[vsnet-grb 163805] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 10 Dec 11 14:51:11 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     509419,   Seg_Num: 0
GRB_RA:          191.4770d {+12h 45m 54.48s} (J2000),
                 191.6317d {+12h 46m 31.60s} (current),
                 190.8298d {+12h 43m 19.16s} (1950)
GRB_DEC:          -7.1657d {-07d 09' 56.5"} (J2000),
                  -7.2308d {-07d 13' 50.9"} (current),
                  -6.8926d {-06d 53' 33.1"} (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:  15905 TJD;   344 DOY;   11/12/10
IMG_START_TIME:  52695.00 SOD {14:38:15.00} UT,   71.8 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       257.16d {+17h 08m 38s}  -22.91d {-22d 54' 43"}
SUN_DIST:         64.69 [deg]   Sun_angle= 4.4 [hr] (West of Sun)
MOON_POSTN:       77.39d {+05h 09m 34s}  +22.66d {+22d 39' 40"}
MOON_DIST:       115.11 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      300.50, 55.68 [deg] galactic lon,lat of the burst
ECL_COORDS:      193.35, -2.06 [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%.