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Black Holes/Gravitational-wave mergers/GW200129_065458

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW200129_065458

Both component-mass lower bounds exceed 3 solar masses

Primary mass34.5 M☉

Secondary mass29 M☉

ObservedJan 29, 2020

Event identity

Classification and release

ID: gwtc:GW200129_065458
Event name: GW200129_065458
Classification: Binary Black Hole
Composition status: Confirmed
Confidence boundary: Both component-mass lower bounds exceed 3 solar masses
Catalog: GWTC-3-confident
Preferred event version: v1
Observed at: Wednesday, January 29, 2020 at 6:54:58 AM UTC UTC
GPS time: 1,264,316,116.4

Source-frame posterior

Component and remnant masses

Primary mass: 34.5 (-3.1, +9.9) M☉
Secondary mass: 29 (-9.3, +3.3) M☉
Remnant mass: 60.2 (-3.2, +4.1) M☉
Effective spin: 0.11
Network SNR: 26.8

Propagation

Distance and statistical context

Luminosity distance: 890 (-370, +260) Mpc
Redshift: 0.18
Astrophysical probability: 0.99
False-alarm rate: 0

Provenance

Official source record

GWOSC · GWTC-3-confident

GW200129_065458

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

JSON record GWOSC event page

GW200129_065458 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda