. The mag of the comps stars were in V, but I've some doubts about the original bandpass of the TESS data.
I managed to found a FOV where the comet is traveling dead in the center of the images, and releved an (approximative) astrometric position when the comet just crossed the right center of the FOV, unfortunatelly in front of a mag 13 star.
slice/date (BJD)/ RA/ DEC
7276 2459899.584 021203.4 +234004.3
The TICA sector 58 can be downloaded from here :
<>
If you enter the position 33.133098 23.671662, you'll download the same FOV than mine.
Here are a few images.
Any advice on how to find the name of this comet is welcome.
Thanx in advance.--
"One cannot discover comets lying in bed." * Lewis Swift
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