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GW241225_042553 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW241225_042553

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW241225_042553

Both component-mass lower bounds exceed 3 solar masses

Primary mass12.4 M☉

Secondary mass8.1 M☉

ObservedDec 25, 2024

Event identity

Classification and release

ID: gwtc:GW241225_042553
Event name: GW241225_042553
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, December 25, 2024 at 4:25:53 AM UTC UTC
GPS time: 1,419,135,971.2

Source-frame posterior

Component and remnant masses

Primary mass: 12.4 (-2.3, +3) M☉
Secondary mass: 8.1 (-1.5, +1.5) M☉
Remnant mass: 19.6 (-1.1, +1.8) M☉
Effective spin: 0.12
Network SNR: 16.5

Propagation

Distance and statistical context

Luminosity distance: 660 (-270, +190) Mpc
Redshift: 0.14
Astrophysical probability: 0.99
False-alarm rate: 0

Provenance

Official source record

GWOSC · GWTC-5.0

GW241225_042553

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

JSON record GWOSC event page