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CBAT "Transient Object Followup Reports"

TCP J17374270+4915116

TCP J17374270+4915116   2024 12 21.1440*  17 37 42.70 +49 15 11.6  12.4 U             Her       9 0

2024 12 21.1440

The 12.4 mag. transient is visible in three 20 sec. images captured around 2024-12-21.1440 UT using the NMW survey's ( http://scan.sai.msu.ru/nmw/ ) second wide-field camera (135mm f/2.0 telephoto lens + unfiltered SBIG STL-11000 CCD) operating at the Astroverty astrofarm in Nizhnii Arkhyz, Karachay-Cherkessia, Russia ( https://astrovert.ru/astrofarm/ ). The unfiltered magnitude zero-point was set using V magnitudes of Tycho-2 stars in the field. The transient position uncertainty is ~10" due to the camera's 13.8"/pix scale. A blue (g= 21.02 +/-0.06, r= 21.07 +/-0.03) Pan-STARRS1 object 167102644265414180 is located at 17:37:42.37 +49:15:10.5 J2000, which is 3.4" from the transient. The discovery images, finder charts and animations may be found at http://scan.sai.msu.ru/~kirx/img/TCPJ17374270+4915116/ ---- Kirill Sokolovsky, Ekaterina Saveleva, Stanislav Korotkiy (Astroverty, Ka-Dar)