Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

CBAT "Transient Object Followup Reports"

TCP J12321211-2407556

TCP J12321211-2407556   2020 04 05.0749*  12 32 12.11 -24 07 55.6  14.6 U              Crv      9 0

2020 04 05.0749

Discovered by C. Jacques, C. Colesanti, C.H. Barreto, E. Pimentel, I. Mussi, J. Ribeiro, M. Domingues, J. Amancio,L. Amaral,P. Holvorcem, T. Napoleao on behalf of the Brazilian Transient Search - BraTS - at SONEAR Observatory, Oliveira, Brazil in three frames with 10 seconds exposure using an astrograph 280mm f/2.2 + CCD unfiltered, with magnitude 14.6 under limiting mag = 17.2. Nothing is visible at this location on the previous frame (limiting mag = 17.2) taken on 2020 Mar 26.0611 UT.

2020 03 25.2488

The likely progenitor is the blue star PSO J123212.132-240755.814 (gmag. 21.1, rmag. 21.3, imag. 21.3) with position end figures 12.134s in RA and 55.82 in DE (J2000.0). Other designations are GSC2.3 S6NB010820 (Bjmag. 21.7) and GALEX J123212.2-240758 (NUVmag. 21.3). No brightenings were recorded by the ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S and Kochanek et al. 2017PASP..129j4502K) between 2012 Feb. 27 / 2013 Dec. 11 and 2020 Mar. 25, the latest published observation (gmag. fainter than 17.3) was obtained on Mar. 25.249 UT; complete light curve at https://asas-sn.osu.edu/light_curves/ddfd3d4a-edcd-4578-9abf-56df2850fa9b —— Patrick Schmeer (Saarbrücken-Bischmisheim, Germany)

2020 04 05.60028

Mag. 14.9 R, 14.0 B, 14.4 V, 15.3 I and J2000.0 position end figures 12.12s, 55.9" on a 120-s exposure taken with the 0.50-m f/6.8 reflector + CCD at iTelescope.NET, SSO, Australia. observers E. Pimentel, C. Jacques, L. Amaral, C. Colesanti, I. Mussi, J. Ribeiro, M. Domingues, J. Amancio, P. Holvorcem, T. Napoleao, C.H.Barreto on behalf of the Brazilian Transient Search (BraTS).

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