What does perilune mean?
The perilune is a term used in astronomy to describe the point in a satellite's or moon's orbit where it is closest to the celestial body it is orbiting. This point is often referred to as the point of closest approach or perigee. The perilune is an important concept in understanding the orbits of satellites and moons, as it can affect their stability and behavior. In space exploration, the perilune is often a critical point in a spacecraft's mission, as it can determine the spacecraft's trajectory and altitude. The term 'perilune' is derived from the Latin words 'per' meaning 'through' and 'luna' meaning 'moon'. It is a useful term for astronomers and space enthusiasts to understand the orbits of celestial bodies and their behavior.
nounThe perilune is the point in the orbit of a satellite or moon where it is closest to the celestial body it is orbiting.
- The point in the orbit of a satellite or moon where it is closest to the celestial body it is orbiting.
"The spacecraft's perilune was 200 kilometers above the planet's surface."
"The spacecraft's perilune was 200 kilometers above the planet's surface."
"The moon's perilune was at an altitude of 100 kilometers."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of perilune
The term 'perilune' is derived from the Latin words 'per' meaning 'through' and 'luna' meaning 'moon'. It is a combination of these two words to describe the point in a satellite's or moon's orbit where it is closest to the celestial body it is orbiting.
Usage notes
The term 'perilune' is often used in astronomy and space exploration to describe the point in a satellite's or moon's orbit where it is closest to the celestial body it is orbiting.