[vsnet-grb 344190] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 20 Oct 17 23:18:23 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     780845,   Seg_Num: 0
GRB_RA:           39.2481d {+02h 37m 00.45s} (J2000),
                  39.4933d {+02h 37m 58.40s} (current),
                  38.5604d {+02h 34m 14.50s} (1950)
GRB_DEC:         +15.2037d {+15d 12' 13.3"} (J2000),
                 +15.2803d {+15d 16' 49.1"} (current),
                 +14.9870d {+14d 59' 13.3"} (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:  18046 TJD;   293 DOY;   17/10/20
IMG_START_TIME:  83397.00 SOD {23:09:57.00} UT,   166.2 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       205.77d {+13h 43m 06s}  -10.67d {-10d 40' 26"}
SUN_DIST:        165.86 [deg]   Sun_angle= 11.1 [hr] (West of Sun)
MOON_POSTN:      220.37d {+14h 41m 30s}  -10.50d {-10d 29' 56"}
MOON_DIST:       175.14 [deg]
MOON_ILLUM:      1 [%]
GAL_COORDS:      157.28,-40.52 [deg] galactic lon,lat of the burst
ECL_COORDS:       41.64, -0.13 [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%.