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21900 Orus

Index 21900 Orus

21900 Orus, provisional designation, is a Jupiter trojan from the Greek camp, approximately in diameter, and a target of the ''Lucy'' mission to be visited in November 2028. [1]

53 relations: Absolute magnitude, Achaeans (Homer), Akari (satellite), Albedo, Asteroid, Asteroid family, Asteroid spectral types, Astronomical unit, Ōizumi Observatory, Binary asteroid, C-type asteroid, Calar Alto Observatory, D-type asteroid, Degree (angle), Digitized Sky Survey, Discovery Program, Ecliptic, Greek mythology, Hector, Iliad, Jet Propulsion Laboratory, Julian day, Julian year (astronomy), Jupiter trojan, Lagrangian point, Light curve, List of Jupiter trojans (Greek camp), List of Jupiter trojans (Trojan camp), List of minor planet discoverers, List of slow rotators (minor planets), Lucy (spacecraft), Magnitude (astronomy), Minor planet, Minor Planet Center, Observation arc, Orbital eccentricity, Orbital inclination, Orbital resonance, Palomar Observatory, Pan-STARRS, Precovery, Rotation period, Semi-major and semi-minor axes, Takao Kobayashi, Trojan (astronomy), Trojan War, Wide-field Infrared Survey Explorer, 11351 Leucus, 15094 Polymele, 3548 Eurybates, ..., 52246 Donaldjohanson, 617 Patroclus, 624 Hektor. Expand index (3 more) »

Absolute magnitude

Absolute magnitude is a measure of the luminosity of a celestial object, on a logarithmic astronomical magnitude scale.

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Achaeans (Homer)

The Achaeans (Ἀχαιοί Akhaioí, "the Achaeans" or "of Achaea") constitute one of the collective names for the Greeks in Homer's Iliad (used 598 times) and Odyssey.

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Akari (satellite)

Akari (ASTRO-F) is an infrared astronomy satellite developed by Japan Aerospace Exploration Agency, in cooperation with institutes of Europe and Korea.

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Albedo

Albedo (albedo, meaning "whiteness") is the measure of the diffuse reflection of solar radiation out of the total solar radiation received by an astronomical body (e.g. a planet like Earth).

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Asteroid

Asteroids are minor planets, especially those of the inner Solar System.

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Asteroid family

An asteroid family is a population of asteroids that share similar proper orbital elements, such as semimajor axis, eccentricity, and orbital inclination.

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Asteroid spectral types

An asteroid spectral type is assigned to asteroids based on their emission spectrum, color, and sometimes albedo (reflectivity).

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Astronomical unit

The astronomical unit (symbol: au, ua, or AU) is a unit of length, roughly the distance from Earth to the Sun.

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Ōizumi Observatory

Ōizumi Observatory (obs. code: 411) is a private astronomical observatory in Ōizumi, Gunma Prefecture, Japan.

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Binary asteroid

A binary asteroid is a system of two asteroids orbiting their common barycenter.

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C-type asteroid

C-type (carbonaceous) asteroids are the most common variety, forming around 75% of known asteroids.

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Calar Alto Observatory

The Calar Alto Observatory (Centro Astronómico Hispano-Alemán or Deutsch-Spanisches Astronomisches Zentrum, respectively "Spanish–German Astronomical Centre" and "German–Spanish Astronomical Centre") is an astronomical observatory located in Almería province in Spain on Calar Alto, a mountain in the Sierra de Los Filabres range.

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D-type asteroid

D-type asteroids have a very low albedo and a featureless reddish spectrum.

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Degree (angle)

A degree (in full, a degree of arc, arc degree, or arcdegree), usually denoted by ° (the degree symbol), is a measurement of a plane angle, defined so that a full rotation is 360 degrees.

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Digitized Sky Survey

The Digitized Sky Survey (DSS) is a digital version of several photographic atlases of the night sky, and an ongoing project to produce more digital versions of photographic astronomical datasets.

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Discovery Program

NASA's Discovery Program is a series of lower-cost (as compared to New Frontiers or Flagship Programs), highly focused American scientific space missions that are exploring the Solar System.

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Ecliptic

The ecliptic is the circular path on the celestial sphere that the Sun follows over the course of a year; it is the basis of the ecliptic coordinate system.

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Greek mythology

Greek mythology is the body of myths and teachings that belong to the ancient Greeks, concerning their gods and heroes, the nature of the world, and the origins and significance of their own cult and ritual practices.

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Hector

In Greek mythology and Roman mythology, Hector (Ἕκτωρ Hektōr) was a Trojan prince and the greatest fighter for Troy in the Trojan War.

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Iliad

The Iliad (Ἰλιάς, in Classical Attic; sometimes referred to as the Song of Ilion or Song of Ilium) is an ancient Greek epic poem in dactylic hexameter, traditionally attributed to Homer.

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Jet Propulsion Laboratory

The Jet Propulsion Laboratory (JPL) is a federally funded research and development center and NASA field center in Pasadena, California, United States, with large portions of the campus in La Cañada Flintridge, California.

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Julian day

Julian day is the continuous count of days since the beginning of the Julian Period and is used primarily by astronomers.

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Julian year (astronomy)

In astronomy, a Julian year (symbol: a) is a unit of measurement of time defined as exactly 365.25 days of SI seconds each.

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Jupiter trojan

The Jupiter trojans, commonly called Trojan asteroids or just Trojans, are a large group of asteroids that share the planet Jupiter's orbit around the Sun.

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Lagrangian point

In celestial mechanics, the Lagrangian points (also Lagrange points, L-points, or libration points) are positions in an orbital configuration of two large bodies, wherein a small object, affected only by the gravitational forces from the two larger objects, will maintain its position relative to them.

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Light curve

In astronomy, a light curve is a graph of light intensity of a celestial object or region, as a function of time.

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List of Jupiter trojans (Greek camp)

This is a list of Jupiter trojans that lie in the Greek camp, an elongated, curved region around the leading Lagrangian point, 60° ahead of Jupiter's orbit.

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List of Jupiter trojans (Trojan camp)

This is a list of Jupiter trojans that lie in the Trojan camp, an elongated, curved region around the trailing Lagrangian point 60° behind Jupiter.

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List of minor planet discoverers

This is a list of all astronomers who are credited by the Minor Planet Center (MPC) with the discovery of one or several minor planets.

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List of slow rotators (minor planets)

This is a list of slow rotators—minor planets that have an exceptionally long rotation period.

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Lucy (spacecraft)

Lucy is a planned NASA space probe that will tour five Jupiter trojans, asteroids which share Jupiter's orbit around the Sun, orbiting either ahead of or behind the planet.

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Magnitude (astronomy)

In astronomy, magnitude is a logarithmic measure of the brightness of an object in a defined passband, often in the visible or infrared spectrum, but sometimes across all wavelengths.

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Minor planet

A minor planet is an astronomical object in direct orbit around the Sun (or more broadly, any star with a planetary system) that is neither a planet nor exclusively classified as a comet.

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Minor Planet Center

The Minor Planet Center (MPC) is the official worldwide organization in charge of collecting observational data for minor planets (such as asteroids and comets), calculating their orbits and publishing this information via the Minor Planet Circulars.

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Observation arc

In observational astronomy, an observation arc (or arc length) is the time period between the first and most recent (last) observation, tracing the body's path.

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Orbital eccentricity

The orbital eccentricity of an astronomical object is a parameter that determines the amount by which its orbit around another body deviates from a perfect circle.

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Orbital inclination

Orbital inclination measures the tilt of an object's orbit around a celestial body.

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Orbital resonance

In celestial mechanics, an orbital resonance occurs when orbiting bodies exert a regular, periodic gravitational influence on each other, usually because their orbital periods are related by a ratio of small integers.

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Palomar Observatory

Palomar Observatory is an astronomical observatory located in San Diego County, California, United States, southeast of Los Angeles, California, in the Palomar Mountain Range.

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Pan-STARRS

The Panoramic Survey Telescope and Rapid Response System (Pan-STARRS 1; obs. code: F51 and Pan-STARRS 2 obs. code: F52) located at Haleakala Observatory, Hawaii, USA, consists of astronomical cameras, telescopes and a computing facility that is surveying the sky for moving or variable objects on a continual basis, and also producing accurate astrometry and photometry of already detected objects.

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Precovery

In astronomy, precovery (short for pre-discovery recovery) is the process of finding the image of an object in old archived images or photographic plates for the purpose of calculating a more accurate orbit.

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Rotation period

In astronomy, the rotation period of a celestial object is the time that it takes to complete one revolution around its axis of rotation relative to the background stars.

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Semi-major and semi-minor axes

In geometry, the major axis of an ellipse is its longest diameter: a line segment that runs through the center and both foci, with ends at the widest points of the perimeter.

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Takao Kobayashi

is a Japanese amateur astronomer and an outstanding discoverer of minor planets who currently works at the Ōizumi Observatory.

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Trojan (astronomy)

In astronomy, a trojan is a minor planet or moon that shares the orbit of a planet or larger moon, wherein the trojan remains in the same, stable position relative to the larger object.

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Trojan War

In Greek mythology, the Trojan War was waged against the city of Troy by the Achaeans (Greeks) after Paris of Troy took Helen from her husband Menelaus, king of Sparta.

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Wide-field Infrared Survey Explorer

Wide-field Infrared Survey Explorer (WISE) is a NASA infrared-wavelength astronomical space telescope launched in December 2009, and placed in hibernation in February 2011.

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11351 Leucus

11351 Leucus, provisional designation, is a mid-sized Jupiter trojan from the Greek camp, approximately in diameter.

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15094 Polymele

15094 Polymele, provisional designation, is a primitive Jupiter trojan from the Greek camp, approximately in diameter.

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3548 Eurybates

3548 Eurybates, provisional designation, is a carbonaceous Jupiter trojan from the Greek camp and the parent body of the Eurybates family, approximately in diameter.

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52246 Donaldjohanson

52246 Donaldjohanson, provisional designation, is a carbonaceous Erigonian asteroid from the inner regions of the asteroid belt, approximately in diameter.

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617 Patroclus

617 Patroclus, provisional designation is a binary Jupiter trojan approximately in diameter.

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624 Hektor

624 Hektor is the largest Jupiter trojan and the namesake of the Hektor family, with a highly elongated shape equivalent in volume to a sphere of approximately 225 to 250 kilometers diameter. It was discovered on 10 February 1907, by astronomer August Kopff at Heidelberg Observatory in southwest Germany, and named after the Trojan prince Hector, from Greek mythology. It has one small 12-kilometer sized satellite, Skamandrios, discovered in 2006.

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Redirects here:

(21900) 1999 VQ10, 21900 Oros.

References

[1] https://en.wikipedia.org/wiki/21900_Orus

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