[vsnet-grb 401275] GCN/SWIFT_XRT_POSITION_UPDATE

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 25 Mar 19 00:15:39 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     894718,   Seg_Num: 0
GRB_RA:           49.6204d {+03h 18m 28.89s} (J2000),
                  49.7787d {+03h 19m 06.87s} (current),
                  49.2090d {+03h 16m 50.16s} (1950)
GRB_DEC:         -47.2121d {-47d 12' 43.5"} (J2000),
                 -47.1429d {-47d 08' 34.3"} (current),
                 -47.3932d {-47d 23' 35.6"} (1950)
GRB_ERROR:       3.6 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  18566 TJD;    83 DOY;   19/03/24
IMG_START_TIME:  85153.00 SOD {23:39:13.00} UT,   3311.4 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:         3.73d {+00h 14m 56s}   +1.62d {+01d 36' 58"}
SUN_DIST:         63.18 [deg]   Sun_angle= -3.1 [hr] (East of Sun)
MOON_POSTN:      235.54d {+15h 42m 09s}  -15.28d {-15d 16' 47"}
MOON_DIST:       117.36 [deg]
MOON_ILLUM:      80 [%]
GAL_COORDS:      257.82,-54.98 [deg] galactic lon,lat of the burst
ECL_COORDS:       22.56,-61.54 [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 0.58% < P(seren) < 1.1%.