[vsnet-grb 357585] GCN/SWIFT_BAT_POSITION

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 25 Feb 18 20:32:09 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     811686,   Seg_Num: 0
GRB_RA:          185.609d {+12h 22m 26s} (J2000),
                 185.836d {+12h 23m 21s} (current),
                 184.983d {+12h 19m 56s} (1950)
GRB_DEC:         +29.293d {+29d 17' 34"} (J2000),
                 +29.192d {+29d 11' 32"} (current),
                 +29.570d {+29d 34' 12"} (1950)
GRB_ERROR:       4.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=984 [image_cnts]
TRIGGER_DUR:     64.000 [sec] 
TRIGGER_INDEX:   20000     E_range: 15-50 keV
BKG_INTEN:       0 [cnts]
BKG_TIME:        0.00 SOD {00:00:00.00} UT
BKG_DUR:         0 [sec]
GRB_DATE:        18174 TJD;    56 DOY;   18/02/25
GRB_TIME:        73851.46 SOD {20:30:51.46} UT
GRB_PHI:          11.97 [deg]
GRB_THETA:        31.47 [deg]
SOLN_STATUS:     0x1099D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    6.20 [sigma]
MERIT_PARAMS:     +0  +0 +125  +6  +1  -4  +0  +0 +84  +1 
SUN_POSTN:       338.90d {+22h 35m 36s}   -8.87d {-08d 52' 11"}
SUN_DIST:        147.58 [deg]   Sun_angle= 10.2 [hr] (West of Sun)
MOON_POSTN:      101.36d {+06h 45m 26s}  +20.19d {+20d 11' 18"}
MOON_DIST:        75.69 [deg]
MOON_ILLUM:      78 [%]
GAL_COORDS:      192.53, 83.26 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      172.36, 28.87 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This is an image trigger.  (The RATE_SIGNIF & BKG_{INTEN, TIME, DUR} are undefined.)  
COMMENTS:        A point_source was found.  
COMMENTS:        This is a low-flux event whose position matches one of the nearby galaxy sources in the on-board catalog!  
COMMENTS:        This matches a source in the on-board catalog: Num=12182=NGC4310,   delta=0.084 [deg].  
COMMENTS:        This matches a source in the ground catalog: NGC4310,   delta=0.084 [deg].  
COMMENTS:        Galaxy NGC4310 (of total mag=13.00 and dia=2.60 arcmin) is inside the position error circle.  
COMMENTS:        There is a 0.09% probability that an NGC galaxy would happen by chance coincidence.  
COMMENTS:        This is a GRB in nearby galaxy or it is noise.  
COMMENTS:        This trigger occurred at longitude,latitude = 67.31,3.88 [deg].