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The software is bundled with the EXORB program that can determine the orbits of asteroids, comets and satellites, based on observation data as provided by the Minor Planet Center or NEODyS. [4] The program can be used for asteroid impact prediction. [3]
Animations of the Solar System's inner planets orbiting. Each frame represents 2 days of motion. Animations of the Solar System's outer planets orbiting. This animation is 100 times faster than the inner planet animation. The planets and other large objects in orbit around the Sun lie near the plane of Earth's orbit, known as the ecliptic ...
Typical DSO survey in Celestia. Celestia versions 1.6.3 and under display the Hipparcos Catalogue (HIP) of 118,322 stars and a compiled catalogue of galaxies, while version 1.7.0 includes stars from the Tycho-2 Catalogue alongside the Hipparcos stars, with some data from Gaia, increasing the star count to over 2 million. [23]
A small orrery showing Earth and the inner planets. An orrery is a mechanical model of the Solar System that illustrates or predicts the relative positions and motions of the planets and moons, usually according to the heliocentric model. It may also represent the relative sizes of these bodies; however, since accurate scaling is often not ...
Inner planet: A planet in the Solar System that have orbits smaller than the asteroid belt. [nb 2] Mercury, Venus, Earth, Mars: Outer planet: A planet in the Solar System beyond the asteroid belt, and hence refers to the gas giants. Jupiter, Saturn, Uranus and Neptune Pulsar planet: A planet that orbits a pulsar or a rapidly rotating neutron star.
English: This image shows the orbits, nodes, and perihelion/aphelion positions of the inner planets. Seen from the northern ecliptic pole. The planets run counterclockwise. At the time of vernal equinox, the earth is at the bottom of the figure. The blue part of an orbit is north of the ecliptic plane, the pink part south.
The planets will form a line, but it is almost never a straight line as the orbits are not the same. There are four different kinds of planetary alignments. Each is dependent upon the number of ...
"Inferior planet" refers to Mercury and Venus, which are closer to the Sun than Earth is. "Superior planet" refers to Mars, Jupiter, Saturn, Uranus, and Neptune (the latter two added later), which are further from the Sun than Earth is. The terms are sometimes used more generally; for example, Earth is an inferior planet relative to Mars.