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GW241229_155844 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW241229_155844

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW241229_155844

Both component-mass lower bounds exceed 3 solar masses

Primary mass52 M☉

Secondary mass33 M☉

ObservedDec 29, 2024

Event identity

Classification and release

ID: gwtc:GW241229_155844
Event name: GW241229_155844
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: Sunday, December 29, 2024 at 3:58:44 PM UTC UTC
GPS time: 1,419,523,142.7

Source-frame posterior

Component and remnant masses

Primary mass: 52 (-15, +22) M☉
Secondary mass: 33 (-15, +16) M☉
Remnant mass: 82 (-18, +26) M☉
Effective spin: 0.05
Network SNR: 8.7

Propagation

Distance and statistical context

Luminosity distance: 6,800 (-3,400, +5,200) Mpc
Redshift: 1
Astrophysical probability: 0.99
False-alarm rate: 0.083

Provenance

Official source record

GWOSC · GWTC-5.0

GW241229_155844

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

JSON record GWOSC event page