TITLE:   GCN CIRCULAR
NUMBER:  33130
SUBJECT: GRB 230101A: Fermi GBM Final Real-time Localization
DATE:    23/01/01 02:26:46 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 02:16:38 UT on 1 Jan 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230101A (trigger 694232203.998664 / 230101095).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 206.3, Dec = -21.9 (J2000 degrees, equivalent to J2000 13h 45m, -21d 53'), with a statistical uncertainty of 2.8 degrees.

The angle from the Fermi LAT boresight is 49.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230101095/quicklook/glg_skymap_all_bn230101095.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230101095/quicklook/glg_healpix_all_bn230101095.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230101095/quicklook/glg_lc_medres34_bn230101095.gif