Last updated using ObsID 00156838000, version 31;
The BAT spectrum was fitted with a cut-off power-law. The cutoff energy was 29.4 keV and was not allowed to evolve. See caveats for details.
All data uses absorption NH=0.974 × 1022 cm-2 at z=0.
(Source: the late-time spectrum from the XRT spectrum repository).