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GW240515_005301 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW240515_005301

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW240515_005301

Both component-mass lower bounds exceed 3 solar masses

Primary mass37.1 M☉

Secondary mass18.5 M☉

ObservedMay 15, 2024

Event identity

Classification and release

ID: gwtc:GW240515_005301
Event name: GW240515_005301
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: Wednesday, May 15, 2024 at 12:53:01 AM UTC UTC
GPS time: 1,399,769,599.1

Source-frame posterior

Component and remnant masses

Primary mass: 37.1 (-9.9, +11.4) M☉
Secondary mass: 18.5 (-4.5, +8.9) M☉
Remnant mass: 53.2 (-8, +10.3) M☉
Effective spin: 0.47
Network SNR: 12.8

Propagation

Distance and statistical context

Luminosity distance: 3,800 (-1,900, +1,800) Mpc
Redshift: 0.63
Astrophysical probability: 0.99
False-alarm rate: 0

Provenance

Official source record

GWOSC · GWTC-5.0

GW240515_005301

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

JSON record GWOSC event page