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TITLE:           GCN/OGLE NOTICE
NOTICE_DATE:     Fri 20 Apr 18 12:30:12 UT
NOTICE_TYPE:     OGLE Lensing Event
SRC_ID_NUM:      201800640
SRC_RA:          269.0747d {+17h 56m 18s} (J2000),
                 269.3684d {+17h 57m 28s} (current),
                 268.2688d {+17h 53m 05s} (1950)
SRC_DEC:         -30.7223d {-30d 43' 19"} (J2000),
                 -30.7237d {-30d 43' 24"} (current),
                 -30.7158d {-30d 42' 56"} (1950)
DISCOVERY_DATE:  18197 TJD;    79 DOY;   18/03/20 (yy/mm/dd)
DISCOVERY_TIME:  45012 SOD {12:30:12.00} UT
LEAD_TIME:       34.201 [days]
MAX_DATE:        18231 TJD;   113 DOY;   18/04/23 (yy/mm/dd)
MAX_TIME:        62380 SOD {17:19:40.80} UT
MAX_UNCERT:      1.850 [days]
CUSP_WIDTH:      10.21 +/- 1.40 [days]
u0:              0.46 +/- 0.11 [RingUnits]
MAX_MAG:         19.0 mag (estimated)
BASE_MAG:        19.92 +/- 0.00 [mag]
AMPLIFICATION:   2.31 +/- 0.50 factor
LC_URL:          http://www.astrouw.edu.pl/~ogle/ogle4/ews/blg-0640.html
SUN_POSTN:        28.28d {+01h 53m 07s}  +11.61d {+11d 36' 20"}
SUN_DIST:        120.66 [deg]   Sun_angle= 7.9 [hr] (West of Sun)
MOON_POSTN:       88.74d {+05h 54m 57s}  +19.96d {+19d 57' 21"}
MOON_DIST:       169.22 [deg]
GAL_COORDS:      359.65, -2.90 [deg] galactic lon,lat of the burst
ECL_COORDS:      269.20, -7.29 [deg] ecliptic lon,lat of the burst
COMMENTS:        OGLE Gravitational Lensing Event.