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GW200302_015811 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW200302_015811

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW200302_015811

Both component-mass lower bounds exceed 3 solar masses

Primary mass37.8 M☉

Secondary mass20 M☉

ObservedMar 2, 2020

Event identity

Classification and release

ID: gwtc:GW200302_015811
Event name: GW200302_015811
Classification: Binary Black Hole
Composition status: Confirmed
Confidence boundary: Both component-mass lower bounds exceed 3 solar masses
Catalog: GWTC-3-confident
Preferred event version: v1
Observed at: Monday, March 2, 2020 at 1:58:11 AM UTC UTC
GPS time: 1,267,149,509.5

Source-frame posterior

Component and remnant masses

Primary mass: 37.8 (-8.5, +8.7) M☉
Secondary mass: 20 (-5.7, +8.1) M☉
Remnant mass: 55.5 (-6.6, +8.9) M☉
Effective spin: 0.01
Network SNR: 10.8

Propagation

Distance and statistical context

Luminosity distance: 1,480 (-700, +1,020) Mpc
Redshift: 0.28
Astrophysical probability: 0.9064
False-alarm rate: 0.11

Provenance

Official source record

GWOSC · GWTC-3-confident

GW200302_015811

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

JSON record GWOSC event page