[vsnet-grb 350581] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 22 Dec 17 16:43:01 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     799669,   Seg_Num: 0
GRB_RA:          148.2778d {+09h 53m 06.67s} (J2000),
                 148.5456d {+09h 54m 10.94s} (current),
                 147.5308d {+09h 50m 07.39s} (1950)
GRB_DEC:         +35.6266d {+35d 37' 35.7"} (J2000),
                 +35.5414d {+35d 32' 28.8"} (current),
                 +35.8625d {+35d 51' 44.8"} (1950)
GRB_ERROR:       2.3 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  18109 TJD;   356 DOY;   17/12/22
IMG_START_TIME:  59663.00 SOD {16:34:23.00} UT,   563.2 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       271.12d {+18h 04m 29s}  -23.43d {-23d 25' 56"}
SUN_DIST:        129.28 [deg]   Sun_angle= 8.2 [hr] (West of Sun)
MOON_POSTN:      321.54d {+21h 26m 09s}  -15.45d {-15d 26' 45"}
MOON_DIST:       158.95 [deg]
MOON_ILLUM:      17 [%]
GAL_COORDS:      188.90, 51.34 [deg] galactic lon,lat of the burst
ECL_COORDS:      137.94, 21.37 [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%.