Skip to main content

Special Notice #398: Bright Transient in Sgr (PNV J18142514-2554343)

February 13, 20115:  Patrick Schmeer (SPK, Bischmisheim, Germany) reports the announcement on the CBAT Transient Object Confirmation Page (TOCP) of the discovery of a bright transient in Sgr on 2015 February 12.852 at an unfiltered magnitude of 10.9 by K. Nishiyama, using a 105-mm f/4 camera lens with an SBIG STL6303E CCD camera.  Nishiyama notes nothing is present on a previous image from 2015 February 02.887.  The transient has been independently confirmed with two pre-discovery images: 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 the TOCP website.  More information about the discovery 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 strongly encouraged.  Spectroscopy is needed urgently to determine whether the object is a nova or some other type of transient.  A sequence is currently in preparation.  Observers should note that the 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 AAVSO International Database using the name PNV J18142514-2554343.

This AAVSO Special Notice was prepared by M. Templeton.

----------------------------------

SUBMIT OBSERVATIONS TO THE AAVSO

Information on submitting observations to the AAVSO may be found at:
http://www.aavso.org/webobs

SPECIAL NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION

A Special Notice archive is available at the following URL:
http://www.aavso.org/special-notice-archive

Subscribing and Unsubscribing may be done at the following URL:
http://www.aavso.org/observation-notification#specialnotices

-------------------------------------------------

Please support the AAVSO and its mission -- Join or donate today:
http://www.aavso.org/apps/donate/

AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484