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TITLE:           GCN/OGLE NOTICE
NOTICE_DATE:     Tue 28 Mar 17 18:31:52 UT
NOTICE_TYPE:     OGLE Lensing Event
SRC_ID_NUM:      201700421
SRC_RA:          271.2907d {+18h 05m 10s} (J2000),
                 271.5645d {+18h 06m 15s} (current),
                 270.4931d {+18h 01m 58s} (1950)
SRC_DEC:         -29.4347d {-29d 26' 04"} (J2000),
                 -29.4323d {-29d 25' 55"} (current),
                 -29.4390d {-29d 26' 20"} (1950)
DISCOVERY_DATE:  17812 TJD;    59 DOY;   17/02/28 (yy/mm/dd)
DISCOVERY_TIME:  66712 SOD {18:31:52.00} UT
LEAD_TIME:       33.826 [days]
MAX_DATE:        17846 TJD;    93 DOY;   17/04/03 (yy/mm/dd)
MAX_TIME:        51667 SOD {14:21:07.20} UT
MAX_UNCERT:      3.380 [days]
CUSP_WIDTH:      14.23 +/- 2.10 [days]
u0:              0.68 +/- 0.12 [RingUnits]
MAX_MAG:         18.4 mag (estimated)
BASE_MAG:        18.95 +/- 0.00 [mag]
AMPLIFICATION:   1.70 +/- 0.22 factor
LC_URL:          http://www.astrouw.edu.pl/~ogle/ogle4/ews/blg-0421.html
SUN_POSTN:         7.60d {+00h 30m 23s}   +3.28d {+03d 16' 47"}
SUN_DIST:         96.86 [deg]   Sun_angle= 6.4 [hr] (West of Sun)
MOON_POSTN:       17.14d {+01h 08m 33s}   +3.44d {+03d 26' 41"}
MOON_DIST:       105.24 [deg]
GAL_COORDS:        1.72, -3.94 [deg] galactic lon,lat of the burst
ECL_COORDS:      271.13, -6.00 [deg] ecliptic lon,lat of the burst
COMMENTS:        OGLE Gravitational Lensing Event.