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GW240907_153833 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW240907_153833

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW240907_153833

Both component-mass lower bounds exceed 3 solar masses

Primary mass38 M☉

Secondary mass28.3 M☉

ObservedSep 7, 2024

Event identity

Classification and release

ID: gwtc:GW240907_153833
Event name: GW240907_153833
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: Saturday, September 7, 2024 at 3:38:33 PM UTC UTC
GPS time: 1,409,758,731.8

Source-frame posterior

Component and remnant masses

Primary mass: 38 (-8, +11.3) M☉
Secondary mass: 28.3 (-8.5, +8.7) M☉
Remnant mass: 63 (-11, +14) M☉
Effective spin: 0.04
Network SNR: 10.5

Propagation

Distance and statistical context

Luminosity distance: 4,500 (-2,100, +3,100) Mpc
Redshift: 0.71
Astrophysical probability: 0.99
False-alarm rate: 0.0001

Provenance

Official source record

GWOSC · GWTC-5.0

GW240907_153833

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

JSON record GWOSC event page