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GW231005_021030 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW231005_021030

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW231005_021030

Both component-mass lower bounds exceed 3 solar masses

Primary mass84 M☉

Secondary mass50 M☉

ObservedOct 5, 2023

Event identity

Classification and release

ID: gwtc:GW231005_021030
Event name: GW231005_021030
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: Thursday, October 5, 2023 at 2:10:31 AM UTC UTC
GPS time: 1,380,507,049

Source-frame posterior

Component and remnant masses

Primary mass: 84 (-23, +29) M☉
Secondary mass: 50 (-20, +22) M☉
Remnant mass: 127 (-25, +36) M☉
Effective spin: 0.1
Network SNR: 10.4

Propagation

Distance and statistical context

Luminosity distance: 6,300 (-3,200, +4,600) Mpc
Redshift: 0.93
Astrophysical probability: 0.99
False-alarm rate: 0.01

Provenance

Official source record

GWOSC · GWTC-4.1

GW231005_021030

Last synchronized 9/12/2026, 1:40:20 AM UTC.

JSON record GWOSC event page