Bright Transient in Sgr (PNV J18142514-2554343)

PTS

Patrick Schmeer (SPK, Bischmisheim, Germany) reports theannouncement on the CBAT Transient Object Confirmation Page (TOCP) of thediscovery of a bright transient in Sgr on 2015 February 12.852 at an unfilteredmagnitude of

10.9 by K. Nishiyama, using a 105-mm f/4 camera lens withan SBIG STL6303E CCD camera.  Nishiyamanotes nothing is present on a previous image from

2015 February 02.887. The transient has been independently confirmed with two pre-discoveryimages: by H. Nishimura (Shizuoka-ken, Japan) at magnitude

11.2 on 2015 February 12.840, and by T. Kojima(Gunma-ken, Japan) at magnitude 10.5 on 2015 February 11.841.

The object was designated PNV J18142514-2554343 on theTOCP website.  More information about thediscovery and prediscovery images may be found at the following URL:

http://www.cbat.eps.harvard.edu/unconf/followups/J18142514-2554343.html

Photometry and spectroscopy are all stronglyencouraged.  Spectroscopy is neededurgently to determine whether the object is a nova or some other type oftransient.  A sequence is currently inpreparation.  Observers should note thatthe field is extremely crowded.

The J2000 coordinates for this transient are as follows:

               RA:18 14 25.24 , Dec: -25 54 32.6

Please promptly report all observations to the AAVSOInternational Database using the name PNV J18142514-2554343.

This AAVSO Special Notice was prepared by M. Templeton.