[vsnet-grb 190716] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 28 Nov 12 05:20:04 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     539866,   Seg_Num: 0
GRB_RA:          300.5998d {+20h 02m 23.95s} (J2000),
                 300.6791d {+20h 02m 42.98s} (current),
                 300.2924d {+20h 01m 10.18s} (1950)
GRB_DEC:         +54.2997d {+54d 17' 58.9"} (J2000),
                 +54.3363d {+54d 20' 10.7"} (current),
                 +54.1586d {+54d 09' 31.0"} (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:  16259 TJD;   333 DOY;   12/11/28
IMG_START_TIME:  18537.00 SOD {05:08:57.00} UT,   199.8 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       244.52d {+16h 18m 04s}  -21.37d {-21d 22' 17"}
SUN_DIST:         89.64 [deg]   Sun_angle= -3.7 [hr] (East of Sun)
MOON_POSTN:       60.21d {+04h 00m 49s}  +20.05d {+20d 03' 16"}
MOON_DIST:        89.50 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:       88.27, 12.24 [deg] galactic lon,lat of the burst
ECL_COORDS:      335.11, 70.89 [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%.