TITLE:   GCN CIRCULAR
NUMBER:  31530
SUBJECT: GRB 220129A: Fermi GBM Final Real-time Localization
DATE:    22/01/29 21:07:55 GMT
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 20:57:30 UT on 29 Jan 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220129A (trigger 665182655.40502 / 220129873).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 244.4, Dec = 2.9 (J2000 degrees, equivalent to J2000 16h 17m, 2d 53'), with a statistical uncertainty of 22.5 degrees.

The angle from the Fermi LAT boresight is 16.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220129873/quicklook/glg_skymap_all_bn220129873.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/bn220129873/quicklook/glg_healpix_all_bn220129873.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220129873/quicklook/glg_lc_medres34_bn220129873.gif