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GW231230_170116 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW231230_170116

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW231230_170116

Both component-mass lower bounds exceed 3 solar masses

Primary mass53 M☉

Secondary mass35 M☉

ObservedDec 30, 2023

Event identity

Classification and release

ID: gwtc:GW231230_170116
Event name: GW231230_170116
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: Saturday, December 30, 2023 at 5:01:17 PM UTC UTC
GPS time: 1,387,990,895

Source-frame posterior

Component and remnant masses

Primary mass: 53 (-15, +53) M☉
Secondary mass: 35 (-14, +15) M☉
Remnant mass: 86 (-19, +51) M☉
Effective spin: -0.18
Network SNR: 8.2

Propagation

Distance and statistical context

Luminosity distance: 5,700 (-3,200, +4,800) Mpc
Redshift: 0.87
Astrophysical probability: 0.96
False-alarm rate: 0.42

Provenance

Official source record

GWOSC · GWTC-4.1

GW231230_170116

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

JSON record GWOSC event page