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

GCN Circular 32233

GRB 220620B: Fermi GBM Final Real-time Localization
2022-06-20T06:26:49Z (2 years ago)
Fermi GBM Team at MSFC/Fermi-GBM <>
The Fermi GBM team reports the detection of a likely LONG GRB

At 06:16:25 UT on 20 Jun 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220620B (trigger 677398590.943632 / 220620261).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 326.9, Dec = -44.6 (J2000 degrees, equivalent to J2000 21h 47m, -44d 36'), with a statistical uncertainty of 8.9 degrees.

The angle from the Fermi LAT boresight is 68.0 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