Information about Hilda Asteroid
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the asteroids of the inner solar system. The Hilda family is coloured brown
The Hilda family of asteroids is constituted of asteroids with a semi-major axis between 3.7 AU and 4.2 AU, an eccentricity greater than 0.07, and an inclination less than 20°. They do not form a true asteroid family, in the sense that they do not descend from a common parent object. Instead, this is a dynamical family of bodies, made up of asteroids which are in a 2:3 orbital resonance with Jupiter. Hildas move in their orbits so that their aphelia put them opposite Jupiter, or 60 degrees ahead of or behind Jupiter at the L4 and L5 Lagrangian points. Over three successive orbits each Hilda asteroid passes through all of these three points in sequence.
The namesake is 153 Hilda, discovered by Johann Palisa in 1875.
Small Solar System bodies |
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Vulcanoids Near-Earth asteroids Main belt Jupiter Trojans Centaurs Damocloids Comets Trans-Neptunians (Kuiper belt • Scattered disc objects • Oort cloud)
For other objects and regions, see , , Asteroid moons, meteoroids and the Solar System.
For a complete listing, see List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names. |
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.
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semi-major axis (also semimajor axis) is used to describe the dimensions of ellipses and hyperbolae.
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Ellipse
The major axis of an ellipse is its longest diameter, a line that runs through the centre and both foci, its ends being at the widest points of the shape...... Click the link for more information.
orbit's eccentricity, is an important parameter of the orbit that defines its absolute shape. Eccentricity may be interpreted as a measure of how much this shape deviates from a circle.
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For the science fiction novella by William Shunn, see .
Inclination in general is the angle between a reference plane and another plane or axis of direction.
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orbital resonance occurs when two orbiting bodies exert a regular, periodic gravitational influence on each other, usually due to their orbital periods being related by a ratio of two small integers.
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Jupiter
This processed color image of Jupiter was produced in 1990 by the U.S. Geological Survey from a Voyager image captured in 1979. The colors have been enhanced to bring out detail.
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This processed color image of Jupiter was produced in 1990 by the U.S. Geological Survey from a Voyager image captured in 1979. The colors have been enhanced to bring out detail.
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Lagrangian points (pronounced [ləˈgɹɒɲ.dʒi.ən] or [laˈgʀɑ̃.
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153 Hilda is a very large asteroid in the outer Main belt. Because it is composed of primitive carbonaceous materials, it has a very dark surface.
Hilda gives its name to an asteroid group called Hilda asteroids (or shorter Hildas).
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Hilda gives its name to an asteroid group called Hilda asteroids (or shorter Hildas).
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Johann Palisa (December 6 1848–May 2 1925) was an Austrian astronomer, born in Troppau in Austrian Silesia (now in the Czech Republic).
He was a prolific discoverer of asteroids, discovering 122 in all, from 136 Austria in 1874 to 1073 Gellivara in 1923.
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He was a prolific discoverer of asteroids, discovering 122 in all, from 136 Austria in 1874 to 1073 Gellivara in 1923.
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18th century - 19th century - 20th century
1840s 1850s 1860s - 1870s - 1880s 1890s 1900s
1872 1873 1874 - 1875 - 1876 1877 1878
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Subjects: Archaeology - Architecture -
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1840s 1850s 1860s - 1870s - 1880s 1890s 1900s
1872 1873 1874 - 1875 - 1876 1877 1878
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Subjects: Archaeology - Architecture -
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Small Solar System Body (SSSB) is a term defined in 2006 by the International Astronomical Union to describe objects in the Solar System that are neither planets nor dwarf planets:
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Vulcanoids are a hypothetical group of asteroids that may orbit in a dynamically stable zone between 0.08 and 0.21 astronomical units from the Sun, well within the orbit of Mercury.
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Near-Earth asteroids (NEAs) are asteroids whose orbits are close to Earth's orbit. Some NEAs' orbits intersect Earth's so they pose a collision danger. On the other hand, NEAs are most easily accessible for spacecraft from Earth; in fact, some can be reached with much less fuel
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asteroid belt is the region of the Solar System located roughly between the orbits of the planets Mars and Jupiter where 98.5% of the known minor planets' orbits can be found.
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Trojan asteroids are a large group of objects that share the orbit of the planet Jupiter around the Sun. Viewed from a coordinate system that is fixed on Jupiter, they appear to orbit one of the two Lagrangian points of stability, L4 and L5
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centaurs are a class of icy planetoids named after the race of centaurs. Centaurs orbit the Sun between Jupiter and Neptune, crossing the orbits of the large gas giant planets.
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Damocloids are asteroids such as 5335 Damocles and 1996 PW that have Halley family or long-period highly eccentric orbits typical of periodic comets such as Comet Halley, but without showing a cometary coma or tail.
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comet is a small body in the solar system that orbits the Sun and (at least occasionally) exhibits a coma (or atmosphere) and/or a tail — both primarily from the effects of solar radiation upon the comet's nucleus, which itself is a minor body composed of rock, dust, and
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Kuiper belt (pronounced IPA: /ˈkaɪpɚ/, to rhyme with "viper"),[1] sometimes called the Edgeworth-Kuiper belt
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scattered disc (or scattered disk) is a distant region of our Solar System, thinly populated by icy minor planets known as scattered disc objects (SDOs), a subset of the broader family of trans-Neptunian objects (TNOs).
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Oort cloud (ort, IPA: /ɔrt/, alternatively the Öpik-Oort Cloud (/ˈøpɪk/: as
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An asteroid moon is an asteroid that orbits another asteroid as its natural satellite. It is thought that many asteroids may possess moons, in some cases quite substantial in size.
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meteoroid is a small sand to boulder-sized particle of debris in the Solar system. The visible path of a meteoroid that enters Earth's (or another body's) atmosphere is a meteor, commonly called a "shooting star" or "falling star". Many meteors are part of a meteor shower.
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Solar System or solar system[a] consists of the Sun and the other celestial objects gravitationally bound to it: the eight planets, their 166 known moons,[1]
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This is a list of numbered minor planets, nearly all of them asteroids, in sequential order.
As of late September 2007 there are 164,612 numbered minor planets, and many more not yet numbered. Most asteroids are ordinary and not particularly noteworthy.
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As of late September 2007 there are 164,612 numbered minor planets, and many more not yet numbered. Most asteroids are ordinary and not particularly noteworthy.
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: Top - 0–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Name Pronunciation Source Adjective Pronunciation
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List of first 1000 asteroids
- Pronunciation key
A
Name Pronunciation Source Adjective Pronunciation
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This is a list of named asteroids, with links to the Wikipedia articles on the people, places, characters and concepts that they are named after.
1–500 5001–5500 10001–11000 20001–21000 30001–31000 40001–41000
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1–500 5001–5500 10001–11000 20001–21000 30001–31000 40001–41000
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