[vsnet-grb 493253] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 26 Jul 21 19:33:23 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     1061687,   Seg_Num: 0
GRB_RA:          193.2908d {+12h 53m 09.79s} (J2000),
                 193.5575d {+12h 54m 13.79s} (current),
                 192.6722d {+12h 50m 41.33s} (1950)
GRB_DEC:         +19.1898d {+19d 11' 23.2"} (J2000),
                 +19.0730d {+19d 04' 22.8"} (current),
                 +19.4611d {+19d 27' 39.9"} (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:  19421 TJD;   207 DOY;   21/07/26
IMG_START_TIME:  69622.00 SOD {19:20:22.00} UT,   78.3 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       126.35d {+08h 25m 25s}  +19.25d {+19d 14' 43"}
SUN_DIST:         63.04 [deg]   Sun_angle= -4.5 [hr] (East of Sun)
MOON_POSTN:      342.62d {+22h 50m 30s}  -12.87d {-12d 52' 04"}
MOON_DIST:       149.67 [deg]
MOON_ILLUM:      91 [%]
GAL_COORDS:      305.88, 82.05 [deg] galactic lon,lat of the burst
ECL_COORDS:      184.26, 22.83 [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%.