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GW250104_015122 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW250104_015122

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW250104_015122

Both component-mass lower bounds exceed 3 solar masses

Primary mass45.8 M☉

Secondary mass34.5 M☉

ObservedJan 4, 2025

Event identity

Classification and release

ID: gwtc:GW250104_015122
Event name: GW250104_015122
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, January 4, 2025 at 1:51:22 AM UTC UTC
GPS time: 1,419,990,700.3

Source-frame posterior

Component and remnant masses

Primary mass: 45.8 (-8.8, +11) M☉
Secondary mass: 34.5 (-9.9, +10.7) M☉
Remnant mass: 76 (-11, +17) M☉
Effective spin: 0.11
Network SNR: 12.1

Propagation

Distance and statistical context

Luminosity distance: 4,800 (-2,300, +2,500) Mpc
Redshift: 0.76
Astrophysical probability: 0.99
False-alarm rate: 0

Provenance

Official source record

GWOSC · GWTC-5.0

GW250104_015122

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

JSON record GWOSC event page