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GW191126_115259 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW191126_115259

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW191126_115259

Both component-mass lower bounds exceed 3 solar masses

Primary mass12.1 M☉

Secondary mass8.3 M☉

ObservedNov 26, 2019

Event identity

Classification and release

ID: gwtc:GW191126_115259
Event name: GW191126_115259
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, November 26, 2019 at 11:52:59 AM UTC UTC
GPS time: 1,258,804,397.6

Source-frame posterior

Component and remnant masses

Primary mass: 12.1 (-2.2, +5.5) M☉
Secondary mass: 8.3 (-2.4, +1.9) M☉
Remnant mass: 19.6 (-2, +3.5) M☉
Effective spin: 0.21
Network SNR: 8.3

Propagation

Distance and statistical context

Luminosity distance: 1,620 (-740, +740) Mpc
Redshift: 0.3
Astrophysical probability: 0.7004
False-alarm rate: 3.2

Provenance

Official source record

GWOSC · GWTC-3-confident

GW191126_115259

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

JSON record GWOSC event page