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Details:
Time: 22:18UT 2021-05-20 Exp.30 x 1min
Tel: 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.
AT2021mnj (= ZTF21abbomrf) discovered 2021/05/15.239 at R.A. =
14h45m20s.593, Decl. = +38°44'18".53 Mag 18.8:5/15, Type SN II
(References: TNS, ZTF observations)
Reference: David Bishop http://www.rochesterastronomy.org/snimages/
Discovery page (References: TNS):
https://wis-tns.weizmann.ac.il/object/2021mnj
Reference image from Aladin or Sloan Digital Sky Survey
Software used:TheSky6,CCDSoft 5, MSB Astroart 2.0,7.0, P
Photographer's website:
https://www.flickr.com/photos/odd_trondal/
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