[vsnet-grb 489107] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 20 Jun 21 00:17:44 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     1056757,   Seg_Num: 0
GRB_RA:          319.7180d {+21h 18m 52.32s} (J2000),
                 319.9413d {+21h 19m 45.90s} (current),
                 319.1984d {+21h 16m 47.60s} (1950)
GRB_DEC:         +33.8504d {+33d 51' 01.4"} (J2000),
                 +33.9417d {+33d 56' 30.1"} (current),
                 +33.6388d {+33d 38' 19.7"} (1950)
GRB_ERROR:       6.4 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  19385 TJD;   171 DOY;   21/06/20
IMG_START_TIME:  173.00 SOD {00:02:53.00} UT,   207.6 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:        88.82d {+05h 55m 18s}  +23.43d {+23d 25' 53"}
SUN_DIST:        104.82 [deg]   Sun_angle= 8.6 [hr] (West of Sun)
MOON_POSTN:      202.72d {+13h 30m 52s}   -5.43d {-05d 25' 55"}
MOON_DIST:       115.51 [deg]
MOON_ILLUM:      70 [%]
GAL_COORDS:       80.34,-10.92 [deg] galactic lon,lat of the burst
ECL_COORDS:      336.84, 46.44 [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%.