[vsnet-grb 121487] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 13 Apr 10 17:54:30 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     419404,   Seg_Num: 0
GRB_RA:          266.2216d {+17h 44m 53.18s} (J2000),
                 266.3371d {+17h 45m 20.91s} (current),
                 265.6599d {+17h 42m 38.37s} (1950)
GRB_DEC:         +15.8339d {+15d 50' 02.0"} (J2000),
                 +15.8302d {+15d 49' 48.6"} (current),
                 +15.8536d {+15d 51' 12.9"} (1950)
GRB_ERROR:       2.2 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  15299 TJD;   103 DOY;   10/04/13
IMG_START_TIME:  63771.00 SOD {17:42:51.00} UT,   562.6 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:        21.93d {+01h 27m 44s}   +9.20d {+09d 11' 53"}
SUN_DIST:        111.51 [deg]   Sun_angle= 7.7 [hr] (West of Sun)
MOON_POSTN:       11.60d {+00h 46m 25s}  +10.39d {+10d 23' 26"}
MOON_DIST:       101.53 [deg]
MOON_ILLUM:      1 [%]
GAL_COORDS:       40.18, 21.69 [deg] galactic lon,lat of the burst
ECL_COORDS:      265.31, 39.21 [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%.