Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PSN J12350637+3114354

PSN J12350637+3114354   2015 02 16.72  *  12 35 06.37 +31 14 35.4  17.9 U    9E  12N            9 9

2015 02 16.72

We discovered this object on February 16.72 2015 UT in the Tsinghua University-NAOC Transient Survey (TNTS), and the magnitude of the object on unfiltered CCD was about 17.9 mag. Discovery and reference images: http://www.thca.tsinghua.edu.cn/~wangxf/TNTS/PSNJ12350637+3114354.png

2015 02 19.0504

Mag.: 16.9(V) R.A.: 12 35 06.24; Decl.: +31 14 35.4 (2000.0). Reference: PPMXL Observer: Massimiliano Martignoni - Observatory: Stazione Astronomica Betelgeuse (B75), Magnago, Italy Telescope: Schmidt-Cassegrain 0.25m-f/10.0 - CCD: KAF0261E

2015 02 20.077

Independetly found by J. Vales on four unfiltered images, obtained on 2015 Feb. 20.077-20.121UT with 0.6-m f/3.3 Cichocki telescope at Črni Vrh Observatory. Coordinates J2000 RA=12:35:06.24 DEC=+31:14:35.4, magnitude 17.2 (bandpass roughly equivalent to the R band). Image http://www.observatorij.org/vstars/PSNJ12350637+3114354.jpg Nothing is visible at this position on archival PIKA images obtained on 2012 Jan. 26 (lim. mag. 19.8), 2011 Mar. 22 (lim. mag. 18.5) and 2011 Feb. 26 (lim. mag. 19.0). H. Mikuz, Crni Vrh Observatory