[vsnet-grb 361595] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 31 Mar 18 04:28:41 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     820347,   Seg_Num: 0
GRB_RA:           66.0241d {+04h 24m 05.78s} (J2000),
                  66.2800d {+04h 25m 07.20s} (current),
                  65.3234d {+04h 21m 17.62s} (1950)
GRB_DEC:         +13.3978d {+13d 23' 52.0"} (J2000),
                 +13.4389d {+13d 26' 19.9"} (current),
                 +13.2831d {+13d 16' 59.2"} (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:  18208 TJD;    90 DOY;   18/03/31
IMG_START_TIME:  15499.00 SOD {04:18:19.00} UT,   203.3 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:         9.58d {+00h 38m 18s}   +4.12d {+04d 07' 26"}
SUN_DIST:         56.68 [deg]   Sun_angle= -3.8 [hr] (East of Sun)
MOON_POSTN:      187.29d {+12h 29m 10s}   +1.32d {+01d 19' 06"}
MOON_DIST:       119.71 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      181.70,-24.42 [deg] galactic lon,lat of the burst
ECL_COORDS:       66.47, -8.10 [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%.