[vsnet-grb 151009] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 10 Jun 11 15:57:40 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     455155,   Seg_Num: 0
GRB_RA:          308.1773d {+20h 32m 42.55s} (J2000),
                 308.1390d {+20h 32m 33.35s} (current),
                 308.3380d {+20h 33m 21.10s} (1950)
GRB_DEC:         +74.8243d {+74d 49' 27.4"} (J2000),
                 +74.8636d {+74d 51' 49.1"} (current),
                 +74.6519d {+74d 39' 06.8"} (1950)
GRB_ERROR:       3.6 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  15722 TJD;   161 DOY;   11/06/10
IMG_START_TIME:  55454.00 SOD {15:24:14.00} UT,   162.0 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:        78.51d {+05h 14m 03s}  +23.02d {+23d 01' 01"}
SUN_DIST:         77.19 [deg]   Sun_angle= 8.7 [hr] (West of Sun)
MOON_POSTN:      187.59d {+12h 30m 22s}   -8.75d {-08d 45' 09"}
MOON_DIST:       106.14 [deg]
MOON_ILLUM:      68 [%]
GAL_COORDS:      108.36, 19.90 [deg] galactic lon,lat of the burst
ECL_COORDS:       50.33, 75.32 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        There is a bright star (mag=5.20) 9.13 arcmin from the XRT position.  
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:        The probability that this is a serendipitous source in the  
COMMENTS:        SPER window is 0.58% < P(seren) < 1.1%.