Planetoid
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USS Enterprise-D in orbit of the planetoid Vandor IV Planetoid is the common designation for a small planet-like celestial body orbiting a star.
Planetoid
Related Category: Astronomy: General
see asteroid.
More on Planetoid
Asteroid - planetoid, or minor planet, small body orbiting the sun.
Definition: planetoid: An asteroid. A medium-sized rocky object orbiting the Sun; smaller than a planet, larger than a meteoroid. Asteroids show no evidence of an atmosphere or other types of activity associated with comets.
Centaur (planetoid)
The centaurs are a class of icy planetoids named after the mythical race of centaurs. Centaurs orbit the Sun between Jupiter and Neptune, crossing the orbits of the large gas giant planets.
Planetoid. Another name for an asteroid or minor planet.
Planisphere. A circular map of the stars covered by a rotating mask that has a window or opening in it.
Planetoid/Planetesimal: Planetoids are objects that are larger than asteroids but cannot be called a planet. The term planetesimal is sometimes used to refer to asteroids, but also objects with a specific diameter of approx. 10 km.
PLANETOID
A planetoid is a very small planet. The larger are sometimes called planetoids.
PLANETOLOGIST
A planetologist is an astronomer who studies the physical features of planets.
Planetoids
How Do Planets Get Names?
When a large object is found, the International Astronomical Union decides what it will be named officially.
The planetoid is usually even colder, because it approaches the Sun this closely only briefly during its 10,500 year orbit around the Sun. At its most distant, "Sedna" is 130 billion kilometers (84 billion miles) from the Sun.
Centaur (planetoid)
The centaurs are an unstable orbital class of minor planets named after the mythological race of centaurs. The name was chosen because they behave as half asteroid and half comet....
Ceres ...
The distant planetoid Sedna appears to be covered in a tar-like sludge that gives it a distinctly red hue, a new study reveals. The findings suggests the dark crust was baked-on by the Sun and has been untouched by other objects for millions of years.
descending node (NASA SP-7, 1965) That point at which a planet, planetoid, or comet crosses to the south side of the ecliptic; that point at which a satellite crosses to the south side of the equatorial plane of its primary.
The larger of such bodies are sometimes called principal planets to distinguish them from asteroids, planetoids, or minor planets, which are comparatively very small. The larger planets are accompanied by satellites, such as the moon.
(more) asteroid (also "planetoid") a medium-sized rocky object orbiting the Sun; smaller than a planet, larger than a meteoroid asteroid number asteroids are assigned a serial number when they are discovered.
also called minor planet or planetoid
any of a host of rocky small bodies, about 1,000 km (600 miles) or less in diameter, that orbit the Sun primarily between the orbits of Mars and Jupiter in a nearly flat ring called the asteroid belt.
Asteroids, also called minor planets or planetoids, are a class of astronomical objects. The term asteroid is generally used to indicate a diverse group of small celestial bodies in the solar system that orbit around the Sun.
In 1977, Charles Kowal discovered 2060 Chiron, an icy planetoid with an orbit between Saturn and Uranus. He used a blink comparator; the same device that had allowed Clyde Tombaugh to discover Pluto nearly 50 years before.
The words asteroid, minor planet and planetoid are (unofficial and) interchangable. They each refer to the small rocky bodies that are mainly confined to the asteroid belt between the planets Mars and Jupiter.
Internal heating of the these accreted bodies ultimately melted the accreted chondrules However, some planetoids and asteroids were too small to have much internal heating and their component chondrules escaped destruction.
Asteroids are also known as planetoids or minor planets.
THE ASTEROID BELT
The asteroid belt is a doughnut-shaped concentration of asteroids orbiting the Sun between the orbits of Mars and Jupiter, closer to the orbit of Mars.
(Added 12/26/05) When the distant planetoid Sedna was discovered on the outer edges of our solar system, it posed a puzzle to scientists.
An asteroid is a large rocky object or very small planet (planetoid). Most asteroids orbit the Sun in the asteroid belt between Mars and Jupiter. A few asteroids approach the Sun more closely.
Some of them are larger and are called minor planets or planetoids. They may also be known as NEOs -- Near Earth Objects. Whatever they may be called, they have much to tell us about our solar system.
Guess what?
Asteroids are often referred to as minor planets or planetoids.
A starlike body; esp. one of the numerous small planets whose orbits lie between those of Mars and Jupiter; -- called also planetoids and minor planets.
Asteroids
NEAR burn anomaly ...
to understand how planets interact with the gas discs from which they form as the disc evolves over its lifetime," says Mordecai-Mark Mac Low, Curator of Astrophysics and Division Chair of Physical Sciences at the Museum. "We show that the planetoids ...
54 AU, Uranus's is 19.19 AU, and Neptune's is 30.07. The Kuiper belt of planetoids ranges from 30 to 50 AU. Finally, the Oort cloud, which gives birth to the long-period comets, is more than 100 AU from the Sun.
Their name literally means "starlike bodies," but asteroids are definitely not stars. They are too small even to be classified as planets. Astronomers often refer to them as "minor planets," or sometimes "planetoids." ...
Also called minor planet [H76] (c) Also called planetoids or minor planets, the asteroids are tiny planets most of which orbit the Sun between Mars and Jupiter. The largest - and the first discovered - is Ceres, with a diameter of 1,003 km.
dynamically interesting orbits or groups of objects with similar orbital characteristics, generally use the term minor planet, whereas those who study the physical properties of such objects usually refer to them as asteroids. The term planetoid is ...
 See also: Planet, Orbit, Sun, Earth, Solar
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