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GW230922_020344 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW230922_020344

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW230922_020344

Both component-mass lower bounds exceed 3 solar masses

Primary mass39.3 M☉

Secondary mass29.2 M☉

ObservedSep 22, 2023

Event identity

Classification and release

ID: gwtc:GW230922_020344
Event name: GW230922_020344
Classification: Binary Black Hole
Composition status: Confirmed
Confidence boundary: Both component-mass lower bounds exceed 3 solar masses
Catalog: GWTC-4.1
Preferred event version: v2
Observed at: Friday, September 22, 2023 at 2:03:44 AM UTC UTC
GPS time: 1,379,383,442.9

Source-frame posterior

Component and remnant masses

Primary mass: 39.3 (-6.4, +10.2) M☉
Secondary mass: 29.2 (-6.2, +5.6) M☉
Remnant mass: 65.4 (-6.2, +8.6) M☉
Effective spin: 0.03
Network SNR: 13.4

Propagation

Distance and statistical context

Luminosity distance: 1,640 (-740, +730) Mpc
Redshift: 0.31
Astrophysical probability: 0.99
False-alarm rate: 0

Provenance

Official source record

GWOSC · GWTC-4.1

GW230922_020344

Last synchronized 9/12/2026, 3:20:17 AM UTC.

JSON record GWOSC event page