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TITLE:           GCN/OGLE NOTICE
NOTICE_DATE:     Mon 11 May 15 19:40:58 UT
NOTICE_TYPE:     OGLE Lensing Event
SRC_ID_NUM:      201500991
SRC_RA:          270.4187d {+18h 01m 40s} (J2000),
                 270.6593d {+18h 02m 38s} (current),
                 269.6313d {+17h 58m 32s} (1950)
SRC_DEC:         -27.8205d {-27d 49' 13"} (J2000),
                 -27.8197d {-27d 49' 10"} (current),
                 -27.8206d {-27d 49' 13"} (1950)
DISCOVERY_DATE:  17123 TJD;   101 DOY;   15/04/11 (yy/mm/dd)
DISCOVERY_TIME:  70858 SOD {19:40:58.00} UT
LEAD_TIME:       34.084 [days]
MAX_DATE:        17157 TJD;   135 DOY;   15/05/15 (yy/mm/dd)
MAX_TIME:        78105 SOD {21:41:45.60} UT
MAX_UNCERT:      0.890 [days]
CUSP_WIDTH:      25.76 +/- 1.62 [days]
u0:              0.19 +/- 0.02 [RingUnits]
MAX_MAG:         18.3 mag (estimated)
BASE_MAG:        20.09 +/- 0.01 [mag]
AMPLIFICATION:   5.15 +/- 0.62 factor
LC_URL:          http://www.astrouw.edu.pl/~ogle/ogle4/ews/blg-0991.html
SUN_POSTN:        48.36d {+03h 13m 28s}  +17.95d {+17d 57' 08"}
SUN_DIST:        140.01 [deg]   Sun_angle= 9.2 [hr] (West of Sun)
MOON_POSTN:      326.73d {+21h 46m 54s}   -9.65d {-09d 38' 52"}
MOON_DIST:        55.60 [deg]
GAL_COORDS:        2.75, -2.48 [deg] galactic lon,lat of the burst
ECL_COORDS:      270.37, -4.38 [deg] ecliptic lon,lat of the burst
COMMENTS:        OGLE Gravitational Lensing Event.