[vsnet-grb 165075] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 28 Dec 11 16:06:00 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     510649,   Seg_Num: 0
GRB_RA:          150.0672d {+10h 00m 16.12s} (J2000),
                 150.2318d {+10h 00m 55.62s} (current),
                 149.3799d {+09h 57m 31.18s} (1950)
GRB_DEC:         +18.2977d {+18d 17' 51.7"} (J2000),
                 +18.2398d {+18d 14' 23.3"} (current),
                 +18.5381d {+18d 32' 17.2"} (1950)
GRB_ERROR:       2.1 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  15923 TJD;   362 DOY;   11/12/28
IMG_START_TIME:  57045.00 SOD {15:50:45.00} UT,   361.4 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       277.15d {+18h 28m 35s}  -23.27d {-23d 16' 28"}
SUN_DIST:        130.37 [deg]   Sun_angle= 8.5 [hr] (West of Sun)
MOON_POSTN:      326.51d {+21h 46m 02s}   -8.17d {-08d 10' 16"}
MOON_DIST:       169.30 [deg]
MOON_ILLUM:      18 [%]
GAL_COORDS:      216.33, 49.75 [deg] galactic lon,lat of the burst
ECL_COORDS:      145.78,  5.72 [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%.