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TITLE:           GCN/OGLE NOTICE
NOTICE_DATE:     Fri 07 Sep 18 21:20:19 UT
NOTICE_TYPE:     OGLE Lensing Event
SRC_ID_NUM:      201801640
SRC_RA:          268.5076d {+17h 54m 02s} (J2000),
                 268.8052d {+17h 55m 13s} (current),
                 267.7077d {+17h 50m 50s} (1950)
SRC_DEC:         -29.8130d {-29d 48' 46"} (J2000),
                 -29.8154d {-29d 48' 55"} (current),
                 -29.8038d {-29d 48' 13"} (1950)
DISCOVERY_DATE:  18337 TJD;   219 DOY;   18/08/07 (yy/mm/dd)
DISCOVERY_TIME:  76819 SOD {21:20:19.00} UT
LEAD_TIME:       31.466 [days]
MAX_DATE:        18369 TJD;   251 DOY;   18/09/08 (yy/mm/dd)
MAX_TIME:        30671 SOD {08:31:11.99} UT
MAX_UNCERT:      0.990 [days]
CUSP_WIDTH:      10.72 +/- 0.87 [days]
u0:              0.68 +/- 0.02 [RingUnits]
MAX_MAG:         18.3 mag (estimated)
BASE_MAG:        18.88 +/- 0.00 [mag]
AMPLIFICATION:   1.71 +/- 0.05 factor
LC_URL:          http://www.astrouw.edu.pl/~ogle/ogle4/ews/blg-1640.html
SUN_POSTN:       166.37d {+11h 05m 30s}   +5.83d {+05d 49' 51"}
SUN_DIST:        103.67 [deg]   Sun_angle= -6.8 [hr] (East of Sun)
MOON_POSTN:      142.20d {+09h 28m 47s}  +16.31d {+16d 18' 48"}
MOON_DIST:       129.51 [deg]
GAL_COORDS:        0.19, -2.02 [deg] galactic lon,lat of the burst
ECL_COORDS:      268.70, -6.38 [deg] ecliptic lon,lat of the burst
COMMENTS:        OGLE Gravitational Lensing Event.