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TITLE:           GCN/OGLE NOTICE
NOTICE_DATE:     Fri 20 Apr 18 12:30:20 UT
NOTICE_TYPE:     OGLE Lensing Event
SRC_ID_NUM:      201800644
SRC_RA:          271.1680d {+18h 04m 40s} (J2000),
                 271.4567d {+18h 05m 50s} (current),
                 270.3755d {+18h 01m 30s} (1950)
SRC_DEC:         -28.6238d {-28d 37' 25"} (J2000),
                 -28.6215d {-28d 37' 16"} (current),
                 -28.6276d {-28d 37' 38"} (1950)
DISCOVERY_DATE:  18197 TJD;    79 DOY;   18/03/20 (yy/mm/dd)
DISCOVERY_TIME:  45020 SOD {12:30:20.00} UT
LEAD_TIME:       37.681 [days]
MAX_DATE:        18235 TJD;   117 DOY;   18/04/27 (yy/mm/dd)
MAX_TIME:        17452 SOD {04:50:52.80} UT
MAX_UNCERT:      0.450 [days]
CUSP_WIDTH:      5.22 +/- 0.24 [days]
u0:              0.00 +/- 1.38 [RingUnits]
MAX_MAG:         6.2 mag (estimated)
BASE_MAG:        16.66 +/- 0.00 [mag]
AMPLIFICATION:   437.68 +/- 0.00 factor
LC_URL:          http://www.astrouw.edu.pl/~ogle/ogle4/ews/blg-0644.html
SUN_POSTN:        28.28d {+01h 53m 07s}  +11.61d {+11d 36' 20"}
SUN_DIST:        118.97 [deg]   Sun_angle= 7.8 [hr] (West of Sun)
MOON_POSTN:       88.74d {+05h 54m 57s}  +19.96d {+19d 57' 21"}
MOON_DIST:       170.99 [deg]
GAL_COORDS:        2.38, -3.45 [deg] galactic lon,lat of the burst
ECL_COORDS:      271.03, -5.19 [deg] ecliptic lon,lat of the burst
COMMENTS:        OGLE Gravitational Lensing Event.  
COMMENTS:        WARNING: Amax_error was 'nan'.