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GW190924_021846 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW190924_021846

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW190924_021846

Both component-mass lower bounds exceed 3 solar masses

Primary mass8.8 M☉

Secondary mass5.1 M☉

ObservedSep 24, 2019

Event identity

Classification and release

ID: gwtc:GW190924_021846
Event name: GW190924_021846
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: Tuesday, September 24, 2019 at 2:18:46 AM UTC UTC
GPS time: 1,253,326,744.8

Source-frame posterior

Component and remnant masses

Primary mass: 8.8 (-1.8, +4.3) M☉
Secondary mass: 5.1 (-1.5, +1.2) M☉
Remnant mass: 13.3 (-0.9, +3) M☉
Effective spin: 0.03
Network SNR: 12

Propagation

Distance and statistical context

Luminosity distance: 550 (-220, +220) Mpc
Redshift: 0.11
Astrophysical probability: 1
False-alarm rate: 0

Provenance

Official source record

GWOSC · GWTC-2.1-confident

GW190924_021846

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

JSON record GWOSC event page