[vsnet-grb 162711] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 23 Nov 11 18:30:24 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     508319,   Seg_Num: 0
GRB_RA:          154.8463d {+10h 19m 23.11s} (J2000),
                 154.9881d {+10h 19m 57.14s} (current),
                 154.2506d {+10h 17m 00.13s} (1950)
GRB_DEC:         -20.6452d {-20d 38' 42.7"} (J2000),
                 -20.7052d {-20d 42' 18.6"} (current),
                 -20.3938d {-20d 23' 37.7"} (1950)
GRB_ERROR:       3.3 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  15888 TJD;   327 DOY;   11/11/23
IMG_START_TIME:  66315.00 SOD {18:25:15.00} UT,   713.9 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       238.98d {+15h 55m 54s}  -20.38d {-20d 22' 47"}
SUN_DIST:         77.59 [deg]   Sun_angle= 5.6 [hr] (West of Sun)
MOON_POSTN:      216.98d {+14h 27m 56s}  -17.63d {-17d 37' 48"}
MOON_DIST:        58.29 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      261.37, 29.70 [deg] galactic lon,lat of the burst
ECL_COORDS:      165.14,-28.80 [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%.