90482 Orcus

90482 Orcus (originally known by the provisional designation 2004 DW) is a Kuiper Belt object (KBO) that was discovered by Michael Brown of Caltech, Chad Trujillo of the Gemini Observatory, and David Rabinowitz of Yale University. The discovery images of this object were acquired on February 17, 2004. Precovery images as early as November 8, 1951 were later identified. 90482 Orcus - Size and magnitude. The apparent magnitude of the object is 18.5, which is the same brightness as 50000 Quaoar. ...

Including:

• 90482 Orcus - Size and magnitude
• 90482 Orcus - Name

Read more here: » 90482 Orcus: Encyclopedia - 90482 Orcus

1 Ceres ([ˈsi.riz], Latin Cerēs) was the first asteroid to be discovered. It was discovered on January 1, 1801, by Giuseppe Piazzi. With a diameter of about 950 km it is by far the largest and most massive asteroid in the asteroid belt: It is over half as massive as the rest of the belt put together. 1 Ceres - Name. Ceres was originally named Ceres Ferdinandea after both the mythological figure Ceres (Roman goddess of plants and motherly ...

Including:

• 1 Ceres - Name
• 1 Ceres - Discovery
• 1 Ceres - Physical characteristics
• 1 Ceres - Observations
• 1 Ceres - Trivia
• 1 Ceres - Aspects
• 1 Ceres - External link

Read more here: » 1 Ceres: Encyclopedia - 1 Ceres

Chadwick A. "Chad" Trujillo (born November 22, 1973), is the co-discoverer of 2003 UB313, which he claims to be the Tenth Planet. Trujillo works with computer software and has examined the orbits of the numerous trans-Neptunian objects (TNOs), which is the outer area of the solar system that he specialized in. In late August, 2005, it was announced that Trujillo, along with with Michael E. Brown and David L. Rabinowitz), had discovered 2003 UB313. This was the first TNO known to be larger than the planet Pluto. ...

Including:

• Chad Trujillo - Early career
• Chad Trujillo - List of discoveries

Read more here: » Chad Trujillo: Encyclopedia - Chad Trujillo

The 23rd century (Gregorian Calendar) comprises the years 2201-2300. 23rd century - Astronomical predictions for the 23rd century. In the early 23rd century Pluto will switch ranking with Neptune and temporarily, for about 20 years, will become the 8th planet from the Sun. The last time this has occurred is from 1979-1999. Based upon current orbital measurements which gives it a period of 286 Earth years, in 2288, the planetoid 50000 Quaoar will have completed one orbit of the Sun since its d ...

Including:

• 23rd century - Astronomical predictions for the 23rd century
• 23rd century - Millennial Anniversary
• 23rd century - Quincentennials
• 23rd century - Religious Predictions
• 23rd century - Science fiction set in the 23rd century
• 23rd century - Literature
• 23rd century - Television and film
• 23rd century - Computer games
• 23rd century - Arcade and console games
• 23rd century - Decades and years

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Pluto is the ninth planet in the solar system. Discovered in 1930 and immediately classified as a planet, its status is currently under dispute. Pluto has an eccentric orbit that is highly inclined in respect to the other planets and takes it inside the orbit of Neptune. Its largest moon is Charon, discovered in 1978; two smaller moons were discovered in 2005. Pluto's astronomical symbol is a P-L monogram, ♇. This represents both the first two letters of the name Pluto and the initials of Percival Lowell ...

Including:

• Pluto - Discovery and naming
• Pluto - Orbit
• Pluto - Physical characteristics
• Pluto - Mass and size
• Pluto - Atmosphere
• Pluto - Appearance
• Pluto - Pluto's moons
• Pluto - Charon
• Pluto - The outer moons
• Pluto - Exploration of Pluto
• Pluto - The Pluto debate
• Pluto - Planet X?
• Pluto - Minor planet?
• Pluto - New discoveries
• Pluto - Pluto in popular culture

Read more here: » Pluto: Encyclopedia - Pluto

A planet is generally considered to be a relatively large mass of accreted matter in orbit around a star that is not a star itself. The name comes from the Greek term πλανήτης, planētēs, meaning "wanderer", as ancient astronomers noted how certain lights moved across the sky in relation to the other stars. Based on historical consensus, the International Astronomical Union (IAU) lists nine planets in our solar system. Since the term "planet" has no precise scientific definition, however, many astronomers contest that ...

Including:

• Planet - Planetary formation
• Planet - Within our solar system
• Planet - Accepted planets
• Planet - Other candidates
• Planet - Extrasolar planets
• Planet - Brown dwarf planets
• Planet - Interstellar planets
• Planet - Definition and classification of planets
• Planet - Suggested wide definitions
• Planet - Suggested narrow definitions
• Planet - Further classification

Read more here: » Planet: Encyclopedia - Planet

David Lincoln Rabinowitz (born 1960) is a researcher at Yale University studying the Kuiper belt and the outer solar system. Along with Michael E. Brown and Chad Trujillo he has discovered trans-Neptunian objects, among them: 90377 Sedna - possibly the first known inner Oort cloud object. 90482 Orcus 2003 UB313 - probably larger than Pluto

Read more here: » David L. Rabinowitz: Encyclopedia - David L. Rabinowitz

2003 EL61 (also written 2003 EL61), nicknamed "Santa" (non-official designation), is a very large and unusual Kuiper belt object recently discovered by Mike Brown et al. at Caltech in the United States. The nickname stems from its discovery just after Christmas, on December 28, 2004, although the Caltech team had acquired images of it starting May 6, 2004. The nickname is only temporary and will not be the official name of the object. IAU guidelines dictate that the object will be named after a c ...

Including:

• 2003 EL61 - Discovery controversy
• 2003 EL61 - Size and composition
• 2003 EL61 - Orbit
• 2003 EL61 - Moons
• 2003 EL61 - S/2005 2003 EL₆₁ 1
• 2003 EL61 - S/2005 2003 EL₆₁ 2

Read more here: » 2003 EL61: Encyclopedia - 2003 EL61

2003 UB313 (center) and moon (right of center). Keck Observatory. 2003 UB313 is a trans-Neptunian object (TNO) which California astronomers at Mount Palomar observatory describe as "definitely bigger" than the planet Pluto. The object has already been dubbed the tenth planet by the discoverers, NASA, and some media outlets, but it is not yet clear whether it will be widely accepted as a new planet or not. It has at least one moon. No official name for ...

Including:

• 2003 UB313 - Discovery
• 2003 UB313 - Classification
• 2003 UB313 - Name
• 2003 UB313 - Orbit
• 2003 UB313 - Size
• 2003 UB313 - Surface
• 2003 UB313 - Moon

Read more here: » 2003 UB313: Encyclopedia - 2003 UB313

Most moons in the solar system are tidally locked to their primaries, meaning that one side of the moon is always turned toward the planet. Exceptions are Saturn's moon Hyperion, which rotates chaotically due to a variety of external influences, and the outermost moons of the gas giants, which are too far away to become 'locked' (an example is Saturn's moon Phoebe). It is not possible for a moon to have moons of its own: the tidal effects of their primaries would make such a system unstable. However, several moons have small companions in the Lagrangian po ...

See also:

Natural satellite, Natural satellite - Origin, Natural satellite - Orbital characteristics, Natural satellite - Moons of the Solar system

Read more here: » Natural satellite: Encyclopedia II - Natural satellite - Orbital characteristics

Much like "continent", "planet" is a word without a precise definition, with history and culture playing as much of a role as geology and astrophysics. Recent definitions have been vague and imprecise; The American Heritage Dictionary, for instance, formerly defined a planet as: A nonluminous celestial body larger than an asteroid or comet, illuminated by light from a star, such as the Sun, around which it revolves. In the solar system there are nine known planets: Mercury, Venus, Ea ...

See also:

Planet, Planet - Planetary formation, Planet - Within our solar system, Planet - Accepted planets, Planet - Other candidates, Planet - Extrasolar planets, Planet - Brown dwarf planets, Planet - Interstellar planets, Planet - Definition and classification of planets, Planet - Suggested wide definitions, Planet - Suggested narrow definitions, Planet - Further classification

Read more here: » Planet: Encyclopedia II - Planet - Definition and classification of planets

José Luis Ortiz Moreno, an astronomer at the Sierra Nevada Observatory in Spain, and colleagues Francisco José Aceituno Castro and Pablo Santos-Sanz announced the discovery of the object on July 25, 2005, when they re-analysed observations they had made on March 7, 2003. They then scoured older archives (a process known as precovery) and found the object in images dating back to 1955. Ortiz's group announced their discovery on July 27, 20 ...

See also:

2003 EL61, 2003 EL61 - Discovery controversy, 2003 EL61 - Size and composition, 2003 EL61 - Orbit, 2003 EL61 - Moons, 2003 EL61 - S/2005 2003 EL₆₁ 1, 2003 EL61 - S/2005 2003 EL₆₁ 2

Read more here: » 2003 EL61: Encyclopedia II - 2003 EL61 - Discovery controversy

Trujillo was a postdoctoral scholar at Caltech, and is currently an astronomer at the Gemini Observatory in Hawaii [1]. He studies the Kuiper belt and the outer solar system. He received his B.Sc. in physics from the Massachusetts Institute of Technology in 1995 and was a member of the Xi chapter of Tau Epsilon Phi. Trujillo received his Ph.D. in astronomy from the University of Hawaii in 2000. ...

See also:

Chad Trujillo, Chad Trujillo - Early career, Chad Trujillo - List of discoveries

Read more here: » Chad Trujillo: Encyclopedia II - Chad Trujillo - Early career

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February 2004, February 2004 - Events, February 2004 - February 29 2004, February 2004 - February 28 2004, February 2004 - February 27 2004, February 2004 - February 26 2004, February 2004 - February 25 2004, February 2004 - February 24 2004, February 2004 - February 23 2004, February 2004 - February 22 2004, February 2004 - February 21 2004, February 2004 - February 20 2004, February 2004 - February 19 2004, February 2004 - February 18 2004, February 2004 - February 17 2004, February 2004 - February 16 2004, February 2004 - February 15 2004, February 2004 - February 14 2004, February 2004 - February 13 2004, February 2004 - February 12 2004, February 2004 - February 11 2004, February 2004 - February 10 2004, February 2004 - February 9 2004, February 2004 - February 8 2004, February 2004 - February 7 2004, February 2004 - February 6 2004, February 2004 - February 5 2004, February 2004 - February 4 2004, February 2004 - February 3 2004, February 2004 - February 2 2004, February 2004 - February 1 2004, February 2004 - Events by month

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2003 UB313 was discovered by the team of Michael Brown, Chad Trujillo, and David Rabinowitz on January 5, 2005 from images taken on October 21, 2003, and the discovery was announced on July 29, 2005, the same day as two other large TNOs, 2003 EL61 and 2005 FY9. The search team has been systematically scanning for large outer solar system bodies for several years, and had previously been involved in the discovery of several other very large trans-Neptunian objects, including 500 ...

See also:

2003 UB313, 2003 UB313 - Discovery, 2003 UB313 - Classification, 2003 UB313 - Name, 2003 UB313 - Orbit, 2003 UB313 - Size, 2003 UB313 - Surface, 2003 UB313 - Moon

Read more here: » 2003 UB313: Encyclopedia II - 2003 UB313 - Discovery

23rd century - Literature. The Fortunate Fall, a novel by Raphael Carter The Glass Bead Game, a novel by Hermann Hesse Satellite Night trilogy, by Nick Pollotta 23rd century - Television and film. James T. Kirk, born on March 22, 2233. Star Trek: The Original Series (pilots circa 2254 and 2265, series circa 2266-2269) Star Trek: The Animated Series Star Trek: The Motion ...

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23rd century, 23rd century - Astronomical predictions for the 23rd century, 23rd century - Millennial Anniversary, 23rd century - Quincentennials, 23rd century - Religious Predictions, 23rd century - Science fiction set in the 23rd century, 23rd century - Literature, 23rd century - Television and film, 23rd century - Computer games, 23rd century - Arcade and console games, 23rd century - Decades and years

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23rd century - Literature. The Fortunate Fall, a novel by Raphael Carter The Glass Bead Game, a novel by Hermann Hesse Satellite Night trilogy, by Nick Pollotta 23rd century - Television and film. James Tiberius Kirk, born on March 22, 2233. Star Trek: The Original Series (pilots circa 2254 and 2265, series circa 2266-2269) Star Trek: The Animated Series Star Trek: The ...

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23rd century, 23rd century - Astronomical predictions for the 23rd century, 23rd century - Millennial Anniversary, 23rd century - Quincentennials, 23rd century - Religious Predictions, 23rd century - Science fiction set in the 23rd century, 23rd century - Literature, 23rd century - Television and film, 23rd century - Computer games, 23rd century - Arcade and console games, 23rd century - Decades and years

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23rd century - Literature. The Fortunate Fall, a novel by Raphael Carter The Glass Bead Game, a novel by Hermann Hesse Satellite Night trilogy, by Nick Pollotta 23rd century - Television and film. James Tiberius Kirk, born on March 22, 2233. Star Trek: The Original Series (pilots circa 2254 and 2265, series circa 2266-2269) Star Trek: The Animated Series Star Trek: The ...

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23rd century, 23rd century - Astronomical predictions for the 23rd century, 23rd century - Millennial Anniversary, 23rd century - Quincentennials, 23rd century - Religious Predictions, 23rd century - Science fiction set in the 23rd century, 23rd century - Literature, 23rd century - Television and film, 23rd century - Games, 23rd century - Decades and years

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Ceres was discovered by accident. Piazzi was searching for a star listed by Francis Wollaston as Mayer 87 because it was not in Mayer's zodiacal catalogue in the position given (it eventually transpired that Wollaston had made a mistake —the star was in fact Lacaille 87). Instead, Piazzi found a moving star-like object, which he thought at first was a comet. Piazzi observed Ceres a total of 24 times, the final time on February 11, when illness interrupted. On 24 January 1801, Piazzi announced his discovery in letters to fellow astro ...

See also:

1 Ceres, 1 Ceres - Name, 1 Ceres - Discovery, 1 Ceres - Physical characteristics, 1 Ceres - Observations, 1 Ceres - Trivia, 1 Ceres - Aspects, 1 Ceres - External link

Read more here: » 1 Ceres: Encyclopedia II - 1 Ceres - Discovery

Pluto - Planet X?. The planet Pluto was originally discovered in 1930 in the course of a search for a body sufficiently massive to account for supposed anomalies in the orbits of Uranus and Neptune . Once it was found, its faintness and failure to show a visible disc cast doubt on the idea that it could be Lowell's Planet X. Lowell had made a prediction of Pluto's position in 1915 which had turned out to be fairly close to its actual position at that time; however Ernest W. Brown concluded almost immediately that ...

See also:

Pluto, Pluto - Discovery and naming, Pluto - Orbit, Pluto - Physical characteristics, Pluto - Mass and size, Pluto - Atmosphere, Pluto - Appearance, Pluto - Pluto's moons, Pluto - Charon, Pluto - The outer moons, Pluto - Exploration of Pluto, Pluto - The Pluto debate, Pluto - Planet X?, Pluto - Minor planet?, Pluto - New discoveries, Pluto - Pluto in popular culture

Read more here: » Pluto: Encyclopedia II - Pluto - The Pluto debate