//////////////////////////////////////////////////////////////////////
TITLE:           GCN/OGLE NOTICE
NOTICE_DATE:     Tue 16 Apr 19 19:57:28 UT
NOTICE_TYPE:     OGLE Lensing Event
SRC_ID_NUM:      201900520
SRC_RA:          271.7576d {+18h 07m 02s} (J2000),
                 272.0558d {+18h 08m 13s} (current),
                 270.9812d {+18h 03m 55s} (1950)
SRC_DEC:         -26.0238d {-26d 01' 25"} (J2000),
                 -26.0202d {-26d 01' 12"} (current),
                 -26.0305d {-26d 01' 49"} (1950)
DISCOVERY_DATE:  18558 TJD;    75 DOY;   19/03/16 (yy/mm/dd)
DISCOVERY_TIME:  71848 SOD {19:57:28.00} UT
LEAD_TIME:       22.772 [days]
MAX_DATE:        18581 TJD;    98 DOY;   19/04/08 (yy/mm/dd)
MAX_TIME:        52185 SOD {14:29:45.59} UT
MAX_UNCERT:      1.870 [days]
CUSP_WIDTH:      27.16 +/- 2.42 [days]
u0:              0.97 +/- 0.01 [RingUnits]
MAX_MAG:         18.8 mag (estimated)
BASE_MAG:        19.10 +/- 0.00 [mag]
AMPLIFICATION:   1.36 +/- 0.01 factor
LC_URL:          http://www.astrouw.edu.pl/~ogle/ogle4/ews/blg-0520.html
SUN_POSTN:        24.62d {+01h 38m 29s}  +10.24d {+10d 14' 14"}
SUN_DIST:        114.67 [deg]   Sun_angle= 7.5 [hr] (West of Sun)
MOON_POSTN:      173.22d {+11h 32m 54s}   +7.66d {+07d 39' 42"}
MOON_DIST:       101.26 [deg]
GAL_COORDS:        4.91, -2.64 [deg] galactic lon,lat of the burst
ECL_COORDS:      271.58, -2.59 [deg] ecliptic lon,lat of the burst
COMMENTS:        OGLE Gravitational Lensing Event.