From msz@sirius.astrouw.edu.pl Wed Jun  2 14:04:48 MET 1999
Date: Wed, 2 Jun 1999 13:52:09 +0200
From: Michal Szymanski <msz@sirius.astrouw.edu.pl>
Subject: OGLE-1999-BUL-11 CAUSTIC CROSSING ALERT

CAUSTIC CROSSING ALERT

Observations collected by OGLE during the last night (Jun. 2, 1999)
at the Las Campanas Observatory indicate that the OGLE-1999-BUL-11
binary lens microlensing event candidate is undergoing the second
caustic crossing. The brightness of the object increases rapidly -- by
about 0.6 mag during the 7 hour observing period.

Follow up observations during the following hours are strongly
encouraged !!!

Field          BUL_SC36
StarNo         336761
RA(J2000.0)    18:05:29.59
Dec(J2000.0)   -27:59:14.4
I_0 mag         18.541     0.011
Remarks        Binary Lens Candidate

Finding charts, light curve plots, photometric data (updated regularly)
can be found in:
 
http://www.astrouw.edu.pl/~ftp/ogle/ogle2/ews/bul-11.html
ftp://www.astrouw.edu.pl/ogle/ogle2/ews/1999/bul-11.tar.gz

See also PLANET team information on this event:

http://www.astro.rug.nl/~planet

regards, OGLE team.