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GRB 171209A

Measurement Value Units
Swift Trigger Time Dec. 9, 2017, 8:46 a.m. UT Modify
Swift Trigger Number 796100 None Modify
BAT RA (J2000) 139.387 deg Modify
BAT Dec (J2000) -30.523 deg Modify
BAT 90% Error Radius 1.2 arcmin Modify
BAT T90 161.7 sec Modify
BAT Fluence (15-150 keV) 75.0 10^-7 erg/cm^2 Modify
BAT Photon Index (15-150 keV) (PL = simple power-law) 1.58 None Modify
UVOT Time to First Observation 107.0 sec Modify
UVOT Magnitude V=17.3 None Modify
UVOT Other Filter Magnitudes B=18.2|U=16.5|UVW1>19.6|UVM2>20.2|UVW2>20.1|White=17.4 None Modify
Swift Burst Advocate Sam LaPorte None Modify
XRT RA (J2000) 139.402708333 deg Modify
XRT Dec (J2000) -30.5201666667 deg Modify
XRT 90% Error Radius 1.4 arcsec Modify
XRT Initial Temporal Index -1.408 None Modify
XRT Spectral Index (Gamma) 2.06813 None Modify
XRT Column Density (NH) 2.11048 10^21 cm^-2 Modify
UVOT RA (J2000) 139.402916667 deg Modify
UVOT Dec (J2000) -30.52 deg Modify
BAT 1-sec Peak Photon Flux (15-150 keV) 1.6 ph/cm^2/sec Modify
XRT 11 Hour Flux (0.3-10 keV) 0.042585444 10^-11 erg/cm^2/s Modify
XRT 24 Hour Flux (0.3-10 keV) 0.0047334892 10^-11 erg/cm^2/s Modify
Other Observatory Detections LCO (1m), Lulin (1m) None Modify

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