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GW230726_002940 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW230726_002940

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW230726_002940

Both component-mass lower bounds exceed 3 solar masses

Primary mass35.6 M☉

Secondary mass27.9 M☉

ObservedJul 26, 2023

Event identity

Classification and release

ID: gwtc:GW230726_002940
Event name: GW230726_002940
Classification: Binary Black Hole
Composition status: Confirmed
Confidence boundary: Both component-mass lower bounds exceed 3 solar masses
Catalog: GWTC-4.1
Preferred event version: v2
Observed at: Wednesday, July 26, 2023 at 12:29:40 AM UTC UTC
GPS time: 1,374,366,598.1

Source-frame posterior

Component and remnant masses

Primary mass: 35.6 (-5.9, +8.9) M☉
Secondary mass: 27.9 (-5.9, +6) M☉
Remnant mass: 60.6 (-7.4, +9.7) M☉
Effective spin: -0.02
Network SNR: 10.5

Propagation

Distance and statistical context

Luminosity distance: 2,100 (-1,000, +1,300) Mpc
Redshift: 0.37
Astrophysical probability: 0.99
False-alarm rate: 0

Provenance

Official source record

GWOSC · GWTC-4.1

GW230726_002940

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

JSON record GWOSC event page