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GW240930_035959 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW240930_035959

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW240930_035959

Both component-mass lower bounds exceed 3 solar masses

Primary mass25.5 M☉

Secondary mass11.2 M☉

ObservedSep 30, 2024

Event identity

Classification and release

ID: gwtc:GW240930_035959
Event name: GW240930_035959
Classification: Binary Black Hole
Composition status: Confirmed
Confidence boundary: Both component-mass lower bounds exceed 3 solar masses
Catalog: GWTC-5.0
Preferred event version: v1
Observed at: Monday, September 30, 2024 at 4:00:00 AM UTC UTC
GPS time: 1,411,704,018

Source-frame posterior

Component and remnant masses

Primary mass: 25.5 (-4.8, +5) M☉
Secondary mass: 11.2 (-1.8, +2.1) M☉
Remnant mass: 35.5 (-3.4, +3.8) M☉
Effective spin: -0.05
Network SNR: 16.1

Propagation

Distance and statistical context

Luminosity distance: 950 (-290, +490) Mpc
Redshift: 0.19
Astrophysical probability: 0.99
False-alarm rate: 0

Provenance

Official source record

GWOSC · GWTC-5.0

GW240930_035959

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

JSON record GWOSC event page