[vsnet-grb 493979] GCN/SWIFT_FOM_OBSERVE

Bacodine vxw at capella2.gsfc.nasa.gov
Sun Aug 1 07:23:17 JST 2021


TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 31 Jul 21 22:23:02 UT
NOTICE_TYPE:     Swift-FOM Will_Observe
TRIGGER_NUM:     1062336,   Seg_Num: 0
GRB_RA:          300.314d {+20h 01m 15s} (J2000),
                 300.645d {+20h 02m 35s} (current),
                 299.544d {+19h 58m 11s} (1950)
GRB_DEC:         -28.042d {-28d 02' 30"} (J2000),
                 -27.981d {-27d 58' 51"} (current),
                 -28.181d {-28d 10' 50"} (1950)
GRB_DATE:        19426 TJD;   212 DOY;   21/07/31
GRB_TIME:        80468.53 SOD {22:21:08.53} UT
TRIGGER_INDEX:   20000
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    9.45 [sigma]
FLAGS:           0x3
MERIT:           100.00
SUN_POSTN:       131.35d {+08h 45m 25s}  +18.02d {+18d 01' 29"}
SUN_DIST:        166.01 [deg]   Sun_angle= -11.3 [hr] (East of Sun)
MOON_POSTN:       41.40d {+02h 45m 36s}  +13.64d {+13d 38' 32"}
MOON_DIST:       105.71 [deg]
MOON_ILLUM:      46 [%]
GAL_COORDS:       13.46,-26.74 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      296.69, -7.37 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT Figure-of-Merit decision.  
COMMENTS:        This was of sufficient merit to become the new Automated Target;  
COMMENTS:        but if the Current PPT has a greater merit, then we will not request a slew.  
COMMENTS:        FOM will request the s/c to slew.  
COMMENTS:        The S/C has yet to make its decision about safe to slew or not.  
COMMENTS:        This does not match any source in the ground catalog.  
COMMENTS:           
COMMENTS:        The next comments were copied from the BAT_POS Notice:  
COMMENTS:        This is an image trigger.  (The RATE_SIGNIF is undefined.)  
COMMENTS:        A point_source was found.  
COMMENTS:        This does not match any source in the on-board catalog.  
COMMENTS:        This is a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 288.34,1.37 [deg].  



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