TITLE:   GCN CIRCULAR
NUMBER:  31806
SUBJECT: GRB 220330A: Fermi GBM Final Real-time Localization
DATE:    22/03/30 12:38:33 GMT
FROM:    Fermi GBM Team at MSFC/Fermi-GBM  <do_not_reply@GIOC.nsstc.nasa.gov>

The Fermi GBM team reports the detection of a likely SHORT GRB

At 12:28:09 UT on 30 Mar 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220330A (trigger 670336094.273364 / 220330520).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 324.1, Dec = 63.1 (J2000 degrees, equivalent to J2000 21h 36m, 63d 06'), with a statistical uncertainty of 3.8 degrees.

The angle from the Fermi LAT boresight is 28.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220330520/quicklook/glg_skymap_all_bn220330520.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220330520/quicklook/glg_healpix_all_bn220330520.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220330520/quicklook/glg_lc_medres34_bn220330520.gif