[vsnet-grb 493097] GCN/SWIFT_FOM_OBSERVE

Bacodine vxw at capella2.gsfc.nasa.gov
Sun Jul 25 21:01:47 JST 2021


TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 25 Jul 21 12:01:46 UT
NOTICE_TYPE:     Swift-FOM Will_Observe
TRIGGER_NUM:     1061554,   Seg_Num: 0
GRB_RA:          192.932d {+12h 51m 44s} (J2000),
                 193.200d {+12h 52m 48s} (current),
                 192.310d {+12h 49m 15s} (1950)
GRB_DEC:         +17.125d {+17d 07' 30"} (J2000),
                 +17.008d {+17d 00' 29"} (current),
                 +17.397d {+17d 23' 48"} (1950)
GRB_DATE:        19420 TJD;   206 DOY;   21/07/25
GRB_TIME:        43248.02 SOD {12:00:48.02} UT
TRIGGER_INDEX:   474
RATE_SIGNIF:     11.00 [sigma]
IMAGE_SIGNIF:    7.81 [sigma]
FLAGS:           0x3
MERIT:           100.00
SUN_POSTN:       125.06d {+08h 20m 14s}  +19.54d {+19d 32' 12"}
SUN_DIST:         64.32 [deg]   Sun_angle= -4.5 [hr] (East of Sun)
MOON_POSTN:      325.11d {+21h 40m 27s}  -19.04d {-19d 02' 35"}
MOON_DIST:       134.37 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      303.33, 80.00 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      184.85, 20.81 [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:        There is a bright star (mag=6.32) 7.49 arcmin from this position.  
COMMENTS:           
COMMENTS:        The next comments were copied from the BAT_POS Notice:  
COMMENTS:        This is a rate trigger.  
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 = 126.64,4.44 [deg].  



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