Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

TCP J00392037+5822091

TCP J00392037+5822091   2021 07 24.3064*  00 39 20.37 +58 22 09.1  16.4 C             Cas       0 0

2021 07 24.3064

Discovered by B. Kumar (Golden Ears Observatory Transient Survey - GEOTS) at Golden Ears Observatory, Maple Ridge, BC, Canada, in three 30-second unfiltered exposures using a 0.36-m f/2 Schmidt-Cassegrain + CCD, with magnitude 16.4 under limiting magnitude 18.0. Nothing is visible at this position on archival images taken on 2021 July 21.3742 UT (limiting mag 18.0).

2025 07 02.37072

An outburst of this transient (GMag: 17) was observed at Golden Ears Observatory. https://www.wis-tns.org/system/files/uploaded/GEOTS/tns_2021tzn_atrep_261246_GEOTS.png