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GW230814_230901 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW230814_230901

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW230814_230901

Both component-mass lower bounds exceed 3 solar masses

Primary mass33.7 M☉

Secondary mass28.2 M☉

ObservedAug 14, 2023

Event identity

Classification and release

ID: gwtc:GW230814_230901
Event name: GW230814_230901
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: v3
Observed at: Monday, August 14, 2023 at 11:09:01 PM UTC UTC
GPS time: 1,376,089,759.8

Source-frame posterior

Component and remnant masses

Primary mass: 33.7 (-2.2, +2.9) M☉
Secondary mass: 28.2 (-3.1, +2.2) M☉
Remnant mass: 59 (-1.9, +1.9) M☉
Effective spin: -0.01
Network SNR: 43

Propagation

Distance and statistical context

Luminosity distance: 290 (-130, +180) Mpc
Redshift: 0.06
Astrophysical probability: 0.99
False-alarm rate: 0

Provenance

Official source record

GWOSC · GWTC-4.1

GW230814_230901

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

JSON record GWOSC event page