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GW190403_051519 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW190403_051519

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW190403_051519

Both component-mass lower bounds exceed 3 solar masses

Primary mass85 M☉

Secondary mass20 M☉

ObservedApr 3, 2019

Event identity

Classification and release

ID: gwtc:GW190403_051519
Event name: GW190403_051519
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: v1
Observed at: Wednesday, April 3, 2019 at 5:15:19 AM UTC UTC
GPS time: 1,238,303,737.2

Source-frame posterior

Component and remnant masses

Primary mass: 85 (-33, +27.8) M☉
Secondary mass: 20 (-8.4, +26.3) M☉
Remnant mass: 102.2 (-24.3, +26.3) M☉
Effective spin: 0.68
Network SNR: 7.6

Propagation

Distance and statistical context

Luminosity distance: 8,280 (-4,290, +6,720) Mpc
Redshift: 1.18
Astrophysical probability: 0.6092
False-alarm rate: 7.7

Provenance

Official source record

GWOSC · GWTC-2.1-confident

GW190403_051519

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

JSON record GWOSC event page