[vsnet-grb 384352] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 22 Oct 18 17:51:09 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     868312,   Seg_Num: 0
GRB_RA:           56.7920d {+03h 47m 10.08s} (J2000),
                  56.9837d {+03h 47m 56.07s} (current),
                  56.2827d {+03h 45m 07.83s} (1950)
GRB_DEC:         -29.3796d {-29d 22' 46.5"} (J2000),
                 -29.3224d {-29d 19' 20.6"} (current),
                 -29.5331d {-29d 31' 59.1"} (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:  18413 TJD;   295 DOY;   18/10/22
IMG_START_TIME:  63136.00 SOD {17:32:16.00} UT,   122.9 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       207.22d {+13h 48m 53s}  -11.22d {-11d 12' 57"}
SUN_DIST:        130.33 [deg]   Sun_angle= 10.0 [hr] (West of Sun)
MOON_POSTN:        7.04d {+00h 28m 10s}   -1.80d {-01d 48' 10"}
MOON_DIST:        54.81 [deg]
MOON_ILLUM:      96 [%]
GAL_COORDS:      226.91,-51.46 [deg] galactic lon,lat of the burst
ECL_COORDS:       44.79,-47.74 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        There is a bright star (mag=5.90) 9.63 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%.