TDRSS lightcurve for Trigger=868853

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 04:00:18 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     868853,   Seg_Num: 0
GRB_RA:          307.800d {+20h 31m 12s} (J2000),
                 307.969d {+20h 31m 53s} (current),
                 307.348d {+20h 29m 24s} (1950)
GRB_DEC:         +40.671d {+40d 40' 17"} (J2000),
                 +40.736d {+40d 44' 08"} (current),
                 +40.502d {+40d 30' 06"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=1090 [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:        14274.18 SOD {03:57:54.18} UT
GRB_PHI:         -148.50 [deg]
GRB_THETA:        26.19 [deg]
SOLN_STATUS:     0x413
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    7.04 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  -3  +0  +1 +23  +0 
SUN_POSTN:       210.49d {+14h 01m 57s}  -12.40d {-12d 24' 12"}
SUN_DIST:        103.68 [deg]   Sun_angle= -6.5 [hr] (East of Sun)
MOON_POSTN:       49.85d {+03h 19m 23s}  +13.43d {+13d 26' 02"}
MOON_DIST:        90.00 [deg]
MOON_ILLUM:      98 [%]
GAL_COORDS:       79.48,  0.72 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      327.99, 56.75 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This Notice was delayed by more than 60 sec past the end of the trigger integration interval;  
COMMENTS:        probably due to it occurring during a Malindi downlink session.  
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 = 244.80,19.64 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 26 Oct 18 04:17:48 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     868853,   Seg_Num: 0
GRB_RA:          307.800d {+20h 31m 12s} (J2000),
                 307.969d {+20h 31m 53s} (current),
                 307.348d {+20h 29m 24s} (1950)
GRB_DEC:         +40.671d {+40d 40' 17"} (J2000),
                 +40.736d {+40d 44' 08"} (current),
                 +40.502d {+40d 30' 06"} (1950)
GRB_DATE:        18417 TJD;   299 DOY;   18/10/26
GRB_TIME:        14274.18 SOD {03:57:54.18} UT
TRIGGER_INDEX:   20000
GRB_PHI:         -148.50 [deg]
GRB_THETA:        26.19 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x413
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    7.04 [sigma]
LC_URL:          sw00868853000msb.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 00:18:23 EDT 2018