TDRSS lightcurve for Trigger=878504

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 22 Dec 18 21:43:25 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     878504,   Seg_Num: 0
GRB_RA:          131.375d {+08h 45m 30s} (J2000),
                 131.611d {+08h 46m 27s} (current),
                 130.755d {+08h 43m 01s} (1950)
GRB_DEC:          -5.488d {-05d 29' 15"} (J2000),
                  -5.558d {-05d 33' 27"} (current),
                  -5.305d {-05d 18' 17"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=1187 [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:        18474 TJD;   356 DOY;   18/12/22
GRB_TIME:        78129.87 SOD {21:42:09.87} UT
GRB_PHI:         -166.25 [deg]
GRB_THETA:        23.25 [deg]
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    7.10 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  -3  +0  +0 +65  +0 
SUN_POSTN:       271.08d {+18h 04m 20s}  -23.43d {-23d 25' 56"}
SUN_DIST:        130.97 [deg]   Sun_angle= 9.3 [hr] (West of Sun)
MOON_POSTN:       93.29d {+06h 13m 09s}  +21.25d {+21d 14' 52"}
MOON_DIST:        46.16 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      231.97, 22.29 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      135.47,-22.64 [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 does not match any source in the on-board catalog.  
COMMENTS:        This does not match any source in the ground catalog.  
COMMENTS:        This is a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 82.17,-20.29 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 22 Dec 18 21:59:14 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     878504,   Seg_Num: 0
GRB_RA:          131.375d {+08h 45m 30s} (J2000),
                 131.611d {+08h 46m 27s} (current),
                 130.755d {+08h 43m 01s} (1950)
GRB_DEC:          -5.488d {-05d 29' 15"} (J2000),
                  -5.558d {-05d 33' 27"} (current),
                  -5.305d {-05d 18' 17"} (1950)
GRB_DATE:        18474 TJD;   356 DOY;   18/12/22
GRB_TIME:        78129.87 SOD {21:42:09.87} UT
TRIGGER_INDEX:   20000
GRB_PHI:         -166.25 [deg]
GRB_THETA:        23.25 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    7.10 [sigma]
LC_URL:          sw00878504000msb.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:
Sat Dec 22 16:59:43 EST 2018