[vsnet-alert 18085] TCP J16054809+2405338: new transient (12.6 mag) in Serpens

[Patrick Schmeer]

TCP J16054809+2405338

R.A. 16h05m48.09s  Decl. +24°05'33.8"  (J2000.0)
2014 Dec. 20.8706 UT, 12.6 mag (CCD, unfiltered)
Discoverer: Hideo Nishimura (Kakegawa, Japan)

"2014 12 20.8706
Hideo Nishimura, Kakegawa, Japan, reports his detection
of a bright object (mag 12.6) on four images taken with
Canon EOS-5D + 200mmF3.2 lens (20s exposures,
limiting mag about 13.0). No object was detected on an
image taken on Dec. 2 UT (limiting mag about 13.0) or
one taken on Dec. 5 UT (limiting mag about 12.0).
In neighbourhood of reported coodinates,
SDSS J160547.99+240531.0 (quasar or AM CVn
candidate) exists."

http://www.cbat.eps.harvard.edu/unconf/followups/J16054809+2405338.html

This SDSS object is also a GALEX source:
GALEX J160548.0+240530 (FUV= 19.7, NUV= 19.6 mag)

CV candidate (19 mag at quiescence)

More possible identifications:
- USNO-B1.0 1140-0231774 (16 05 47.984 +24 05 31.23)
B1= 18.61, R1= 19.03, B2= 20.42, R2= 19.04 mag
- GSC 2.3 N5S0011676 (16 05 47.991 +24 05 30.70)
V= 18.76, F= 19.27, j= 19.79, N= 19.22 mag
- AllWISE J160548.00+240531.2 (16 05 48.006 +24 05 31.27)
W1= 17.455, W2= 17.220 mag

Clear skies,
Patrick