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GCN Circular 26677

GRB 200109A: Fermi GBM Final Real-time Localization
2020-01-09T01:56:09Z (4 years ago)
Fermi GBM Team at MSFC/Fermi-GBM <>
The Fermi GBM team reports the detection of a likely LONG GRB

At 01:45:51 UT on 9 Jan 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 200109A (trigger 600227156.894404 / 200109074).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 284.7, Dec = 68.9 (J2000 degrees, equivalent to J2000 18h 58m, 68d 54'), with a statistical uncertainty of 10.4 degrees.

The angle from the Fermi LAT boresight is 40.0 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:
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