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GW200208_222617 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW200208_222617

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW200208_222617

Both component-mass lower bounds exceed 3 solar masses

Primary mass51 M☉

Secondary mass12.3 M☉

ObservedFeb 8, 2020

Event identity

Classification and release

ID: gwtc:GW200208_222617
Event name: GW200208_222617
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: Saturday, February 8, 2020 at 10:26:17 PM UTC UTC
GPS time: 1,265,235,995.9

Source-frame posterior

Component and remnant masses

Primary mass: 51 (-30, +103) M☉
Secondary mass: 12.3 (-5.5, +9.2) M☉
Remnant mass: 61 (-26, +99) M☉
Effective spin: 0.45
Network SNR: 7.4

Propagation

Distance and statistical context

Luminosity distance: 4,100 (-2,000, +4,400) Mpc
Redshift: 0.66
Astrophysical probability: 0.7001
False-alarm rate: 4.8

Provenance

Official source record

GWOSC · GWTC-3-confident

GW200208_222617

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

JSON record GWOSC event page