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TITLE:           GCN/OGLE NOTICE
NOTICE_DATE:     Sun 20 May 18 18:46:42 UT
NOTICE_TYPE:     OGLE Lensing Event
SRC_ID_NUM:      201800857
SRC_RA:          268.1071d {+17h 52m 26s} (J2000),
                 268.4078d {+17h 53m 38s} (current),
                 267.2858d {+17h 49m 09s} (1950)
SRC_DEC:         -33.0259d {-33d 01' 32"} (J2000),
                 -33.0290d {-33d 01' 43"} (current),
                 -33.0147d {-33d 00' 52"} (1950)
DISCOVERY_DATE:  18228 TJD;   110 DOY;   18/04/20 (yy/mm/dd)
DISCOVERY_TIME:  67602 SOD {18:46:42.00} UT
LEAD_TIME:       40.486 [days]
MAX_DATE:        18269 TJD;   151 DOY;   18/05/31 (yy/mm/dd)
MAX_TIME:        23155 SOD {06:25:55.20} UT
MAX_UNCERT:      7.020 [days]
CUSP_WIDTH:      46.88 +/- 5.59 [days]
u0:              0.62 +/- 0.06 [RingUnits]
MAX_MAG:         18.8 mag (estimated)
BASE_MAG:        19.41 +/- 0.00 [mag]
AMPLIFICATION:   1.81 +/- 0.13 factor
LC_URL:          http://www.astrouw.edu.pl/~ogle/ogle4/ews/blg-0857.html
SUN_POSTN:        57.51d {+03h 50m 03s}  +20.09d {+20d 05' 07"}
SUN_DIST:        149.64 [deg]   Sun_angle= 9.9 [hr] (West of Sun)
MOON_POSTN:      134.19d {+08h 56m 45s}  +17.45d {+17d 26' 57"}
MOON_DIST:       136.16 [deg]
GAL_COORDS:      357.24, -3.35 [deg] galactic lon,lat of the burst
ECL_COORDS:      268.39, -9.60 [deg] ecliptic lon,lat of the burst
COMMENTS:        OGLE Gravitational Lensing Event.