[vsnet-grb 492811] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 22 Jul 21 21:14:29 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     1061223,   Seg_Num: 0
GRB_RA:           27.0303d {+01h 48m 07.27s} (J2000),
                  27.3005d {+01h 49m 12.11s} (current),
                  26.4040d {+01h 45m 36.95s} (1950)
GRB_DEC:          -6.3475d {-06d 20' 51.0"} (J2000),
                  -6.2407d {-06d 14' 26.6"} (current),
                  -6.5962d {-06d 35' 46.2"} (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:  19417 TJD;   203 DOY;   21/07/22
IMG_START_TIME:  75669.00 SOD {21:01:09.00} UT,   387.0 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       122.47d {+08h 09m 52s}  +20.09d {+20d 05' 20"}
SUN_DIST:         96.97 [deg]   Sun_angle= 6.3 [hr] (West of Sun)
MOON_POSTN:      285.27d {+19h 01m 05s}  -25.66d {-25d 39' 27"}
MOON_DIST:        98.03 [deg]
MOON_ILLUM:      98 [%]
GAL_COORDS:      158.44,-65.23 [deg] galactic lon,lat of the burst
ECL_COORDS:       22.71,-16.33 [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%.