Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PSN J07213165+5545321

PSN J07213165+5545321   2013 11 16.8441*  07 21 31.65 +55 45 32.1  17.6 U    4W   8N  P20784    R 9

2013 11 26.9566

Peiyuan Sun (Weifang, Shandong, China), Zhangwei Jin (Ningbo, Zhejiang, China) and Xing Gao (Urumqi, Xinjiang, China), report the discovery of a possible supernova (mag approximately 17.6) on a 40-s survey images (limiting mag about 19.5) taken by Xing Gao in Xingming ObservationSky Survey (C42) around Nov.16.84411 UT,2013. using an unfiltered CCD ( + Celestron C14 Schmidt-Cassegrain telescope D=350-mm @f/6.9 ). the new object approximately located at R.A. =07h 21m 31s.65 Decl.=+55°45'32".1 (equinox 2000.0). Which is about 3.6" west and 7.5" north of the center of the PGC 20784. Nothing is visible at this position on archival images taken on Nov.07,2013.(limiting mag 19.2) and Nov.05,2013.(limiting mag 19.0) or on the DSS(POSS2/UKSTU Red) from Dec.05,1989(limiting mag about 19.8). NET USNO-A2.0 XM01PS C2013 11 16.84411 07 21 31.65 +55 45 32.1 17.6 V C42 XM01PS C2013 11 26.95668 07 21 31.68 +55 45 32.5 17.1 V C42 All images can be seen from: http://www.xjltp.com/XOSS/XM01PS/XM01PS.htm C42,Xingming Observatory,Mt. Nanshan. Observers P.Sun,Z.Jin,X.Gao,Measurers P.Sun,Z.Jin 0.36-m f/6.9 Schmidt-Cassegrain telescope and CCD.

2013 11 29.897

This transient was observed on 2013 11 29.897 by Gianluca Masi, Francesca Nocentini and Patrick Schmeer, remotely using the 17"-f/6.8 robotic unit part of the Virtual Telescope Project facility in Ceccano, Italy. 120-seconds exposures, unfiltered, show the source at mag. 17.7 (R mags for the reference stars from UCAC-4). We also performed astrometry, getting the following end figures: 31.58s; 32.2" (J2000.0, mean residuals of 0.2" on both axes).

2013 12 01.0562

This object was observed by Federica Luppi and Luca Buzzi from Schiaparelli Observatory, Varese, Italy. In a stack of images totalling 5 minutes of unfiltered exposure time, the object has position end figures 31s.65, 31".8 and magnitude 17.2. Image posted at URL http://www.astrogeo.va.it/pub/TOCP/PSN_P20784.jpg

2013 12 02.9951

Mag.: 17.4(V) R.A.: 07 21 31.69; Decl.: +55 45 32.0 (2000.0). Reference: PPMXL Observer: Massimiliano Martignoni - Observatory: Stazione Astronomica Betelgeuse (B75), Magnago, Italy Telescope: Schmidt-Cassegrain 0.25m-f/10.0 - CCD: KAF0261E