TDRSS lightcurve for Trigger=809217

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 08 Feb 18 23:04:38 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     809217,   Seg_Num: 0
GRB_RA:           20.786d {+01h 23m 09s} (J2000),
                  21.023d {+01h 24m 06s} (current),
                  20.133d {+01h 20m 32s} (1950)
GRB_DEC:          +7.444d {+07d 26' 38"} (J2000),
                  +7.538d {+07d 32' 17"} (current),
                  +7.183d {+07d 10' 59"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=2964 [image_cnts]
TRIGGER_DUR:     320.000 [sec]   (=5.3 [min])
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:        18157 TJD;    39 DOY;   18/02/08
GRB_TIME:        82739.55 SOD {22:58:59.55} UT
GRB_PHI:          51.20 [deg]
GRB_THETA:        18.39 [deg]
SOLN_STATUS:     0x1019D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    6.46 [sigma]
MERIT_PARAMS:     +0  +0 +123  +6  +1  -4  +0  +0 -47  +1 
SUN_POSTN:       322.55d {+21h 30m 11s}  -14.77d {-14d 46' 05"}
SUN_DIST:         62.11 [deg]   Sun_angle= -3.9 [hr] (East of Sun)
MOON_POSTN:      243.58d {+16h 14m 20s}  -16.11d {-16d 06' 46"}
MOON_DIST:       137.55 [deg]
MOON_ILLUM:      38 [%]
GAL_COORDS:      136.58,-54.59 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       21.99, -1.21 [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=11008=HD 8357,   delta=0.055 [deg].  
COMMENTS:        This matches a source in the ground catalog: HD 8357,   delta=0.055 [deg].  
COMMENTS:        This is a GRB in nearby galaxy or it is noise.  
COMMENTS:        This trigger occurred at longitude,latitude = 280.96,16.55 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 08 Feb 18 23:16:01 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     809217,   Seg_Num: 0
GRB_RA:           20.786d {+01h 23m 09s} (J2000),
                  21.023d {+01h 24m 06s} (current),
                  20.133d {+01h 20m 32s} (1950)
GRB_DEC:          +7.444d {+07d 26' 38"} (J2000),
                  +7.538d {+07d 32' 17"} (current),
                  +7.183d {+07d 10' 59"} (1950)
GRB_DATE:        18157 TJD;    39 DOY;   18/02/08
GRB_TIME:        82739.55 SOD {22:58:59.55} UT
TRIGGER_INDEX:   20000
GRB_PHI:          51.20 [deg]
GRB_THETA:        18.39 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     320.000 [sec]   (=5.3 [min])
SOLN_STATUS:     0x19D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    6.46 [sigma]
LC_URL:          sw00809217000msb.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:
Thu Feb  8 18:16:24 EST 2018