Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 32209

GRB 220617A: Fermi GBM Final Real-time Localization
2022-06-17T18:41:43Z (2 years ago)
Fermi GBM Team at MSFC/Fermi-GBM <>
The Fermi GBM team reports the detection of a likely SHORT GRB

At 18:31:12 UT on 17 Jun 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220617A (trigger 677183477.902462 / 220617772).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 155.8, Dec = 21.2 (J2000 degrees, equivalent to J2000 10h 23m, 21d 11'), with a statistical uncertainty of 2.7 degrees.

The angle from the Fermi LAT boresight is 41.0 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