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GW231213_111417 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW231213_111417

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW231213_111417

Both component-mass lower bounds exceed 3 solar masses

Primary mass35.6 M☉

Secondary mass27.2 M☉

ObservedDec 13, 2023

Event identity

Classification and release

ID: gwtc:GW231213_111417
Event name: GW231213_111417
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 13, 2023 at 11:14:17 AM UTC UTC
GPS time: 1,386,501,275.9

Source-frame posterior

Component and remnant masses

Primary mass: 35.6 (-6.8, +10.5) M☉
Secondary mass: 27.2 (-7.6, +7.9) M☉
Remnant mass: 59.6 (-8.9, +13.3) M☉
Effective spin: 0.06
Network SNR: 10.4

Propagation

Distance and statistical context

Luminosity distance: 4,000 (-2,000, +2,300) Mpc
Redshift: 0.65
Astrophysical probability: 0.99
False-alarm rate: 0

Provenance

Official source record

GWOSC · GWTC-4.1

GW231213_111417

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

JSON record GWOSC event page