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GCN Circular 31561

Subject
GRB 220209A: Fermi GBM Final Real-time Localization
Date
2022-02-09T23:11:06Z (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 23:00:50 UT on 9 Feb 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220209A (trigger 666140455.423452 / 220209959).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 352.3, Dec = 72.0 (J2000 degrees, equivalent to J2000 23h 29m, 72d 00'), with a statistical uncertainty of 1.0 degrees.

The angle from the Fermi LAT boresight is 62.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220209959/quicklook/glg_skymap_all_bn220209959.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220209959/quicklook/glg_healpix_all_bn220209959.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220209959/quicklook/glg_lc_medres34_bn220209959.gif
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