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GW230704_212616 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW230704_212616

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW230704_212616

Both component-mass lower bounds exceed 3 solar masses

Primary mass89 M☉

Secondary mass50 M☉

ObservedJul 4, 2023

Event identity

Classification and release

ID: gwtc:GW230704_212616
Event name: GW230704_212616
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: Tuesday, July 4, 2023 at 9:26:16 PM UTC UTC
GPS time: 1,372,541,194.7

Source-frame posterior

Component and remnant masses

Primary mass: 89 (-27, +40) M☉
Secondary mass: 50 (-25, +30) M☉
Remnant mass: 132 (-31, +47) M☉
Effective spin: 0.27
Network SNR: 8.7

Propagation

Distance and statistical context

Luminosity distance: 7,300 (-4,200, +6,200) Mpc
Redshift: 1.06
Astrophysical probability: 0.93
False-alarm rate: 0.51

Provenance

Official source record

GWOSC · GWTC-4.1

GW230704_212616

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

JSON record GWOSC event page