[vsnet-grb 371636] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 30 Jun 18 11:25:09 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     845443,   Seg_Num: 0
GRB_RA:           48.9772d {+03h 15m 54.52s} (J2000),
                  47.4944d {+03h 09m 58.66s} (current),
                  53.4291d {+03h 33m 42.98s} (1950)
GRB_DEC:         -87.4782d {-87d 28' 41.5"} (J2000),
                 -87.4096d {-87d 24' 34.5"} (current),
                 -87.6532d {-87d 39' 11.6"} (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:  18299 TJD;   181 DOY;   18/06/30
IMG_START_TIME:  40486.00 SOD {11:14:46.00} UT,   174.2 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:        99.40d {+06h 37m 37s}  +23.15d {+23d 09' 17"}
SUN_DIST:        111.54 [deg]   Sun_angle= 3.5 [hr] (West of Sun)
MOON_POSTN:      305.58d {+20h 22m 18s}  -19.23d {-19d 13' 39"}
MOON_DIST:        71.33 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      301.23,-29.16 [deg] galactic lon,lat of the burst
ECL_COORDS:      274.50,-68.40 [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 0.11% < P(seren) < 0.58%.