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GW231113_122623 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW231113_122623

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW231113_122623

Both component-mass lower bounds exceed 3 solar masses

Primary mass39.8 M☉

Secondary mass26.4 M☉

ObservedNov 13, 2023

Event identity

Classification and release

ID: gwtc:GW231113_122623
Event name: GW231113_122623
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: Monday, November 13, 2023 at 12:26:23 PM UTC UTC
GPS time: 1,383,913,601.9

Source-frame posterior

Component and remnant masses

Primary mass: 39.8 (-9.6, +17.2) M☉
Secondary mass: 26.4 (-9.5, +8.9) M☉
Remnant mass: 63 (-12, +15) M☉
Effective spin: 0.33
Network SNR: 8.6

Propagation

Distance and statistical context

Luminosity distance: 3,400 (-1,700, +2,400) Mpc
Redshift: 0.56
Astrophysical probability: 0.99
False-alarm rate: 0.063

Provenance

Official source record

GWOSC · GWTC-4.1

GW231113_122623

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

JSON record GWOSC event page