Inferior and superior planets - Wikipedia
In the Solar System, a planet is said to be inferior or interior with respect to another planet if its orbit lies inside the other planet's orbit around the Sun. In this situation, the latter planet is said to be superior to the former.
Orbits - University of Oregon
The planets outside of the Earth's orbit (Mars, Jupiter, Saturn, Uranus, Neptune) are called superior planets. The planets inside of the Earth's orbit (Mercury, Venus) are called inferior planets. Notice that inferior planets are always near the Sun (as seen from the Earth).
Motion of the Inner Planets - Durham University
The inferior planets (Mercury and Venus) orbit faster than the Earth and hence they overtake the Earth. So relative to a fixed Earth-Sun direction we see these planets move in an anticlockwise direction as observed from a viewpoint high above the Earth's north pole.
Copernican Derivations - Solar System Models - NAAP
Calculating the size of an inferior planet's orbit is fairly easy – we need only one observation. Recall that if an inferior planet is at greatest elongation then the sun, the inferior planet, and the Earth (or other superior planet) are at a right angle.
The Motion of the Planets – British Astronomical Association
2018年1月17日 · The inner planets, Mercury and Venus, are referred to as ‘inferior planets.’ This is not a derogatory statement – it simply means they are closer to the Sun than is the Earth. In Figure 1 I have given the orbit of an inferior planet; it can represent either Mercury or Venus, the only difference being that Mercury goes through the cycle ...
2021年1月21日 · Inferior planets, Mercury and Venus, are those which orbit closer to the Sun than the Earth. Superior planets, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto, have orbits farther from the Sun.
Astronomy 505 - New Mexico State University
A planet can be at an eastern or western elongation, depending on whether the planet lies to the east or west of the Sun as seen from the Earth. The elongation of a superior planet can vary from 0° to 180°. Inferior planets, however, range between 0° and a greatest elongation (28° for Mercury and 48° for Venus).
The Motion of the Planets in the Sky - California State University ...
The path a planet takes in the sky is determined by how far it is from the Sun. Planets closer to the Sun than Earth, the so called inferior planets, exhibit motion quite different from planets that lie further form the Sun, the so called superior planets.
The inferior planets -- those which orbit closer to the Sun than Earth does -- have configurations as shown: At both superior conjunction (SC) and inferior conjunction (IC), the planet is in line with the Earth and Sun and has an elongation of 0°. At greatest elongation, the planet reaches its maximum separation from the Sun, a value
UNLV Physics & Astronomy
When an inferior planet is at greatest elongation, the line of sight to the inferior planet is tangent to the inferior planet's circular orbit and the angle at the inferior planet between Sun and Earth is guaranteed to be 90°.
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