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GW240908_125134 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW240908_125134

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW240908_125134

Both component-mass lower bounds exceed 3 solar masses

Primary mass45 M☉

Secondary mass32 M☉

ObservedSep 8, 2024

Event identity

Classification and release

ID: gwtc:GW240908_125134
Event name: GW240908_125134
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: Sunday, September 8, 2024 at 12:51:34 PM UTC UTC
GPS time: 1,409,835,112.3

Source-frame posterior

Component and remnant masses

Primary mass: 45 (-11, +15) M☉
Secondary mass: 32 (-11, +11) M☉
Remnant mass: 74 (-14, +18) M☉
Effective spin: -0.09
Network SNR: 8.6

Propagation

Distance and statistical context

Luminosity distance: 4,700 (-2,300, +3,500) Mpc
Redshift: 0.74
Astrophysical probability: 0.97
False-alarm rate: 0.29

Provenance

Official source record

GWOSC · GWTC-5.0

GW240908_125134

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

JSON record GWOSC event page