TDRSS lightcurve for Trigger=868851

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 03:51:35 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     868851,   Seg_Num: 0
GRB_RA:          244.795d {+16h 19m 11s} (J2000),
                 245.063d {+16h 20m 15s} (current),
                 244.082d {+16h 16m 20s} (1950)
GRB_DEC:         -16.064d {-16d 03' 48"} (J2000),
                 -16.108d {-16d 06' 28"} (current),
                 -15.943d {-15d 56' 35"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=11703 [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:        18417 TJD;   299 DOY;   18/10/26
GRB_TIME:        13818.18 SOD {03:50:18.18} UT
GRB_PHI:         -46.67 [deg]
GRB_THETA:        24.17 [deg]
SOLN_STATUS:     0x1000041D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    26.21 [sigma]
MERIT_PARAMS:     +0  +0 +100  +6  +1  +9 -100  +0 -83  +0 
SUN_POSTN:       210.48d {+14h 01m 56s}  -12.40d {-12d 24' 05"}
SUN_DIST:         33.68 [deg]   Sun_angle= -2.3 [hr] (East of Sun)
MOON_POSTN:       49.76d {+03h 19m 04s}  +13.41d {+13d 24' 38"}
MOON_DIST:       164.97 [deg]
MOON_ILLUM:      98 [%]
GAL_COORDS:      358.62, 23.65 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      245.73,  5.28 [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 matches a source in the on-board catalog: Num=28849=(null) (probably an AT_Slot).  
COMMENTS:        This does not match any source in the ground catalog.  
COMMENTS:        This is not a GRB.  
COMMENTS:        This is an interesting source.  
COMMENTS:        This trigger occurred at longitude,latitude = 216.66,14.31 [deg].  
COMMENTS:           

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 26 Oct 18 04:00:08 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     868851,   Seg_Num: 0
GRB_RA:          244.795d {+16h 19m 11s} (J2000),
                 245.063d {+16h 20m 15s} (current),
                 244.082d {+16h 16m 20s} (1950)
GRB_DEC:         -16.064d {-16d 03' 48"} (J2000),
                 -16.108d {-16d 06' 28"} (current),
                 -15.943d {-15d 56' 35"} (1950)
GRB_DATE:        18417 TJD;   299 DOY;   18/10/26
GRB_TIME:        13818.18 SOD {03:50:18.18} UT
TRIGGER_INDEX:   20000
GRB_PHI:         -46.67 [deg]
GRB_THETA:        24.17 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x41D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    26.21 [sigma]
LC_URL:          sw00868851000msb.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:
Fri Oct 26 00:00:23 EDT 2018