////////////////////////////////////////////////////////////////////// TITLE: GCN/OGLE NOTICE NOTICE_DATE: Mon 26 Feb 18 20:30:23 UT NOTICE_TYPE: OGLE Lensing Event SRC_ID_NUM: 201800253 SRC_RA: 272.3174d {+18h 09m 16s} (J2000), 272.6068d {+18h 10m 26s} (current), 271.5166d {+18h 06m 04s} (1950) SRC_DEC: -29.9371d {-29d 56' 13"} (J2000), -29.9328d {-29d 55' 57"} (current), -29.9464d {-29d 56' 46"} (1950) DISCOVERY_DATE: 18144 TJD; 26 DOY; 18/01/26 (yy/mm/dd) DISCOVERY_TIME: 73823 SOD {20:30:23.00} UT LEAD_TIME: 23.651 [days] MAX_DATE: 18168 TJD; 50 DOY; 18/02/19 (yy/mm/dd) MAX_TIME: 43631 SOD {12:07:11.99} UT MAX_UNCERT: 0.910 [days] CUSP_WIDTH: 11.74 +/- 3.18 [days] u0: 1.28 +/- 0.03 [RingUnits] MAX_MAG: 17.4 mag (estimated) BASE_MAG: 17.54 +/- 0.00 [mag] AMPLIFICATION: 1.19 +/- 0.01 factor LC_URL: http://www.astrouw.edu.pl/~ogle/ogle4/ews/blg-0253.html SUN_POSTN: 339.84d {+22h 39m 22s} -8.50d {-08d 29' 45"} SUN_DIST: 66.08 [deg] Sun_angle= 4.5 [hr] (West of Sun) MOON_POSTN: 116.87d {+07h 47m 30s} +19.49d {+19d 29' 17"} MOON_DIST: 155.68 [deg] GAL_COORDS: 1.71, -4.96 [deg] galactic lon,lat of the burst ECL_COORDS: 272.02, -6.51 [deg] ecliptic lon,lat of the burst COMMENTS: OGLE Gravitational Lensing Event.