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GW191216_213338 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW191216_213338

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW191216_213338

Both component-mass lower bounds exceed 3 solar masses

Primary mass12.1 M☉

Secondary mass7.7 M☉

ObservedDec 16, 2019

Event identity

Classification and release

ID: gwtc:GW191216_213338
Event name: GW191216_213338
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: Monday, December 16, 2019 at 9:33:38 PM UTC UTC
GPS time: 1,260,567,236.4

Source-frame posterior

Component and remnant masses

Primary mass: 12.1 (-2.2, +4.6) M☉
Secondary mass: 7.7 (-1.9, +1.6) M☉
Remnant mass: 18.87 (-0.93, +2.81) M☉
Effective spin: 0.11
Network SNR: 18.6

Propagation

Distance and statistical context

Luminosity distance: 340 (-130, +120) Mpc
Redshift: 0.07
Astrophysical probability: 0.99
False-alarm rate: 0

Provenance

Official source record

GWOSC · GWTC-3-confident

GW191216_213338

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

JSON record GWOSC event page