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GW230914_111401 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW230914_111401

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW230914_111401

Both component-mass lower bounds exceed 3 solar masses

Primary mass60 M☉

Secondary mass37 M☉

ObservedSep 14, 2023

Event identity

Classification and release

ID: gwtc:GW230914_111401
Event name: GW230914_111401
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: Thursday, September 14, 2023 at 11:14:01 AM UTC UTC
GPS time: 1,378,725,259.7

Source-frame posterior

Component and remnant masses

Primary mass: 60 (-11, +12) M☉
Secondary mass: 37 (-12, +13) M☉
Remnant mass: 91.2 (-9.9, +14.2) M☉
Effective spin: 0.12
Network SNR: 17.2

Propagation

Distance and statistical context

Luminosity distance: 2,700 (-1,200, +1,600) Mpc
Redshift: 0.47
Astrophysical probability: 0.99
False-alarm rate: 0

Provenance

Official source record

GWOSC · GWTC-4.1

GW230914_111401

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

JSON record GWOSC event page