{"name":"GW231231_120147","grace_id":"S231231af","run":"O4a","gcn_notice":"https://gcn.gsfc.nasa.gov/notices_l/S231231af.lvc","gcn_circular":"https://gcn.nasa.gov/circulars?query=S231231af","aliases":["GW231231_120147"],"versions":[{"version":1,"catalog":"GWTC-4.0","detail_url":"https://gwosc.org/api/v2/event-versions/GW231231_120147-v1?format=json"}]}