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GCN Circular 31211

Subject
GRB 211212A: Fermi GBM Final Real-time Localization
Date
2021-12-12T09:38:28Z (2 years ago)
From
Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>
The Fermi GBM team reports the detection of a likely LONG GRB

At 09:28:03 UT on 12 Dec 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 211212A (trigger 660994088.510652 / 211212394).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 144.4, Dec = -2.3 (J2000 degrees, equivalent to J2000 09h 37m, -2d 17'), with a statistical uncertainty of 4.8 degrees.

The angle from the Fermi LAT boresight is 114.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn211212394/quicklook/glg_skymap_all_bn211212394.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn211212394/quicklook/glg_healpix_all_bn211212394.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn211212394/quicklook/glg_lc_medres34_bn211212394.gif
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