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TITLE:           GCN/OGLE NOTICE
NOTICE_DATE:     Fri 20 Apr 18 12:30:18 UT
NOTICE_TYPE:     OGLE Lensing Event
SRC_ID_NUM:      201800643
SRC_RA:          270.5214d {+18h 02m 05s} (J2000),
                 270.8077d {+18h 03m 14s} (current),
                 269.7355d {+17h 58m 57s} (1950)
SRC_DEC:         -27.5741d {-27d 34' 26"} (J2000),
                 -27.5729d {-27d 34' 22"} (current),
                 -27.5747d {-27d 34' 28"} (1950)
DISCOVERY_DATE:  18197 TJD;    79 DOY;   18/03/20 (yy/mm/dd)
DISCOVERY_TIME:  45018 SOD {12:30:18.00} UT
LEAD_TIME:       51.709 [days]
MAX_DATE:        18249 TJD;   131 DOY;   18/05/11 (yy/mm/dd)
MAX_TIME:        19871 SOD {05:31:11.99} UT
MAX_UNCERT:      1.740 [days]
CUSP_WIDTH:      11.50 +/- 0.77 [days]
u0:              0.00 +/- 1.37 [RingUnits]
MAX_MAG:         8.4 mag (estimated)
BASE_MAG:        16.73 +/- 0.00 [mag]
AMPLIFICATION:   270.61 +/- 0.00 factor
LC_URL:          http://www.astrouw.edu.pl/~ogle/ogle4/ews/blg-0643.html
SUN_POSTN:        28.28d {+01h 53m 07s}  +11.61d {+11d 36' 20"}
SUN_DIST:        119.58 [deg]   Sun_angle= 7.8 [hr] (West of Sun)
MOON_POSTN:       88.74d {+05h 54m 57s}  +19.96d {+19d 57' 21"}
MOON_DIST:       172.15 [deg]
GAL_COORDS:        3.01, -2.44 [deg] galactic lon,lat of the burst
ECL_COORDS:      270.46, -4.14 [deg] ecliptic lon,lat of the burst
COMMENTS:        OGLE Gravitational Lensing Event.  
COMMENTS:        WARNING: Amax_error was 'nan'.