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GW190916_200658 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW190916_200658

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW190916_200658

Both component-mass lower bounds exceed 3 solar masses

Primary mass43.8 M☉

Secondary mass23.3 M☉

ObservedSep 16, 2019

Event identity

Classification and release

ID: gwtc:GW190916_200658
Event name: GW190916_200658
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: Monday, September 16, 2019 at 8:06:58 PM UTC UTC
GPS time: 1,252,699,636.9

Source-frame posterior

Component and remnant masses

Primary mass: 43.8 (-12.6, +19.9) M☉
Secondary mass: 23.3 (-10, +12.5) M☉
Remnant mass: 65 (-12.6, +17.3) M☉
Effective spin: 0.2
Network SNR: 8.1

Propagation

Distance and statistical context

Luminosity distance: 4,940 (-2,380, +3,710) Mpc
Redshift: 0.77
Astrophysical probability: 0.6573
False-alarm rate: 4.7

Provenance

Official source record

GWOSC · GWTC-2.1-confident

GW190916_200658

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

JSON record GWOSC event page