TDRSS lightcurve for Trigger=868839

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 01:43:01 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     868839,   Seg_Num: 0
GRB_RA:          244.815d {+16h 19m 16s} (J2000),
                 245.083d {+16h 20m 20s} (current),
                 244.104d {+16h 16m 25s} (1950)
GRB_DEC:         -15.782d {-15d 46' 56"} (J2000),
                 -15.827d {-15d 49' 35"} (current),
                 -15.662d {-15d 39' 44"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=3284 [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:        6106.18 SOD {01:41:46.18} UT
GRB_PHI:         -61.66 [deg]
GRB_THETA:        28.39 [deg]
SOLN_STATUS:     0x10000513
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    17.99 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  +5 -100  +0 -83  +0 
SUN_POSTN:       210.40d {+14h 01m 35s}  -12.37d {-12d 22' 15"}
SUN_DIST:         33.78 [deg]   Sun_angle= -2.3 [hr] (East of Sun)
MOON_POSTN:       48.57d {+03h 14m 17s}  +13.06d {+13d 03' 46"}
MOON_DIST:       163.78 [deg]
MOON_ILLUM:      98 [%]
GAL_COORDS:      358.86, 23.81 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      245.71,  5.56 [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 matches a source in the ground catalog: Sco_X-1,   delta=0.213 [deg].  
COMMENTS:        This is not a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 127.10,-20.10 [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 01:59:06 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     868839,   Seg_Num: 0
GRB_RA:          244.815d {+16h 19m 16s} (J2000),
                 245.083d {+16h 20m 20s} (current),
                 244.104d {+16h 16m 25s} (1950)
GRB_DEC:         -15.782d {-15d 46' 56"} (J2000),
                 -15.827d {-15d 49' 35"} (current),
                 -15.662d {-15d 39' 44"} (1950)
GRB_DATE:        18417 TJD;   299 DOY;   18/10/26
GRB_TIME:        6106.18 SOD {01:41:46.18} UT
TRIGGER_INDEX:   20000
GRB_PHI:         -61.66 [deg]
GRB_THETA:        28.39 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x513
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    17.99 [sigma]
LC_URL:          sw00868839000msb.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 Oct 25 21:59:22 EDT 2018