[vsnet-grb 361381] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 29 Mar 18 14:26:14 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     819490,   Seg_Num: 0
GRB_RA:           82.9033d {+05h 31m 36.79s} (J2000),
                  83.0928d {+05h 32m 22.27s} (current),
                  82.3840d {+05h 29m 32.16s} (1950)
GRB_DEC:         -23.6904d {-23d 41' 25.4"} (J2000),
                 -23.6780d {-23d 40' 40.8"} (current),
                 -23.7260d {-23d 43' 33.7"} (1950)
GRB_ERROR:       3.4 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  18206 TJD;    88 DOY;   18/03/29
IMG_START_TIME:  51294.00 SOD {14:14:54.00} UT,   390.0 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:         8.13d {+00h 32m 32s}   +3.51d {+03d 30' 30"}
SUN_DIST:         77.72 [deg]   Sun_angle= -5.0 [hr] (East of Sun)
MOON_POSTN:      166.46d {+11h 05m 49s}   +8.72d {+08d 42' 56"}
MOON_DIST:        87.49 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      226.96,-27.48 [deg] galactic lon,lat of the burst
ECL_COORDS:       80.47,-46.90 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        This is an Update Notice -- the RA,Dec values herein supersede the previous XRT_POS Notice.  
COMMENTS:        TAM values, flux and significance fields are not valid.  
COMMENTS:        This position was automatically generated on the ground using  
COMMENTS:        Photon Counting data telemetered via TDRSS (SPER data).  
COMMENTS:        See http://www.swift.ac.uk/sper/docs.php for details.  
COMMENTS:        This position was enhanced using UVOT field astrometry.  
COMMENTS:        The probability that this is a serendipitous source in the  
COMMENTS:        SPER window is 0.58% < P(seren) < 1.1%.