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GW191222_033537 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW191222_033537

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW191222_033537

Both component-mass lower bounds exceed 3 solar masses

Primary mass45.1 M☉

Secondary mass34.7 M☉

ObservedDec 22, 2019

Event identity

Classification and release

ID: gwtc:GW191222_033537
Event name: GW191222_033537
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: Sunday, December 22, 2019 at 3:35:37 AM UTC UTC
GPS time: 1,261,020,955.1

Source-frame posterior

Component and remnant masses

Primary mass: 45.1 (-8, +10.9) M☉
Secondary mass: 34.7 (-10.5, +9.3) M☉
Remnant mass: 75.5 (-9.9, +15.3) M☉
Effective spin: -0.04
Network SNR: 12.5

Propagation

Distance and statistical context

Luminosity distance: 3,000 (-1,700, +1,700) Mpc
Redshift: 0.51
Astrophysical probability: 0.99
False-alarm rate: 0

Provenance

Official source record

GWOSC · GWTC-3-confident

GW191222_033537

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

JSON record GWOSC event page