TDRSS lightcurve for Trigger=868849

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 26 Oct 18 03:32:53 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     868849,   Seg_Num: 0
GRB_RA:          244.793d {+16h 19m 10s} (J2000),
                 245.062d {+16h 20m 15s} (current),
                 244.081d {+16h 16m 19s} (1950)
GRB_DEC:         -16.000d {-16d 00' 00"} (J2000),
                 -16.045d {-16d 02' 40"} (current),
                 -15.880d {-15d 52' 48"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=5518 [image_cnts]
TRIGGER_DUR:     88.000 [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:        18417 TJD;   299 DOY;   18/10/26
GRB_TIME:        12674.18 SOD {03:31:14.18} UT
GRB_PHI:         -55.61 [deg]
GRB_THETA:        28.20 [deg]
SOLN_STATUS:     0x413
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    22.15 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  +7 -100  +0 -83  +0 
SUN_POSTN:       210.47d {+14h 01m 53s}  -12.40d {-12d 23' 49"}
SUN_DIST:         33.69 [deg]   Sun_angle= -2.3 [hr] (East of Sun)
MOON_POSTN:       49.59d {+03h 18m 22s}  +13.36d {+13d 21' 37"}
MOON_DIST:       164.80 [deg]
MOON_ILLUM:      98 [%]
GAL_COORDS:      358.67, 23.69 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      245.72,  5.34 [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 = 154.69,-8.45 [deg].  
COMMENTS:           
COMMENTS:        This trigger occured while the StarTracker had lost lock, so it is possibly bogus.  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 26 Oct 18 03:40:59 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     868849,   Seg_Num: 0
GRB_RA:          244.793d {+16h 19m 10s} (J2000),
                 245.062d {+16h 20m 15s} (current),
                 244.081d {+16h 16m 19s} (1950)
GRB_DEC:         -16.000d {-16d 00' 00"} (J2000),
                 -16.045d {-16d 02' 40"} (current),
                 -15.880d {-15d 52' 48"} (1950)
GRB_DATE:        18417 TJD;   299 DOY;   18/10/26
GRB_TIME:        12674.18 SOD {03:31:14.18} UT
TRIGGER_INDEX:   20000
GRB_PHI:         -55.61 [deg]
GRB_THETA:        28.20 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     88.000 [sec] 
SOLN_STATUS:     0x413
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    22.15 [sigma]
LC_URL:          sw00868849000msb.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

Plot creation:
Thu Oct 25 23:41:24 EDT 2018