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20 relations: Aethra (Greek mythology), Asteroid, Asteroid belt, Degree (angle), Greek mythology, James Craig Watson, Julian day, Julian year (astronomy), Light curve, List of Mars-crossing minor planets, Lost minor planet, M-type asteroid, Mars, Orbit, Orbital eccentricity, Perturbation (astronomy), Planet, Proper orbital elements, Sun, Theseus.
Aethra (Greek mythology)
In Greek mythology, Aethra or Aithra (Αἴθρα, Aἴthra,,, the "bright sky") was a name applied to four different individuals.
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Asteroid
Asteroids are minor planets, especially those of the inner Solar System.
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Asteroid belt
The asteroid belt is the circumstellar disc in the Solar System located roughly between the orbits of the planets Mars and Jupiter.
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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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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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James Craig Watson
James Craig Watson (January 28, 1838 – November 22, 1880) was a Canadian-American astronomer, discoverer of comets and minor planets, director of the Ann Arbor Observatory, and awarded with the Lalande Prize in 1869.
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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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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 Mars-crossing minor planets
A Mars-crossing asteroid (MCA, also Mars-crosser, MC) is an asteroid whose orbit crosses that of Mars.
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Lost minor planet
Lost minor planets are minor planets that observers lose track of due to too short an observation arc to accurately predict the future location of the minor planet.
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M-type asteroid
M-type asteroids are asteroids of partially known composition; they are moderately bright (albedo 0.1–0.2).
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Mars
Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System after Mercury.
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Orbit
In physics, an orbit is the gravitationally curved trajectory of an object, such as the trajectory of a planet around a star or a natural satellite around a planet.
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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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Perturbation (astronomy)
In astronomy, perturbation is the complex motion of a massive body subject to forces other than the gravitational attraction of a single other massive body.
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Planet
A planet is an astronomical body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.
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Proper orbital elements
The proper orbital elements of an orbit are constants of motion of an object in space that remain practically unchanged over an astronomically long timescale.
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Sun
The Sun is the star at the center of the Solar System.
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Theseus
Theseus (Θησεύς) was the mythical king and founder-hero of Athens.
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