[vsnet-chat 2166] Re: Nova Oph 1998 (Goranskij)

[aah@nofs.navy.mil]

My astrometry of the Nova yields
17:31:59.78  -19:13:55.6  J2000  (USNO-A2.0, +/- 0.2 crowded field)
in agreement with Goranskij.  The photometry is:

yymmdd   HJD         V     B-V    V-R    R-I
980625  50989.7735 13.090  0.447  0.618  0.197 
                    0.003  0.004  0.006  0.008
980625  50989.7804 13.125  0.309  0.689  0.165
                    0.004  0.004  0.003  0.007
980625  50989.8642 13.145  0.420  0.617  0.227
                    0.001  0.002  0.002  0.009
980626  50990.7646 13.293  0.403  0.614  0.242 
                    0.004  0.006  0.007  0.011
990519  51317.9116 17.303  0.645  0.544  0.670  
                    0.021  0.027  0.031  0.037

Again, the photometry is in agreement with Goranskij.
He measured R=16.63 on Apr 17; my numbers convert
to R=16.76 on May 19.  While these are close to
the USNO-A1.0 star magnitudes, the nova looks like
it continues to fade slowly.  I'd wait a few months
before deciding that we've seen the quiescent
counterpart or its companion.  (V-R) and (R-I) still
don't look like a normal star.
Arne

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