- Semi-major axis
- It is the measure of the radius of an orbit taken from the points of that same orbit's two most distant points.
Semi-major axis in astronomyEdit
- Basicly, is the distance from which a planet is separated from its star.
- The semi-major axis is one of the most important orbital elements of an orbit, along with its orbital period.
- For solar system objects, the semi-major axis is related to the period of the orbit.
- The astronomical unit is the unit used to measure the semi-major axis of a planet.
- It is one of the data used to identify if an exoplanet is located within the habitable zone of its planetary system.