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GW190701_203306 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW190701_203306

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW190701_203306

Both component-mass lower bounds exceed 3 solar masses

Primary mass54.1 M☉

Secondary mass40.5 M☉

ObservedJul 1, 2019

Event identity

Classification and release

ID: gwtc:GW190701_203306
Event name: GW190701_203306
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: Monday, July 1, 2019 at 8:33:06 PM UTC UTC
GPS time: 1,246,048,404.5

Source-frame posterior

Component and remnant masses

Primary mass: 54.1 (-8, +12.6) M☉
Secondary mass: 40.5 (-12.1, +8.7) M☉
Remnant mass: 90.2 (-8.9, +11.2) M☉
Effective spin: -0.08
Network SNR: 11.2

Propagation

Distance and statistical context

Luminosity distance: 2,090 (-740, +770) Mpc
Redshift: 0.38
Astrophysical probability: 0.9999
False-alarm rate: 0.0057

Provenance

Official source record

GWOSC · GWTC-2.1-confident

GW190701_203306

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

JSON record GWOSC event page