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GW230904_051013 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW230904_051013

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW230904_051013

Both component-mass lower bounds exceed 3 solar masses

Primary mass10.6 M☉

Secondary mass7.1 M☉

ObservedSep 4, 2023

Event identity

Classification and release

ID: gwtc:GW230904_051013
Event name: GW230904_051013
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, September 4, 2023 at 5:10:13 AM UTC UTC
GPS time: 1,377,839,431.1

Source-frame posterior

Component and remnant masses

Primary mass: 10.6 (-1.9, +4.2) M☉
Secondary mass: 7.1 (-1.9, +1.5) M☉
Remnant mass: 17.1 (-1.6, +2.5) M☉
Effective spin: 0.05
Network SNR: 10.5

Propagation

Distance and statistical context

Luminosity distance: 1,030 (-440, +590) Mpc
Redshift: 0.2
Astrophysical probability: 0.99
False-alarm rate: 0

Provenance

Official source record

GWOSC · GWTC-4.1

GW230904_051013

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

JSON record GWOSC event page