{"name":"GW231220_173406","grace_id":"S231220ay","run":"O4a","gcn_notice":"https://gcn.gsfc.nasa.gov/notices_l/S231220ay.lvc","gcn_circular":"https://gcn.nasa.gov/circulars?query=S231220ay","aliases":["GW231220_173406"],"versions":[{"version":1,"catalog":"GWTC-4.0","detail_url":"https://gwosc.org/api/v2/event-versions/GW231220_173406-v1?format=json"}]}