[vsnet-grb 458947] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 17 Sep 20 04:04:43 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     996184,   Seg_Num: 0
GRB_RA:          235.7247d {+15h 42m 53.92s} (J2000),
                 235.9980d {+15h 44m 00.48s} (current),
                 235.0657d {+15h 40m 15.75s} (1950)
GRB_DEC:          -4.7011d {-04d 42' 03.9"} (J2000),
                  -4.7658d {-04d 45' 56.9"} (current),
                  -4.5430d {-04d 32' 34.7"} (1950)
GRB_ERROR:       2.3 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  19109 TJD;   261 DOY;   20/09/17
IMG_START_TIME:  14060.00 SOD {03:54:20.00} UT,   111.7 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       175.17d {+11h 40m 40s}   +2.09d {+02d 05' 31"}
SUN_DIST:         61.16 [deg]   Sun_angle= -4.1 [hr] (East of Sun)
MOON_POSTN:      173.23d {+11h 32m 54s}   +8.32d {+08d 19' 17"}
MOON_DIST:        63.95 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:        2.02, 37.79 [deg] galactic lon,lat of the burst
ECL_COORDS:      234.55, 14.62 [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%.