Observations of the poorly studied dwarf nova NSV 15086

NSV 15086 is a poorly studied and rather neglected possible dwarf nova (UG:), with a listed magnitude range of 14.1 - 15.1. The object is also included in the First Byurakan Survey catalogue of galaxies with UV continuum (Markarian galaxies), as FBS 0022-021.

The object was reported [vsnet-campaign-dn 3083] to be undergoing a brightening on 2002, Dec 7.576 UT by Andrew Pearce, who observed it at visual mag 14.8 (he reported it <15.0 four nights earlier). 

I included NSV 15086 in an unfiltered CCD observing session on 2002, Dec 8/9, for a total of 2.6 hours. I used the 35-cm f/6.3 telescope and ST-7 CCD of CBA Belgium Observatory.

The object was around mag 15.6 (unfiltered mag) during the run. The resulting light curve, shown at left, is nearly constant and shows no modulations > 0.1 mag over the observed time span.

Follow-up observations are strongly encouraged to determine the further behaviour of this variable star.

The coordinates and alternative designations of NSV 15086 are :

GSC4665.118 002452.50 -015334.8 (2000.0) 14.96
GSC4665.118 002452.55 -015335.2 (2000.0) 15.01
USNO0825.00098726 002452.550 -015335.21 (2000.0) 14.1 15.1
002452.4 -015333 (2000.0) UM239
002452.4 -015334 (2000.0) NSV15086 UG 15 - P - - - pec(UG)

 

 
 

 

 

Copyright © 2002 - Tonny Vanmunster.