Last updated using ObsID 00311159000, version 11;
The BAT spectrum was fitted with a cut-off power-law. The cutoff energy was 493.0 keV and was not allowed to evolve. See caveats for details.
All data uses absorption NH=0.166 × 1022 cm-2 at z=0.
(Source: the late-time spectrum from the XRT spectrum repository).