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GW241231_054133 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW241231_054133

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW241231_054133

Both component-mass lower bounds exceed 3 solar masses

Primary mass12.4 M☉

Secondary mass7.1 M☉

ObservedDec 31, 2024

Event identity

Classification and release

ID: gwtc:GW241231_054133
Event name: GW241231_054133
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: Tuesday, December 31, 2024 at 5:41:33 AM UTC UTC
GPS time: 1,419,658,911.6

Source-frame posterior

Component and remnant masses

Primary mass: 12.4 (-2.8, +3.3) M☉
Secondary mass: 7.1 (-1.3, +2) M☉
Remnant mass: 18.7 (-1.3, +2.1) M☉
Effective spin: 0.08
Network SNR: 17.4

Propagation

Distance and statistical context

Luminosity distance: 910 (-330, +190) Mpc
Redshift: 0.18
Astrophysical probability: 0.99
False-alarm rate: 0

Provenance

Official source record

GWOSC · GWTC-5.0

GW241231_054133

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

JSON record GWOSC event page