[vsnet-grb 336218] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 10 Aug 17 22:28:31 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     767284,   Seg_Num: 0
GRB_RA:          187.9388d {+12h 31m 45.31s} (J2000),
                 188.1635d {+12h 32m 39.25s} (current),
                 187.3007d {+12h 29m 12.17s} (1950)
GRB_DEC:          +3.6602d {+03d 39' 36.7"} (J2000),
                  +3.5631d {+03d 33' 47.2"} (current),
                  +3.9361d {+03d 56' 10.1"} (1950)
GRB_ERROR:       2.2 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  17975 TJD;   222 DOY;   17/08/10
IMG_START_TIME:  79787.00 SOD {22:09:47.00} UT,   485.9 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       140.91d {+09h 23m 38s}  +15.29d {+15d 17' 21"}
SUN_DIST:         47.95 [deg]   Sun_angle= -3.2 [hr] (East of Sun)
MOON_POSTN:      357.69d {+23h 50m 46s}   -4.02d {-04d 01' 25"}
MOON_DIST:       169.54 [deg]
MOON_ILLUM:      89 [%]
GAL_COORDS:      290.75, 66.07 [deg] galactic lon,lat of the burst
ECL_COORDS:      185.84,  6.51 [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 2.8% < P(seren) < 6.6%.