[vsnet-grb 170968] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 20 Mar 12 12:09:14 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     518200,   Seg_Num: 0
GRB_RA:          212.5176d {+14h 10m 04.22s} (J2000),
                 212.6685d {+14h 10m 40.44s} (current),
                 211.9001d {+14h 07m 36.02s} (1950)
GRB_DEC:          +8.6968d {+08d 41' 48.4"} (J2000),
                  +8.6395d {+08d 38' 22.1"} (current),
                  +8.9324d {+08d 55' 56.5"} (1950)
GRB_ERROR:       2.8 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  16006 TJD;    80 DOY;   12/03/20
IMG_START_TIME:  43161.00 SOD {11:59:21.00} UT,   185.4 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:         0.26d {+00h 01m 03s}   +0.11d {+00d 06' 51"}
SUN_DIST:        146.55 [deg]   Sun_angle= 9.8 [hr] (West of Sun)
MOON_POSTN:      336.05d {+22h 24m 13s}   -4.57d {-04d 34' 14"}
MOON_DIST:       123.66 [deg]
MOON_ILLUM:      4 [%]
GAL_COORDS:      351.85, 63.82 [deg] galactic lon,lat of the burst
ECL_COORDS:      207.15, 20.49 [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%.