[vsnet-grb 369790] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 13 Jun 18 15:54:07 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     840853,   Seg_Num: 0
GRB_RA:          211.5203d {+14h 06m 04.87s} (J2000),
                 211.8072d {+14h 07m 13.71s} (current),
                 210.7458d {+14h 02m 58.98s} (1950)
GRB_DEC:         -43.0722d {-43d 04' 19.9"} (J2000),
                 -43.1596d {-43d 09' 34.6"} (current),
                 -42.8339d {-42d 50' 02.0"} (1950)
GRB_ERROR:       2.1 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  18282 TJD;   164 DOY;   18/06/13
IMG_START_TIME:  56447.00 SOD {15:40:47.00} UT,   268.1 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:        81.94d {+05h 27m 45s}  +23.23d {+23d 13' 46"}
SUN_DIST:        134.39 [deg]   Sun_angle= -8.7 [hr] (East of Sun)
MOON_POSTN:       79.79d {+05h 19m 10s}  +19.38d {+19d 22' 56"}
MOON_DIST:       133.44 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:      317.14, 17.73 [deg] galactic lon,lat of the burst
ECL_COORDS:      224.97,-28.34 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        There is a bright star (mag=6.20) 1.62 arcmin from the XRT position.  
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%.