[vsnet-grb 188354] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 28 Oct 12 05:27:42 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     536897,   Seg_Num: 0
GRB_RA:          271.8994d {+18h 07m 35.85s} (J2000),
                 272.0666d {+18h 08m 15.97s} (current),
                 271.2477d {+18h 04m 59.45s} (1950)
GRB_DEC:          -2.2936d {-02d 17' 36.9"} (J2000),
                  -2.2911d {-02d 17' 28.0"} (current),
                  -2.3012d {-02d 18' 04.4"} (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:  16228 TJD;   302 DOY;   12/10/28
IMG_START_TIME:  18517.00 SOD {05:08:37.00} UT,   245.1 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       212.91d {+14h 11m 38s}  -13.25d {-13d 15' 11"}
SUN_DIST:         59.48 [deg]   Sun_angle= -3.9 [hr] (East of Sun)
MOON_POSTN:       14.81d {+00h 59m 16s}   +9.86d {+09d 51' 26"}
MOON_DIST:       102.95 [deg]
MOON_ILLUM:      98 [%]
GAL_COORDS:       25.83,  8.67 [deg] galactic lon,lat of the burst
ECL_COORDS:      272.03, 21.13 [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 2.8% < P(seren) < 6.6%.