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Central Bureau for Astronomical Telegrams -- Image credits

CBAT "Transient Object Followup Reports"

TCP J21220926+4926242

TCP J21220926+4926242   2025 11 18.4214*  21 22 09.26 +49 26 24.2  12.8 U             Cyg       9 9

2025 11 18.42144

Discovered by Shizuo Kaneko, Kakegawa, Shizuoka, Japan, on three frames (10-s exp. limiting mag. 15.2) using Canon EOS 6D mark2 + f=200mm F3.0 lens. --- Isao Endoh and Mikiya Sato (NAOJ)

2025 11 18.63454

follow-up: CV=+13.2 mag, with, the NMW survey camera (135mm f/2.0 telephoto lens + unfiltered ST-8300M CCD). The NMW survey operates at the Astroverty astrofarm in Nizhnii Arkhyz, Karachay-Cherkessia, Russia ---- Stanislav Korotkiy (Astroverty, Ka-Dar), Ekaterina Saveleva, Kirill Sokolovsky (TexasTech)