[vsnet-alert 5152] OGLE-2000-BUL-46 UPDATE

[OGLE account <ogle@astrouw.edu.pl>]

BINARY MICROLENSING OGLE-2000-BUL-46 UPDATE

Observations collected by OGLE at the Las Campanas Observatory during
the last nights indicate that the  rapid brightenning in
OGLE-2000-BUL-46 microlensing event observed on July 19/20 2000 was most
likely the first caustic crossing. After that episode the brightness of
the star faded gradually with characteristic 'U' shape of the light
curve. Observations colected during the last night (July 25/26, 2000)
indicate that the brightness of the object began to rise again
indicating possible second caustic crossing within the few next days.

Follow up observations are strongly encouraged !!!

OGLE-2000-BUL-46

Field          BUL_SC4
StarNo         746833
RA(J2000.0)    17:54:55.36
Dec(J2000.0)   -29:24:59.8


Finding charts, light curve plots, photometric data (updated regularly)
can be found at:

http://vsnet.astrouw.edu.pl/~ogle/ogle2/ews/bul-46.html
http://vsnet.astrouw.edu.pl/ogle/ogle2/ews/2000/bul-46.tar.gz
 
*** Modelling of the event by Dr Shude Mao can be found at:

http://astro.Princeton.EDU/~mao/model-ogle-46.html

regards, OGLE team.

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