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GW190708_232457 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW190708_232457

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW190708_232457

Both component-mass lower bounds exceed 3 solar masses

Primary mass19.8 M☉

Secondary mass11.6 M☉

ObservedJul 8, 2019

Event identity

Classification and release

ID: gwtc:GW190708_232457
Event name: GW190708_232457
Classification: Binary Black Hole
Composition status: Confirmed
Confidence boundary: Both component-mass lower bounds exceed 3 solar masses
Catalog: GWTC-2.1-confident
Preferred event version: v2
Observed at: Monday, July 8, 2019 at 11:24:57 PM UTC UTC
GPS time: 1,246,663,515.3

Source-frame posterior

Component and remnant masses

Primary mass: 19.8 (-4.3, +4.3) M☉
Secondary mass: 11.6 (-2, +3.1) M☉
Remnant mass: 30.1 (-2.1, +2.9) M☉
Effective spin: 0.05
Network SNR: 13.4

Propagation

Distance and statistical context

Luminosity distance: 930 (-390, +310) Mpc
Redshift: 0.19
Astrophysical probability: 0.9997
False-alarm rate: 0.0003

Provenance

Official source record

GWOSC · GWTC-2.1-confident

GW190708_232457

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

JSON record GWOSC event page