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TITLE:           GCN/OGLE NOTICE
NOTICE_DATE:     Mon 09 Apr 18 19:54:02 UT
NOTICE_TYPE:     OGLE Lensing Event
SRC_ID_NUM:      201800551
SRC_RA:          273.1920d {+18h 12m 46s} (J2000),
                 273.4774d {+18h 13m 55s} (current),
                 272.4074d {+18h 09m 38s} (1950)
SRC_DEC:         -27.3881d {-27d 23' 16"} (J2000),
                 -27.3822d {-27d 22' 55"} (current),
                 -27.4017d {-27d 24' 05"} (1950)
DISCOVERY_DATE:  18186 TJD;    68 DOY;   18/03/09 (yy/mm/dd)
DISCOVERY_TIME:  71642 SOD {19:54:02.00} UT
LEAD_TIME:       45.277 [days]
MAX_DATE:        18232 TJD;   114 DOY;   18/04/24 (yy/mm/dd)
MAX_TIME:        9158 SOD {02:32:38.40} UT
MAX_UNCERT:      4.290 [days]
CUSP_WIDTH:      25.25 +/- 1.93 [days]
u0:              1.24 +/- 0.07 [RingUnits]
MAX_MAG:         15.4 mag (estimated)
BASE_MAG:        15.58 +/- 0.00 [mag]
AMPLIFICATION:   1.20 +/- 0.02 factor
LC_URL:          http://www.astrouw.edu.pl/~ogle/ogle4/ews/blg-0551.html
SUN_POSTN:        18.39d {+01h 13m 33s}   +7.79d {+07d 47' 10"}
SUN_DIST:        106.78 [deg]   Sun_angle= 7.0 [hr] (West of Sun)
MOON_POSTN:      308.59d {+20h 34m 22s}  -18.12d {-18d 06' 56"}
MOON_DIST:        33.55 [deg]
GAL_COORDS:        4.32, -4.42 [deg] galactic lon,lat of the burst
ECL_COORDS:      272.84, -3.98 [deg] ecliptic lon,lat of the burst
COMMENTS:        OGLE Gravitational Lensing Event.