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GW231102_071736 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW231102_071736

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW231102_071736

Both component-mass lower bounds exceed 3 solar masses

Primary mass61 M☉

Secondary mass42 M☉

ObservedNov 2, 2023

Event identity

Classification and release

ID: gwtc:GW231102_071736
Event name: GW231102_071736
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, November 2, 2023 at 7:17:36 AM UTC UTC
GPS time: 1,382,944,674.4

Source-frame posterior

Component and remnant masses

Primary mass: 61 (-12, +14) M☉
Secondary mass: 42 (-13, +13) M☉
Remnant mass: 98 (-13, +19) M☉
Effective spin: 0.06
Network SNR: 15.6

Propagation

Distance and statistical context

Luminosity distance: 3,800 (-1,800, +2,100) Mpc
Redshift: 0.63
Astrophysical probability: 0.99
False-alarm rate: 0

Provenance

Official source record

GWOSC · GWTC-4.1

GW231102_071736

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

JSON record GWOSC event page