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GW240525_031210 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW240525_031210

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW240525_031210

Both component-mass lower bounds exceed 3 solar masses

Primary mass31.1 M☉

Secondary mass21.4 M☉

ObservedMay 25, 2024

Event identity

Classification and release

ID: gwtc:GW240525_031210
Event name: GW240525_031210
Classification: Binary Black Hole
Composition status: Confirmed
Confidence boundary: Both component-mass lower bounds exceed 3 solar masses
Catalog: GWTC-5.0
Preferred event version: v1
Observed at: Saturday, May 25, 2024 at 3:12:10 AM UTC UTC
GPS time: 1,400,641,948.6

Source-frame posterior

Component and remnant masses

Primary mass: 31.1 (-7.2, +12.1) M☉
Secondary mass: 21.4 (-6.8, +7.1) M☉
Remnant mass: 50.2 (-8.8, +11.7) M☉
Effective spin: 0.17
Network SNR: 9.1

Propagation

Distance and statistical context

Luminosity distance: 4,500 (-2,200, +3,000) Mpc
Redshift: 0.72
Astrophysical probability: 0.97
False-alarm rate: 0.29

Provenance

Official source record

GWOSC · GWTC-5.0

GW240525_031210

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

JSON record GWOSC event page