[vsnet-alert 13613] outbursting object in the direction of NGC 4806

Berto Monard bmonard at mweb.co.za
Fri Aug 26 05:03:43 JST 2011


A foreground star to galaxy NGC 4806 has apparently gone into a bright
state. Astrometry vs UCAC2 reference gives a position (2000)
12 56 14.01 -29 29 54.8

Timeseries photometry tonight show no obvious modulation over 30
minutes.
Filter photometry gives magnitudes of 14.5R and 15.0V

Unfiltered CCD photometry from archived images show the following magnitudes
over time. There seems to be a slow built up during the preceding months.


2453820.493  17.4 CR  MLF
2453860.245  17.2 CR  MLF
2453904.282  17.4 CR  MLF
2453906.265  17.6 CR  MLF
2454146.529  17.9 CR  MLF
2454172.547  17.5 CR  MLF
2454206.353  17.7 CR  MLF
2454226.307  17.3 CR  MLF
2454239.250  17.5 CR  MLF
2454258.237  17.4 CR  MLF
2454271.286  17.4 CR  MLF
2454457.564  17.7 CR  MLF
2454499.560  18.1 CR  MLF
2454564.346  18.3 CR  MLF
2454627.230  19.3: CR  MLF
2454645.214  17.9 CR  MLF
2454671.190  17.8 CR  MLF
2454819.568  17.8 CR  MLF
2454837.570  18.1 CR  MLF
2454923.510  18.0 CR  MLF
2454939.388  17.7 CR  MLF
2454964.301  17.4 CR  MLF
2454981.259  17.8 CR  MLF
2455006.278  17.6 CR  MLF
2455023.240  17.4 CR  MLF
2455059.214  17.4 CR  MLF
2455298.333  17.6 CR  MLF
2455352.271  17.5 CR  MLF
2455378.243  17.4 CR  MLF
2455406.207  17.5 CR  MLF
2455603.590  17.0 CR  MLF
2455619.493  17.0 CR  MLF
2455677.405  16.8 CR  MLF
2455715.312  16.4 CR  MLF
2455716.232  16.4 CR  MLF
2455741.294  16.2 CR  MLF
2455776.210  16.0 CR  MLF
2455798.246  14.5 CR  MLF
2455798.216  14.5 CR  MLF


This is not a LPV.


Berto Monard / Klein Karoo Observatory


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