Hi David,
Neat stuff.
Did you ever find an identification?
Did you try the MPC form here for known Minor Planet Identification?
https://cgi.minorplanetcenter.net/cgi-bin/checkmp.cgi
I did a quick check and inputting your date/time/RA/Dec on that page
provided this (column formatting lost in the copy so screenshot image
also below) :-
Quote:
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Originally Posted by MPC
The following objects, brighter than V = 30.0, were found in the 5.0-arcminute region around R.A. = 12 32 42.000, Decl. = +12 46 36.00 (J2000.0) on 2021 04 08.53 UT:
Object designation R.A. Decl. V Offsets Motion/hr Orbit Further observations?
h m s ° ' " R.A. Decl. Mot. PA Comment (Elong/Decl/V at date 1)
2017 HF65 12 32 55.4 +12 45 21 21.8 3.3E 1.3S 32.3 284.4 4o Very desirable between 2021 May 29-June 28. (110.4,+11.0,22.6)
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That is 209 arcseconds away from your coordinates but the MPC form
only permitted entry of the time to the nearest 0.01 fraction of a day -
14.4 minutes.
The form says 2017 HF65 is moving at 32.3 arcseconds/hour so it still doesn't quite fit with yours.
Are your estimated coordinates with respect J2000?
Good luck!