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Details:
Time: 22:01UT 2021-04-03 Exp.9 x 182sec
Tel: C14 @ f/7.88 AP7 CCD 1.77"/pix Paramount GT-1100S
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.
AT2021hpr (= ATLAS21jme), TNS discovered 2021/04/02.449 by Koichi Itagaki
Found in NGC 3147 at R.A. = 10h16m38s.656, Decl. = +73°24'01".72
Located 64".2 west and 1".0 south of the center of NGC 3147 Mag 17.7:4/2,
Type SN Ia (zhost=0.009346) (References: SN 2021do, 2008fv, 2006gi, 1997bq, 1972H)
Reference: David Bishop http://www.rochesterastronomy.org/snimages/
Discovery page (References: TNS):
https://wis-tns.weizmann.ac.il/object/2021hpr
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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