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Details:
Time: 02:09UT 2021-01-26 Exp.17 x 122sec
Telescope 0.254m f/6.34 with ST-10XME CCD Binning 2x2 1.51"/pix
Odd Trondal Obs.code 238 (Uranium). Oslo Norway.
Plutonium Isotope.Atom-weight 238.Half-life 87.7 years gives power to the Voyagers, New Horizon and other distant spacecrafts.
AT2021biy (= ATLAS21dfy) discovered 2021/01/29.559 at R.A. =
12h42m04s.020, Decl. = +32°32'07".58 Mag 18.1:1/29, Type unknown (zhost=0.002021)
(host NGC 4631) (References: AstroNote 2021-33, TNS)
Reference: David Bishop http://www.rochesterastronomy.org/snimages/
Discovery page (References: TNS):
https://wis-tns.weizmann.ac.il/object/2021biy
Reference image from Aladin or Sloan Digital Sky Survey
Software used:TheSky6,CCDSoft 5, MSB Astroart 2.0,7.0, Paint
Photographer's website:
https://www.flickr.com/photos/odd_trondal/
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