[vsnet-grb 337684] GCN/SWIFT_XRT_IMAGE_PROCESSED

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 27 Aug 17 05:15:10 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     769567,   Seg_Num: 0
GRB_RA:          276.1508d {+18h 24m 36.1s} (J2000),
                 276.4595d {+18h 25m 50.2s} (current),
                 275.2761d {+18h 21m 06.2s} (1950)
GRB_DEC:         -40.2016d {-40d 12' 05.7"} (J2000),
                 -40.1908d {-40d 11' 26.9"} (current),
                 -40.2293d {-40d 13' 45.5"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       134 [cnts]
IMG_START_DATE:  17992 TJD;   239 DOY;   17/08/27
IMG_START_TIME:  18872.50 SOD {05:14:32.50} UT,   124.1 [sec] since BAT Trigger Time
CENTROID_X:      282.12,  raw= 282  [pixels]
CENTROID_Y:      270.69,  raw= 271  [pixels]
ROLL:            257.61 [deg]
GAIN:            2
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -65.31
GRB_POS_XRT_Z:   -57.22
IMAGE_URL:       sw00769567000msxps_rw.img
SUN_POSTN:       156.02d {+10h 24m 05s}   +9.99d {+09d 59' 26"}
SUN_DIST:        119.54 [deg]   Sun_angle= -8.0 [hr] (East of Sun)
MOON_POSTN:      219.88d {+14h 39m 31s}  -10.14d {-10d 08' 16"}
MOON_DIST:        58.15 [deg]
MOON_ILLUM:      30 [%]
GAL_COORDS:      353.89,-12.41 [deg] galactic lon,lat of the burst
ECL_COORDS:      274.91,-16.87 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.  
COMMENTS:        The object found at this position is either a very bright burst or a cosmic ray hit.  
COMMENTS:        Examine the XRT Image to differentiate (CRs are much more compact); see examples at:  
COMMENTS:        http://www.swift.psu.edu/xrt/XRT_Postage_Stamp_Image_Photo_Gallery.htm .