[vsnet-grb 143232] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 23 Feb 11 21:37:15 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     446677,   Seg_Num: 0
GRB_RA:          150.2341d {+10h 00m 56.18s} (J2000),
                 150.2995d {+10h 01m 11.87s} (current),
                 149.9404d {+09h 59m 45.68s} (1950)
GRB_DEC:         -68.3018d {-68d 18' 06.4"} (J2000),
                 -68.3557d {-68d 21' 20.4"} (current),
                 -68.0605d {-68d 03' 37.7"} (1950)
GRB_ERROR:       2.5 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  15615 TJD;    54 DOY;   11/02/23
IMG_START_TIME:  77269.00 SOD {21:27:49.00} UT,   120.9 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       336.76d {+22h 27m 02s}   -9.71d {-09d 42' 23"}
SUN_DIST:        101.80 [deg]   Sun_angle= -11.6 [hr] (East of Sun)
MOON_POSTN:      227.84d {+15h 11m 21s}  -21.28d {-21d 16' 44"}
MOON_DIST:        65.70 [deg]
MOON_ILLUM:      62 [%]
GAL_COORDS:      288.18,-10.46 [deg] galactic lon,lat of the burst
ECL_COORDS:      212.08,-67.74 [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 1.1% < P(seren) < 2.8%.