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TITLE:           GCN/OGLE NOTICE
NOTICE_DATE:     Tue 16 Apr 13 21:04:38 UT
NOTICE_TYPE:     OGLE Lensing Event
SRC_ID_NUM:      201300521
SRC_RA:          273.0481d {+18h 12m 12s} (J2000),
                 273.2573d {+18h 13m 02s} (current),
                 272.2561d {+18h 09m 01s} (1950)
SRC_DEC:         -28.5723d {-28d 34' 19"} (J2000),
                 -28.5683d {-28d 34' 05"} (current),
                 -28.5852d {-28d 35' 06"} (1950)
DISCOVERY_DATE:  16367 TJD;    75 DOY;   13/03/16 (yy/mm/dd)
DISCOVERY_TIME:  75878 SOD {21:04:38.00} UT
LEAD_TIME:       27.185 [days]
MAX_DATE:        16395 TJD;   103 DOY;   13/04/13 (yy/mm/dd)
MAX_TIME:        5443 SOD {01:30:43.20} UT
MAX_UNCERT:      0.010 [days]
CUSP_WIDTH:      8.70 +/- 0.59 [days]
u0:              0.12 +/- 0.01 [RingUnits]
MAX_MAG:         13.2 mag (estimated)
BASE_MAG:        15.49 +/- 0.00 [mag]
AMPLIFICATION:   7.91 +/- 0.82 factor
LC_URL:          http://www.astrouw.edu.pl/~ogle/ogle4/ews/blg-0521.html
SUN_POSTN:        25.08d {+01h 40m 20s}  +10.41d {+10d 24' 50"}
SUN_DIST:        114.05 [deg]   Sun_angle= 7.5 [hr] (West of Sun)
MOON_POSTN:       99.39d {+06h 37m 33s}  +18.95d {+18d 57' 18"}
MOON_DIST:       168.87 [deg]
GAL_COORDS:        3.22, -4.87 [deg] galactic lon,lat of the burst
ECL_COORDS:      272.69, -5.16 [deg] ecliptic lon,lat of the burst
COMMENTS:        OGLE Gravitational Lensing Event.