[vsnet-grb 370547] GCN/SWIFT_XRT_IMAGE_PROCESSED

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 20 Jun 18 15:52:36 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     843211,   Seg_Num: 0
GRB_RA:          357.5191d {+23h 50m 04.5s} (J2000),
                 357.7625d {+23h 51m 02.9s} (current),
                 356.8566d {+23h 47m 25.5s} (1950)
GRB_DEC:         -57.9639d {-57d 57' 50.0"} (J2000),
                 -57.8612d {-57d 51' 40.2"} (current),
                 -58.2420d {-58d 14' 31.0"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       195 [cnts]
IMG_START_DATE:  18289 TJD;   171 DOY;   18/06/20
IMG_START_TIME:  57120.36 SOD {15:52:00.36} UT,   83.2 [sec] since BAT Trigger Time
CENTROID_X:      309.92,  raw= 310  [pixels]
CENTROID_Y:      285.87,  raw= 286  [pixels]
ROLL:            78.39 [deg]
GAIN:            4
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -29.51
GRB_POS_XRT_Z:   8.31
IMAGE_URL:       sw00843211000msxps_rw.img
SUN_POSTN:        89.21d {+05h 56m 51s}  +23.43d {+23d 26' 04"}
SUN_DIST:        110.43 [deg]   Sun_angle= 6.1 [hr] (West of Sun)
MOON_POSTN:      183.52d {+12h 14m 04s}   +3.10d {+03d 06' 12"}
MOON_DIST:       125.05 [deg]
MOON_ILLUM:      53 [%]
GAL_COORDS:      318.00,-57.33 [deg] galactic lon,lat of the burst
ECL_COORDS:      325.94,-50.23 [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 .