TDRSS lightcurve for Trigger=866993

Notes:

• 1) None of the TDRSS light curves are background subtracted.

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 14 Oct 18 08:15:46 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     866993,   Seg_Num: 0
GRB_RA:          272.166d {+18h 08m 40s} (J2000),
                 272.445d {+18h 09m 47s} (current),
                 271.422d {+18h 05m 41s} (1950)
GRB_DEC:         -20.380d {-20d 22' 48"} (J2000),
                 -20.376d {-20d 22' 33"} (current),
                 -20.389d {-20d 23' 19"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       324 [cnts]    Image_Peak=41 [image_cnts]
TRIGGER_DUR:     0.064 [sec] 
TRIGGER_INDEX:   10411     E_range: 15-50 keV
BKG_INTEN:       17906 [cnts]
BKG_TIME:        29722.24 SOD {08:15:22.24} UT
BKG_DUR:         8 [sec]
GRB_DATE:        18405 TJD;   287 DOY;   18/10/14
GRB_TIME:        29734.72 SOD {08:15:34.72} UT
GRB_PHI:         -60.70 [deg]
GRB_THETA:        36.60 [deg]
SOLN_STATUS:     0x18D
RATE_SIGNIF:     18.38 [sigma]
IMAGE_SIGNIF:    6.92 [sigma]
MERIT_PARAMS:     +0  +0  +2  -4  +1  -3  -5  +1 -32  +0 
SUN_POSTN:       199.35d {+13h 17m 23s}   -8.17d {-08d 10' 16"}
SUN_DIST:         71.38 [deg]   Sun_angle= -4.9 [hr] (East of Sun)
MOON_POSTN:      264.15d {+17h 36m 37s}  -20.26d {-20d 15' 48"}
MOON_DIST:         7.78 [deg]
MOON_ILLUM:      28 [%]
GAL_COORDS:       10.02, -0.23 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      272.03,  3.04 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This is a rate trigger.  
COMMENTS:        A point_source was found.  
COMMENTS:        This matches a source in the on-board catalog: Num=10201=SGR1806-20,   delta=0.031 [deg].  
COMMENTS:        This matches a source in the ground catalog: SGR1806-20,   delta=0.031 [deg].  
COMMENTS:        This is not a GRB.  
COMMENTS:        This is an interesting source.  
COMMENTS:        Since the IMAGE_SIGNIF is less than 7 sigma, this is a questionable detection.  
COMMENTS:        This trigger occurred at longitude,latitude = 189.69,-4.56 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 14 Oct 18 08:32:50 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     866993,   Seg_Num: 0
GRB_RA:          272.166d {+18h 08m 40s} (J2000),
                 272.445d {+18h 09m 47s} (current),
                 271.422d {+18h 05m 41s} (1950)
GRB_DEC:         -20.380d {-20d 22' 48"} (J2000),
                 -20.376d {-20d 22' 33"} (current),
                 -20.389d {-20d 23' 19"} (1950)
GRB_DATE:        18405 TJD;   287 DOY;   18/10/14
GRB_TIME:        29734.91 SOD {08:15:34.91} UT
TRIGGER_INDEX:   10411
GRB_PHI:         -60.70 [deg]
GRB_THETA:        36.60 [deg]
DELTA_TIME:      13.00 [sec]
TRIGGER_DUR:     0.064 [sec] 
SOLN_STATUS:     0x18D
RATE_SIGNIF:     18.38 [sigma]
IMAGE_SIGNIF:    6.92 [sigma]
LC_URL:          sw00866993000msb.lc

Initial TDRSS lightcurve and spacecraft attitude plot

TDRSS lightcurve from T0-30 to T0+50 (zoom in)

TDRSS light curve from T0-1 to T0+2 (More zoom in)

1.6s binned TDRSS light curve

Extended TDRSS light curve and spacecraft attitude plot(s)

Extended TDRSS lc No.1

Extended TDRSS lc No.2

Extended TDRSS lc No.3

Extended TDRSS lc No.4

Plot creation:
Sun Oct 14 04:33:23 EDT 2018