What does "quasi-satellite" mean?

An object in a specific type of coorbital configuration (1:1 orbital resonance) with a planet, causing it to stay close to the planet over many orbital periods, despite not being a true satellite.

What is a synonym for "quasi-satellite"?

Common synonyms include: quasi-moon, quasimoon.

Quasi-satellite

noun

noun ·Rare ·Advanced level

Definitions

Noun

1
An object in a specific type of coorbital configuration (1:1 orbital resonance) with a planet, causing it to stay close to the planet over many orbital periods, despite not being a true satellite.

Synonyms

All synonyms

quasi-moon quasimoon

Etymology

From quasi- + satellite.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.