Skip to main content
Introducing Einstein Probe, Astro Flavored Markdown, and Notices Schema v4.0.0. See news and announcements

GCN Circular 35576

GRB 240118C: Fermi GBM Final Localization
2024-01-19T14:09:25Z (5 months ago)
Web form
V. Sharma (NASA-GSFC/UMBC) and R. Hamburg (CNRS/IN2P3) report on behalf of the Fermi Gamma-ray Burst Monitor Team:

At 17:23:23.93 UT on 18 January 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240118C (trigger 727291408/240118725).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 305.33, Dec = -12.39 (J2000 degrees, equivalent to J2000 20h 21m, 12d 23'), with a statistical uncertainty of 1.8 degrees.

The angle from the Fermi LAT boresight is 90.00 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