[vsnet-grb 343876] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 19 Oct 17 05:01:04 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     780203,   Seg_Num: 0
GRB_RA:          251.7923d {+16h 47m 10.15s} (J2000),
                 252.1175d {+16h 48m 28.20s} (current),
                 250.8803d {+16h 43m 31.26s} (1950)
GRB_DEC:         -45.8718d {-45d 52' 18.4"} (J2000),
                 -45.9025d {-45d 54' 08.9"} (current),
                 -45.7827d {-45d 46' 57.7"} (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:  18045 TJD;   292 DOY;   17/10/19
IMG_START_TIME:  17469.00 SOD {04:51:09.00} UT,   141.0 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       204.11d {+13h 36m 27s}  -10.04d {-10d 02' 33"}
SUN_DIST:         54.29 [deg]   Sun_angle= -3.2 [hr] (East of Sun)
MOON_POSTN:      199.17d {+13h 16m 40s}   -3.49d {-03d 29' 21"}
MOON_DIST:        62.47 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:      339.55, -0.43 [deg] galactic lon,lat of the burst
ECL_COORDS:      256.30,-23.29 [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 1.7" from the X-ray source: X164710.21-455217.1  
COMMENTS:        in the CHANDRA CXOXASSIST catalogue.