[vsnet-grb 263483] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 15 Jun 15 18:47:10 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     643949,   Seg_Num: 0
GRB_RA:          306.0162d {+20h 24m 03.88s} (J2000),
                 306.1675d {+20h 24m 40.19s} (current),
                 305.5268d {+20h 22m 06.43s} (1950)
GRB_DEC:         +33.8673d {+33d 52' 02.2"} (J2000),
                 +33.9180d {+33d 55' 04.7"} (current),
                 +33.7046d {+33d 42' 16.4"} (1950)
GRB_ERROR:       2.4 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  17188 TJD;   166 DOY;   15/06/15
IMG_START_TIME:  66897.00 SOD {18:34:57.00} UT,   198.7 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:        83.86d {+05h 35m 25s}  +23.32d {+23d 18' 59"}
SUN_DIST:        110.04 [deg]   Sun_angle= 9.2 [hr] (West of Sun)
MOON_POSTN:       73.40d {+04h 53m 36s}  +17.87d {+17d 52' 04"}
MOON_DIST:       107.86 [deg]
MOON_ILLUM:      1 [%]
GAL_COORDS:       73.12, -2.09 [deg] galactic lon,lat of the burst
ECL_COORDS:      321.06, 51.12 [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:        This is 0.8" from the X-ray source: X202403.83+335202.0  
COMMENTS:        in the CHANDRA CXOXASSIST catalogue.