inclination of an orbit
Definition
- Noun:
- (Astronomy) The angle between the orbital plane of a celestial body and the plane of the ecliptic, measured in degrees. This is a specific astronomical parameter that describes the tilt of an object's orbit around the Sun relative to Earth's orbital plane.
Usage
- As a subject: The inclination of an orbit is a fundamental orbital element.
- In measurement: Astronomers calculated the inclination of the orbit to be 7 degrees.
- With possessives: The comet's inclination of orbit is very high.
Examples
- Pluto has a high inclination of its orbit compared to the planets.
- Determining the inclination of an orbit helps classify if an object is a planet or a trans-Neptunian object.
- A low inclination of orbit, like that of Venus, means it orbits close to the plane of the solar system.
Advanced Usage
- In celestial mechanics, a zero-degree inclination of an orbit means the object orbits in exactly the same plane as Earth's orbit (the ecliptic).
- The term is often used in the context of describing and differentiating between planets, asteroids, and comets based on their orbital characteristics.
Variants and Related Words
- Orbital inclination (n): This is a more common and synonymous phrasing for "inclination of an orbit."
- The orbital inclination of Mercury is 7 degrees.
- Inclination (n): In a general or broader astronomical context, "inclination" can refer to the angle between two planes or axes.
- Ecliptic (n): The plane of Earth's orbit around the Sun, which serves as the primary reference plane for measuring orbital inclination in the solar system.
Synonyms
- Orbital tilt: A less technical term describing the same concept.
- Axial tilt is not a synonym. Axial tilt refers to the angle of a planet's rotational axis relative to its orbital plane, which is a different property.
Related Terms and Context
- Orbital plane (n): The flat, imaginary surface that contains an object's orbit.
- Orbital element (n): One of the parameters required to uniquely identify a specific orbit. Inclination of an orbit is one of these key elements.
Noun
-
(astronomy) the angle between the plane of the orbit and the plane of the ecliptic stated in degrees
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