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GW200225_060421 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW200225_060421

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW200225_060421

Both component-mass lower bounds exceed 3 solar masses

Primary mass19.3 M☉

Secondary mass14 M☉

ObservedFeb 25, 2020

Event identity

Classification and release

ID: gwtc:GW200225_060421
Event name: GW200225_060421
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: Tuesday, February 25, 2020 at 6:04:21 AM UTC UTC
GPS time: 1,266,645,879.3

Source-frame posterior

Component and remnant masses

Primary mass: 19.3 (-3, +5) M☉
Secondary mass: 14 (-3.5, +2.8) M☉
Remnant mass: 32.1 (-2.8, +3.5) M☉
Effective spin: -0.12
Network SNR: 12.5

Propagation

Distance and statistical context

Luminosity distance: 1,150 (-530, +510) Mpc
Redshift: 0.22
Astrophysical probability: 0.99
False-alarm rate: 0

Provenance

Official source record

GWOSC · GWTC-3-confident

GW200225_060421

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

JSON record GWOSC event page