////////////////////////////////////////////////////////////////////// TITLE: GCN/OGLE NOTICE NOTICE_DATE: Thu 18 Apr 19 20:06:26 UT NOTICE_TYPE: OGLE Lensing Event SRC_ID_NUM: 201900531 SRC_RA: 270.0320d {+18h 00m 08s} (J2000), 270.3335d {+18h 01m 20s} (current), 269.2474d {+17h 56m 59s} (1950) SRC_DEC: -27.3573d {-27d 21' 25"} (J2000), -27.3570d {-27d 21' 24"} (current), -27.3555d {-27d 21' 19"} (1950) DISCOVERY_DATE: 18560 TJD; 77 DOY; 19/03/18 (yy/mm/dd) DISCOVERY_TIME: 72386 SOD {20:06:26.00} UT LEAD_TIME: 32.948 [days] MAX_DATE: 18593 TJD; 110 DOY; 19/04/20 (yy/mm/dd) MAX_TIME: 67910 SOD {18:51:50.39} UT MAX_UNCERT: 0.110 [days] CUSP_WIDTH: 3.15 +/- 0.16 [days] u0: 0.00 +/- 0.12 [RingUnits] MAX_MAG: 7.5 mag (estimated) BASE_MAG: 18.82 +/- 0.00 [mag] AMPLIFICATION: 584.42 +/- 0.00 factor LC_URL: http://www.astrouw.edu.pl/~ogle/ogle4/ews/blg-0531.html SUN_POSTN: 26.48d {+01h 45m 56s} +10.94d {+10d 56' 29"} SUN_DIST: 118.14 [deg] Sun_angle= 7.7 [hr] (West of Sun) MOON_POSTN: 200.48d {+13h 21m 55s} -3.25d {-03d 15' 13"} MOON_DIST: 70.64 [deg] GAL_COORDS: 2.99, -1.95 [deg] galactic lon,lat of the burst ECL_COORDS: 270.03, -3.92 [deg] ecliptic lon,lat of the burst COMMENTS: OGLE Gravitational Lensing Event. COMMENTS: WARNING: Amax_error was 'nan'.