[vsnet-grb 381926] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 30 Sep 18 13:03:50 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     864584,   Seg_Num: 0
GRB_RA:           76.8635d {+05h 07m 27.24s} (J2000),
                  77.0561d {+05h 08m 13.45s} (current),
                  76.3501d {+05h 05m 24.03s} (1950)
GRB_DEC:         -25.1170d {-25d 07' 01.2"} (J2000),
                 -25.0935d {-25d 05' 36.4"} (current),
                 -25.1815d {-25d 10' 53.3"} (1950)
GRB_ERROR:       2.0 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  18391 TJD;   273 DOY;   18/09/30
IMG_START_TIME:  46090.00 SOD {12:48:10.00} UT,   260.7 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       186.73d {+12h 26m 54s}   -2.91d {-02d 54' 22"}
SUN_DIST:        106.44 [deg]   Sun_angle= 7.3 [hr] (West of Sun)
MOON_POSTN:       72.51d {+04h 50m 02s}  +18.52d {+18d 31' 27"}
MOON_DIST:        43.84 [deg]
MOON_ILLUM:      70 [%]
GAL_COORDS:      226.53,-33.14 [deg] galactic lon,lat of the burst
ECL_COORDS:       72.18,-47.75 [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 0.58% < P(seren) < 1.1%.