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GW241009_084816 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW241009_084816

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW241009_084816

Both component-mass lower bounds exceed 3 solar masses

Primary mass12.7 M☉

Secondary mass8.1 M☉

ObservedOct 9, 2024

Event identity

Classification and release

ID: gwtc:GW241009_084816
Event name: GW241009_084816
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: Wednesday, October 9, 2024 at 8:48:16 AM UTC UTC
GPS time: 1,412,498,914.8

Source-frame posterior

Component and remnant masses

Primary mass: 12.7 (-2.5, +4) M☉
Secondary mass: 8.1 (-1.9, +1.9) M☉
Remnant mass: 20.1 (-1.9, +2.4) M☉
Effective spin: -0.05
Network SNR: 12.1

Propagation

Distance and statistical context

Luminosity distance: 1,130 (-480, +580) Mpc
Redshift: 0.22
Astrophysical probability: 0.99
False-alarm rate: 0

Provenance

Official source record

GWOSC · GWTC-5.0

GW241009_084816

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

JSON record GWOSC event page