TDRSS lightcurve for Trigger=668877

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 30 Dec 15 22:27:16 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     668877,   Seg_Num: 0
GRB_RA:          305.945d {+20h 23m 47s} (J2000),
                 306.102d {+20h 24m 24s} (current),
                 305.456d {+20h 21m 49s} (1950)
GRB_DEC:         +33.850d {+33d 50' 59"} (J2000),
                 +33.902d {+33d 54' 07"} (current),
                 +33.687d {+33d 41' 14"} (1950)
GRB_ERROR:       4.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=1008 [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:        17386 TJD;   364 DOY;   15/12/30
GRB_TIME:        80760.37 SOD {22:26:00.37} UT
GRB_PHI:         116.85 [deg]
GRB_THETA:        14.36 [deg]
SOLN_STATUS:     0x99D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    6.06 [sigma]
MERIT_PARAMS:     +0  +0 +113  +6  +1  -4  +0  +1 -46  +1 
SUN_POSTN:       279.68d {+18h 38m 44s}  -23.14d {-23d 08' 16"}
SUN_DIST:         62.33 [deg]   Sun_angle= -1.8 [hr] (East of Sun)
MOON_POSTN:      164.89d {+10h 59m 34s}   +5.45d {+05d 26' 60"}
MOON_DIST:       126.23 [deg]
MOON_ILLUM:      71 [%]
GAL_COORDS:       73.07, -2.05 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      320.96, 51.12 [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=10763=(null) (probably an AT_Slot).  
COMMENTS:        This matches a source in the ground catalog: V_404_Cyg,   delta=0.061 [deg].  
COMMENTS:        This is not a GRB.  
COMMENTS:           
COMMENTS:        The IMAGE_SIGNIF is VERY LOW, this is very likely not real.  
COMMENTS:        This trigger occurred at longitude,latitude = 216.25,8.98 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 30 Dec 15 22:57:08 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     668877,   Seg_Num: 0
GRB_RA:          305.945d {+20h 23m 47s} (J2000),
                 306.102d {+20h 24m 24s} (current),
                 305.456d {+20h 21m 49s} (1950)
GRB_DEC:         +33.850d {+33d 50' 59"} (J2000),
                 +33.902d {+33d 54' 07"} (current),
                 +33.687d {+33d 41' 14"} (1950)
GRB_DATE:        17386 TJD;   364 DOY;   15/12/30
GRB_TIME:        80760.37 SOD {22:26:00.37} UT
TRIGGER_INDEX:   20000
GRB_PHI:         116.85 [deg]
GRB_THETA:        14.36 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x99D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    6.06 [sigma]
LC_URL:          sw00668877000msb.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:
Wed Dec 30 17:57:22 EST 2015