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GW241109_033317 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW241109_033317

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW241109_033317

Both component-mass lower bounds exceed 3 solar masses

Primary mass42.4 M☉

Secondary mass31.7 M☉

ObservedNov 9, 2024

Event identity

Classification and release

ID: gwtc:GW241109_033317
Event name: GW241109_033317
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, November 9, 2024 at 3:33:18 AM UTC UTC
GPS time: 1,415,158,416

Source-frame posterior

Component and remnant masses

Primary mass: 42.4 (-8.5, +11.3) M☉
Secondary mass: 31.7 (-9.4, +9.3) M☉
Remnant mass: 70 (-11, +15) M☉
Effective spin: 0.01
Network SNR: 11.3

Propagation

Distance and statistical context

Luminosity distance: 2,700 (-1,500, +2,000) Mpc
Redshift: 0.46
Astrophysical probability: 0.99
False-alarm rate: 0.0013

Provenance

Official source record

GWOSC · GWTC-5.0

GW241109_033317

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

JSON record GWOSC event page