Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

TCP J20034647+1335125

TCP J20034647+1335125   2020 08 15.5035*  20 03 46.47 +13 35 12.5  12.6 U             Aql       9 0

2020 08 15.504

Discovered by Hideo Nishimura, Kakegawa, Shizuoka-ken, Japan, who found this star on three frames (limit mag.= 13.9) taken with Canon EOS 6D digital camera + 200-mm f/3.2 lens, who writes nothing is visible at the discovery position on three frames taken on 2020 Aug. 14.477 UT with same instrument.

2020 08 15.72

The best progenitor candidate is the blue star PSO J200346.517+133513.266 (gmag. 21.36, rmag. 21.51) with position end figures 46.51s in RA and 13.2" in DE. Other designations are SDSS J200346.50+133513.2 (umag. 21.4, gmag. 21.3, rmag. 21.3, imag. 21.5), GALEX J200346.3+133511 (NUVmag. 21.4), and GALEX J200346.3+133509 (FUVmag. 21.2, NUVmag. 21.9). Recent ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S and Kochanek et al. 2017PASP..129j4502K) light curve and data: https://asas-sn.osu.edu/light_curves/a97c98dc-5e85-4e15-afff-b7125b872c20 – the latest observation is 2020 Aug. 14.313 UT, fainter than gmag. 17.2 —— Patrick Schmeer (Saarbrücken-Bischmisheim, Germany)

2020 08 16.447

follow-up : mag is +13.51U(Rmag) Comparison star UCAC-4 with 0.36m FLI ML1001E 30 sec×55, obs by, Yasuo Sano(Nayoro Hokkaido, Japan) http://sn1997ef.web.fc2.com/sn/variable/2020-tcp-j200346471335125-d-nova.html