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GW231206_233901 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW231206_233901

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW231206_233901

Both component-mass lower bounds exceed 3 solar masses

Primary mass37.6 M☉

Secondary mass28.5 M☉

ObservedDec 6, 2023

Event identity

Classification and release

ID: gwtc:GW231206_233901
Event name: GW231206_233901
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: Wednesday, December 6, 2023 at 11:39:01 PM UTC UTC
GPS time: 1,385,941,159.5

Source-frame posterior

Component and remnant masses

Primary mass: 37.6 (-4.6, +6.6) M☉
Secondary mass: 28.5 (-6.1, +5.3) M☉
Remnant mass: 63.1 (-3.4, +4.9) M☉
Effective spin: -0.05
Network SNR: 21.9

Propagation

Distance and statistical context

Luminosity distance: 1,490 (-500, +340) Mpc
Redshift: 0.28
Astrophysical probability: 0.99
False-alarm rate: 0

Provenance

Official source record

GWOSC · GWTC-4.1

GW231206_233901

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

JSON record GWOSC event page