[vsnet-grb 318096] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 18 Mar 17 12:31:45 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     743065,   Seg_Num: 0
GRB_RA:          305.6656d {+20h 22m 39.74s} (J2000),
                 305.8440d {+20h 23m 22.56s} (current),
                 305.1474d {+20h 20m 35.37s} (1950)
GRB_DEC:         +28.4065d {+28d 24' 23.4"} (J2000),
                 +28.4625d {+28d 27' 44.9"} (current),
                 +28.2452d {+28d 14' 42.7"} (1950)
GRB_ERROR:       3.7 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  17830 TJD;    77 DOY;   17/03/18
IMG_START_TIME:  44127.00 SOD {12:15:27.00} UT,   210.5 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       358.26d {+23h 53m 02s}   -0.75d {-00d 45' 13"}
SUN_DIST:         58.00 [deg]   Sun_angle= 3.5 [hr] (West of Sun)
MOON_POSTN:      243.69d {+16h 14m 46s}  -15.91d {-15d 54' 46"}
MOON_DIST:        74.68 [deg]
MOON_ILLUM:      70 [%]
GAL_COORDS:       68.46, -4.96 [deg] galactic lon,lat of the burst
ECL_COORDS:      317.72, 46.11 [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:        The probability that this is a serendipitous source in the  
COMMENTS:        SPER window is 0.11% < P(seren) < 0.58%.