Skip to main content
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 32919

GRB 221108A: Fermi GBM Final Localization
2022-11-08T16:06:58Z (2 years ago)
Rachel Dunwoody at UCD <>
The Fermi GBM team reports the detection of a likely LONG GRB.

At 11:19:33.13 UT on 8 Nov 2022, the Fermi Gamma-ray Burst Monitor (GBM)
triggered and located GRB 221108A (trigger 689599178 / 221108472).

The on-ground calculated location, using the Fermi GBM trigger data, is RA
= 346.7, Dec = -54.7 (J2000 degrees, equivalent to J2000 23h 07m, -54d
42'), with a statistical uncertainty of 12.8 degrees.

The angle from the Fermi LAT boresight is 133 degrees.

The skymap can be found here:

The HEALPix FITS file, including the estimated localization systematic, can
be found here:

The GBM light curve can be found here:
Looking for U.S. government information and services? Visit