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GW230824_033047 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW230824_033047

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW230824_033047

Both component-mass lower bounds exceed 3 solar masses

Primary mass53 M☉

Secondary mass36 M☉

ObservedAug 24, 2023

Event identity

Classification and release

ID: gwtc:GW230824_033047
Event name: GW230824_033047
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: Thursday, August 24, 2023 at 3:30:47 AM UTC UTC
GPS time: 1,376,883,065.7

Source-frame posterior

Component and remnant masses

Primary mass: 53 (-11, +16) M☉
Secondary mass: 36 (-13, +13) M☉
Remnant mass: 84 (-13, +19) M☉
Effective spin: -0.01
Network SNR: 11.1

Propagation

Distance and statistical context

Luminosity distance: 4,700 (-2,300, +2,900) Mpc
Redshift: 0.74
Astrophysical probability: 0.99
False-alarm rate: 0

Provenance

Official source record

GWOSC · GWTC-4.1

GW230824_033047

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

JSON record GWOSC event page