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Details:
Time: 20:53UT 2021-08-19 Exp.16 x 182sec
Telescope: 0.254m f/4.9 ST-10XME CCD 1.13"/pix
Odd Trondal Obs.code 238 (Uranium). Oslo Norway.
Atom weight Neptunium Isotope 238.Half-life 2 days
AT2021wel (= ZTF21abtzlnh) discovered 2021/08/17.182 at R.A. =
16h24m39s.700, Decl. = +41°01'10".57 Mag 18.0:8/17, Type unknown
(zhost=0.027285) (host KUG 1622+411B) (References: TNS, ZTF observations)
Reference David Bishop http://www.rochesterastronomy.org/snimages/
Discovery page (References: TNS):
https://www.wis-tns.org/object/2021wel
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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