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GW231110_040320 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW231110_040320

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW231110_040320

Both component-mass lower bounds exceed 3 solar masses

Primary mass19.4 M☉

Secondary mass12.6 M☉

ObservedNov 10, 2023

Event identity

Classification and release

ID: gwtc:GW231110_040320
Event name: GW231110_040320
Classification: Binary Black Hole
Composition status: Confirmed
Confidence boundary: Both component-mass lower bounds exceed 3 solar masses
Catalog: GWTC-4.1
Preferred event version: v2
Observed at: Friday, November 10, 2023 at 4:03:20 AM UTC UTC
GPS time: 1,383,624,218.2

Source-frame posterior

Component and remnant masses

Primary mass: 19.4 (-4, +5.8) M☉
Secondary mass: 12.6 (-2.9, +3) M☉
Remnant mass: 30.6 (-3.3, +4.3) M☉
Effective spin: 0.17
Network SNR: 11.5

Propagation

Distance and statistical context

Luminosity distance: 1,890 (-910, +850) Mpc
Redshift: 0.35
Astrophysical probability: 0.99
False-alarm rate: 0

Provenance

Official source record

GWOSC · GWTC-4.1

GW231110_040320

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

JSON record GWOSC event page