Skip to main content
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