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GW190915_235702 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW190915_235702

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW190915_235702

Both component-mass lower bounds exceed 3 solar masses

Primary mass32.6 M☉

Secondary mass24.5 M☉

ObservedSep 15, 2019

Event identity

Classification and release

ID: gwtc:GW190915_235702
Event name: GW190915_235702
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: Sunday, September 15, 2019 at 11:57:02 PM UTC UTC
GPS time: 1,252,627,040.6

Source-frame posterior

Component and remnant masses

Primary mass: 32.6 (-4.9, +8.8) M☉
Secondary mass: 24.5 (-5.8, +4.9) M☉
Remnant mass: 54.7 (-5, +6.6) M☉
Effective spin: -0.03
Network SNR: 13.1

Propagation

Distance and statistical context

Luminosity distance: 1,750 (-650, +710) Mpc
Redshift: 0.32
Astrophysical probability: 1
False-alarm rate: 0

Provenance

Official source record

GWOSC · GWTC-2.1-confident

GW190915_235702

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

JSON record GWOSC event page