[vsnet-grb 190497] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 25 Nov 12 08:44:44 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     539563,   Seg_Num: 0
GRB_RA:          228.5281d {+15h 14m 06.74s} (J2000),
                 228.6156d {+15h 14m 27.75s} (current),
                 228.1892d {+15h 12m 45.41s} (1950)
GRB_DEC:         +55.3136d {+55d 18' 48.9"} (J2000),
                 +55.2661d {+55d 15' 57.8"} (current),
                 +55.4986d {+55d 29' 54.9"} (1950)
GRB_ERROR:       2.4 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  16256 TJD;   330 DOY;   12/11/25
IMG_START_TIME:  30962.00 SOD {08:36:02.00} UT,   214.7 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       241.47d {+16h 05m 52s}  -20.85d {-20d 50' 57"}
SUN_DIST:         76.90 [deg]   Sun_angle= 0.9 [hr] (West of Sun)
MOON_POSTN:       25.33d {+01h 41m 20s}  +13.19d {+13d 11' 19"}
MOON_DIST:       108.79 [deg]
MOON_ILLUM:      91 [%]
GAL_COORDS:       90.44, 51.85 [deg] galactic lon,lat of the burst
ECL_COORDS:      189.66, 67.52 [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 0.11% < P(seren) < 0.58%.