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GW231028_153006 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW231028_153006

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW231028_153006

Both component-mass lower bounds exceed 3 solar masses

Primary mass94 M☉

Secondary mass59 M☉

ObservedOct 28, 2023

Event identity

Classification and release

ID: gwtc:GW231028_153006
Event name: GW231028_153006
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: Saturday, October 28, 2023 at 3:30:06 PM UTC UTC
GPS time: 1,382,542,224.3

Source-frame posterior

Component and remnant masses

Primary mass: 94 (-19, +32) M☉
Secondary mass: 59 (-24, +21) M☉
Remnant mass: 144 (-13, +27) M☉
Effective spin: 0.45
Network SNR: 22.4

Propagation

Distance and statistical context

Luminosity distance: 4,200 (-1,900, +1,300) Mpc
Redshift: 0.68
Astrophysical probability: 0.99
False-alarm rate: 0

Provenance

Official source record

GWOSC · GWTC-4.1

GW231028_153006

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

JSON record GWOSC event page