[vsnet-grb 493063] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 25 Jul 21 04:00:21 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     1061511,   Seg_Num: 0
GRB_RA:          215.3737d {+14h 21m 29.68s} (J2000),
                 215.6515d {+14h 22m 36.35s} (current),
                 214.7302d {+14h 18m 55.24s} (1950)
GRB_DEC:          -1.1931d {-01d 11' 35.1"} (J2000),
                  -1.2908d {-01d 17' 26.9"} (current),
                  -0.9652d {-00d 57' 54.6"} (1950)
GRB_ERROR:       1.9 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  19420 TJD;   206 DOY;   21/07/25
IMG_START_TIME:  13813.00 SOD {03:50:13.00} UT,   190.1 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       124.73d {+08h 18m 55s}  +19.61d {+19d 36' 33"}
SUN_DIST:         91.30 [deg]   Sun_angle= -6.1 [hr] (East of Sun)
MOON_POSTN:      320.37d {+21h 21m 30s}  -20.39d {-20d 23' 23"}
MOON_DIST:       103.32 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:      343.98, 54.34 [deg] galactic lon,lat of the burst
ECL_COORDS:      213.49, 12.19 [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 0.11% < P(seren) < 0.58%.