Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

TCP J12405814-0159160

TCP J12405814-0159160   2020 04 29.6321*  12 40 58.14 -01 59 16.0  14.0 U             Vir       9 0

2020 04 29.632

Discovered by Tadashi Kojima, Tsumagoi,Gunma-ken, Japan, on three frames under limiting mag.= 15.0 taken by Canon EOS 6D +300mm f/3.2 lens.

2020 04 29.2487

Dwarf nova outburst of the AM CVn star SDSS J124058.03-015919.2. The latest ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S and Kochanek et al. 2017PASP..129j4502K) observations are 2020 April 23.373 UT, fainter than gmag. 17.3; 29.249 UT, 14.3; light curve and data at https://asas-sn.osu.edu/light_curves/ad7a565c-a7ac-4c37-8c7c-f42e522e93ab —— Patrick Schmeer (Saarbrücken-Bischmisheim, Germany)

2020 04 30.445

Mag.= 14.2, position end figures 58s.01, 19".0 observed by T. Noguchi, Chiba-ken, Japan, using 0.23-m f/10 Schmidt Cassegrain + unfiltered CCD(KAF-0261E), An image was posted at http://park8.wakwak.com/~ngc/images/TCPinVir_20200430.jpg.