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GCN Circular 29078

Subject
GRB 201217A: Fermi GBM Final Localization
Date
2020-12-17T22:35:27Z (3 years ago)
From
Joshua Wood at MSFC/Fermi-GBM <joshua.r.wood@nasa.gov>
The Fermi GBM team reports the detection of a likely LONG GRB

At 02:35:03.51 UT on 17 Dec 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 201217A (trigger 629865308 / 201217108).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 273.3, Dec = -65.1 (J2000 degrees, equivalent to J2000 18h 13m, -65d 05'), with a statistical uncertainty of 3.2 degrees.

The angle from the Fermi LAT boresight is 82.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn201217108/quicklook/glg_skymap_all_bn201217108.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn201217108/quicklook/glg_healpix_all_bn201217108.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn201217108/quicklook/glg_lc_medres34_bn201217108.gif
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