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GW240923_204006 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW240923_204006

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW240923_204006

Both component-mass lower bounds exceed 3 solar masses

Primary mass46.1 M☉

Secondary mass34.9 M☉

ObservedSep 23, 2024

Event identity

Classification and release

ID: gwtc:GW240923_204006
Event name: GW240923_204006
Classification: Binary Black Hole
Composition status: Confirmed
Confidence boundary: Both component-mass lower bounds exceed 3 solar masses
Catalog: GWTC-5.0
Preferred event version: v1
Observed at: Monday, September 23, 2024 at 8:40:06 PM UTC UTC
GPS time: 1,411,159,224.1

Source-frame posterior

Component and remnant masses

Primary mass: 46.1 (-7.9, +10.3) M☉
Secondary mass: 34.9 (-10.6, +9.9) M☉
Remnant mass: 76.3 (-9.1, +15.1) M☉
Effective spin: 0.01
Network SNR: 13.6

Propagation

Distance and statistical context

Luminosity distance: 4,000 (-1,900, +1,800) Mpc
Redshift: 0.65
Astrophysical probability: 0.99
False-alarm rate: 0

Provenance

Official source record

GWOSC · GWTC-5.0

GW240923_204006

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

JSON record GWOSC event page