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TITLE:           GCN/OGLE NOTICE
NOTICE_DATE:     Sun 21 Apr 19 19:42:09 UT
NOTICE_TYPE:     OGLE Lensing Event
SRC_ID_NUM:      201900538
SRC_RA:          267.9256d {+17h 51m 42s} (J2000),
                 268.2305d {+17h 52m 55s} (current),
                 267.1324d {+17h 48m 32s} (1950)
SRC_DEC:         -28.7618d {-28d 45' 41"} (J2000),
                 -28.7654d {-28d 45' 54"} (current),
                 -28.7498d {-28d 44' 58"} (1950)
DISCOVERY_DATE:  18563 TJD;    80 DOY;   19/03/21 (yy/mm/dd)
DISCOVERY_TIME:  70929 SOD {19:42:09.00} UT
LEAD_TIME:       21.511 [days]
MAX_DATE:        18585 TJD;   102 DOY;   19/04/12 (yy/mm/dd)
MAX_TIME:        28684 SOD {07:58:04.79} UT
MAX_UNCERT:      0.070 [days]
CUSP_WIDTH:      15.76 +/- 1.91 [days]
u0:              0.35 +/- 0.06 [RingUnits]
MAX_MAG:         15.8 mag (estimated)
BASE_MAG:        16.93 +/- 0.00 [mag]
AMPLIFICATION:   2.94 +/- 0.46 factor
LC_URL:          http://www.astrouw.edu.pl/~ogle/ogle4/ews/blg-0538.html
SUN_POSTN:        29.27d {+01h 57m 04s}  +11.97d {+11d 57' 56"}
SUN_DIST:        122.81 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:      240.87d {+16h 03m 30s}  -16.92d {-16d 55' 09"}
MOON_DIST:        27.76 [deg]
GAL_COORDS:        0.84, -1.05 [deg] galactic lon,lat of the burst
ECL_COORDS:      268.17, -5.34 [deg] ecliptic lon,lat of the burst
COMMENTS:        OGLE Gravitational Lensing Event.