[Vsnet-alert 8438] Possible outburst of ASAS 160048-4846.2

[Grzegorz Pojmanski]

Possible outburst of ASAS 160048-4846.2  

Grzegorz Pojmanski, Warsaw University Astronomical Observatory reports:
ASAS3V instrument of The All Sky Automated Survey (telephoto lens 180/2.8, 
diameter 65mm + CCD + Johnsons V  filter, 3 minute exposures, pixel size 
14.8 arcsec, rms astrometric accuracy - 4  arcsec) 

has detected outburst of an object (dwarf nova, nova ?)
at RA = 16:00:48,  DEC = -48:46:12.

which is located close to the following USNO-B1 stars:
#          id|           RA|          DEC|    B1|    R1|    B2|    R2|    I2|
 0412-0480751 16:00:47.4933 -48:46:05.330   0.00  15.42  17.88  15.68  15.06 
 0412-0480759 16:00:48.1727 -48:46:19.260   0.00  17.09   0.00  17.33  16.44 
 0412-0480763 16:00:48.2327 -48:46:07.210   0.00  18.40   0.00  18.87  17.99 
 0412-0480779 16:00:49.0653 -48:46:03.070   0.00  16.95  20.72  17.19  16.22 


Observations:
    DATE      UT                       HJD      V
04/06/2005 07:34:20 (Jun 04.316) 2453525.8210 invisible
09/06/2005 02:02:21 (Jun 09.085) 2453530.5904 12.567 
09/06/2005 05:37:37 (Jun 09.235) 2453530.7399 12.660 
09/06/2005 06:50:38 (Jun 09.286) 2453530.7906 12.845
09/06/2005 06:54:10 (Jun 09.288) 2453530.7930 12.818
09/06/2005 06:57:54 (Jun 09.291) 2453530.7956 12.747
09/06/2005 07:01:32 (Jun 09.293) 2453530.7981 12.834
09/06/2005 07:05:22 (Jun 09.296) 2453530.8008 12.667
09/06/2005 07:41:38 (Jun 09.321) 2453530.8260 12.806

Source shows some oscillations, but may fading on average.
 
Light curve and images can be found on
http://www.astrouw.edu.pl/cgi-asas/asas_disc/160048-4846.2,3525

Regards, Grzegorz Pojmanski