[vsnet-alert 26064] TCP J20210770+2914093

[Naoto Kojiguchi]

TCP J20210770+2914093

     Large outburst amplitudes of 9 mag .

TCP J20210770+2914093   2021 07 16.4919*  20 21 07.70 +29 14 09.3  12.0 U             Vul       I 0

2021 07 16.54490
F. Watanabe (Nayoro Observatory, Nayoro, Japan) performed a follow-up observation for this transient using a 0.4-m f/10 Meili telescope (Meade LX200-40ACF) + R-filtered CCD (SBIG STL-1001E) on Jul. 16.545 UT. The magnitude is measured to be R = 11.8 +/- 0.1 (reference stars from UCAC4 Rmag) and the position end figures are given as 7s.67, 10”.0.

2021 7 16.5647
Photometry results were B=13.13, V=12.28, Rc=11.68 and Ic=11.15 with 0.25m (F6.3) SCT + QSI632 CCD. My image is available at http://meineko.sakura.ne.jp/ccd/TCP_J20210770+2914093.jpg Seiichiro Kiyota, Kamagaya, Japan

ASAS-SN Sky Patrol:
https://asas-sn.osu.edu/sky-patrol/coordinate/ebdc551a-b9d1-4e0b-a27c-c2f32b14699e

IDs:
202107.704 +291409.091  Gaia_DR3_1861166838700691968 Plx=--(--) PM=-- pmRA=--(--) pmDE=--(--) G=21.045(0.023) BP-RP=0.772619
202107.703 +291409.108 PS1_143083052821573655 g=21.8509(0.0368) r=21.2930(0.0457) i=21.1342(0.0387) z=20.7171(0.0232)
202107.7092 +291409.092 SDSSJ202107.70+291409.0 u=24.268(1.375) g=22.271(0.121) r=21.684(0.101) i=21.387(0.126) z=21.325(0.418)