[vsnet-grb 144439] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 12 Mar 11 18:11:19 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     449074,   Seg_Num: 0
GRB_RA:          157.4816d {+10h 29m 55.58s} (J2000),
                 157.6228d {+10h 30m 29.47s} (current),
                 156.8508d {+10h 27m 24.18s} (1950)
GRB_DEC:          -5.2628d {-05d 15' 46.0"} (J2000),
                  -5.3204d {-05d 19' 13.4"} (current),
                  -5.0062d {-05d 00' 22.3"} (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:  15632 TJD;    71 DOY;   11/03/12
IMG_START_TIME:  64773.00 SOD {17:59:33.00} UT,   235.8 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       352.48d {+23h 29m 56s}   -3.25d {-03d 14' 43"}
SUN_DIST:        162.86 [deg]   Sun_angle= -11.0 [hr] (East of Sun)
MOON_POSTN:       77.98d {+05h 11m 55s}  +23.74d {+23d 44' 24"}
MOON_DIST:        82.73 [deg]
MOON_ILLUM:      48 [%]
GAL_COORDS:      251.02, 42.90 [deg] galactic lon,lat of the burst
ECL_COORDS:      161.19,-13.64 [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%.