Probable Supernova in galaxy PGC 20197
Taken by Odd Trondal on December 20, 2025 @ Norway
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Time: 23:10UT 2025-12-20 Exp.45 x 65sec
Tel. 0.254m f/5.8 ST-10XME CCD @ -35°C 0.95"/pix
Odd Trondal Obs.code 238 (Uranium). Oslo Norway.

AT2025agkm (= ATLAS25pmu) discovered 2025/12/10.448 at R.A. = 07h07m26s.380, Decl. = +56°18'08".14 Mag 19.0:12/10, Type unknown (zhost=0.037683) (host CGCG 261-024) (References: TNS)

Reference David Bishop http://www.rochesterastronomy.org/snimages/

Discovery page (References: TNS):
https://www.wis-tns.org/object/2025agkm

Reference image from Aladin or Sloan Digital Sky Survey

Software used:TheSky6,CCDSoft 5, MSB Astroart 2.0, 8.0, Paint
Photographer's website:
https://www.flickr.com/photos/odd_trondal/
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