[vsnet-grb 375687] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 05 Aug 18 13:15:18 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     851855,   Seg_Num: 0
GRB_RA:           25.7816d {+01h 43m 07.58s} (J2000),
                  26.0056d {+01h 44m 01.35s} (current),
                  25.1791d {+01h 40m 42.98s} (1950)
GRB_DEC:         -17.4926d {-17d 29' 33.3"} (J2000),
                 -17.3995d {-17d 23' 58.1"} (current),
                 -17.7439d {-17d 44' 38.1"} (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:  18335 TJD;   217 DOY;   18/08/05
IMG_START_TIME:  47238.00 SOD {13:07:18.00} UT,   281.5 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       135.55d {+09h 02m 11s}  +16.89d {+16d 53' 17"}
SUN_DIST:        113.10 [deg]   Sun_angle= 7.3 [hr] (West of Sun)
MOON_POSTN:       51.76d {+03h 27m 03s}  +13.61d {+13d 36' 30"}
MOON_DIST:        40.10 [deg]
MOON_ILLUM:      42 [%]
GAL_COORDS:      176.69,-74.66 [deg] galactic lon,lat of the burst
ECL_COORDS:       16.91,-26.15 [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%.