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GW191127_050227 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW191127_050227

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW191127_050227

Both component-mass lower bounds exceed 3 solar masses

Primary mass53 M☉

Secondary mass24 M☉

ObservedNov 27, 2019

Event identity

Classification and release

ID: gwtc:GW191127_050227
Event name: GW191127_050227
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: Wednesday, November 27, 2019 at 5:02:27 AM UTC UTC
GPS time: 1,258,866,165.5

Source-frame posterior

Component and remnant masses

Primary mass: 53 (-20, +47) M☉
Secondary mass: 24 (-14, +17) M☉
Remnant mass: 76 (-21, +39) M☉
Effective spin: 0.18
Network SNR: 9.2

Propagation

Distance and statistical context

Luminosity distance: 3,400 (-1,900, +3,100) Mpc
Redshift: 0.57
Astrophysical probability: 0.74
False-alarm rate: 0.25

Provenance

Official source record

GWOSC · GWTC-3-confident

GW191127_050227

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

JSON record GWOSC event page