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GW250119_025138 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW250119_025138

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW250119_025138

Both component-mass lower bounds exceed 3 solar masses

Primary mass33.8 M☉

Secondary mass26.7 M☉

ObservedJan 19, 2025

Event identity

Classification and release

ID: gwtc:GW250119_025138
Event name: GW250119_025138
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, January 19, 2025 at 2:51:38 AM UTC UTC
GPS time: 1,421,290,316.8

Source-frame posterior

Component and remnant masses

Primary mass: 33.8 (-4.8, +6.3) M☉
Secondary mass: 26.7 (-6.3, +5.6) M☉
Remnant mass: 57.1 (-5, +8.2) M☉
Effective spin: 0.06
Network SNR: 14.5

Propagation

Distance and statistical context

Luminosity distance: 3,100 (-1,300, +1,100) Mpc
Redshift: 0.52
Astrophysical probability: 0.99
False-alarm rate: 0

Provenance

Official source record

GWOSC · GWTC-5.0

GW250119_025138

Last synchronized 9/12/2026, 1:40:20 AM UTC.

JSON record GWOSC event page