81 relations: Albedo, Apsis, Asteroid, Asteroid belt, Asteroid spectral types, Astronomical unit, B-type asteroid, C-type asteroid, Carbon monoxide, Celestia, Centaur, Centaur (minor planet), Charles T. Kowal, Charon (moon), Chiron, Coma (cometary), Comet, Comet nucleus, Cyanide, Degree (angle), Distant minor planet, Dwarf planet, Ecliptic coordinate system, Greek mythology, Guinness Book of Astronomy, Halley's Comet, Haumea, Herschel Space Observatory, Hour, Hydrostatic equilibrium, IAU Circular, Icarus (journal), Infrared, IRAS, Julian day, Julian year (astronomy), Jupiter, Kuiper belt, Light curve, List of possible dwarf planets, Magnitude (astronomy), Michael E. Brown, Minor planet, Minor Planet Center, Monthly Notices of the Royal Astronomical Society, Neptune, Orbit, Orbital eccentricity, Outer planets, Palomar Observatory, ..., Patrick Moore, Perihelion and aphelion, Perturbation (astronomy), Pluto, Precovery, Ring system, Rings of Chariklo, Roche limit, Rotation period, Saturn, Semi-major and semi-minor axes, Solar System, Spitzer Space Telescope, Sun, The Astronomical Journal, The Planetary Society, Tisserand's parameter, Trans-Neptunian object, Uranus, Water, 10199 Chariklo, 118401 LINEAR, 165P/LINEAR, 166P/NEAT, 167P/CINEOS, 39P/Oterma, 4015 Wilson–Harrington, 52872 Okyrhoe, 60558 Echeclus, 7968 Elst–Pizarro, 944 Hidalgo. Expand index (31 more) » « Shrink index
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).
An apsis (ἁψίς; plural apsides, Greek: ἁψῖδες) is an extreme point in the orbit of an object.
Asteroids are minor planets, especially those of the inner Solar System.
The asteroid belt is the circumstellar disc in the Solar System located roughly between the orbits of the planets Mars and Jupiter.
An asteroid spectral type is assigned to asteroids based on their emission spectrum, color, and sometimes albedo (reflectivity).
The astronomical unit (symbol: au, ua, or AU) is a unit of length, roughly the distance from Earth to the Sun.
B-type asteroids are a relatively uncommon type of carbonaceous asteroid, falling into the wider C-group.
C-type (carbonaceous) asteroids are the most common variety, forming around 75% of known asteroids.
Carbon monoxide (CO) is a colorless, odorless, and tasteless gas that is slightly less dense than air.
Celestia is a 3D astronomy program created by Chris Laurel.
A centaur (Κένταυρος, Kéntauros), or occasionally hippocentaur, is a mythological creature with the upper body of a human and the lower body and legs of a horse.
Centaurs are small solar system bodies with a semi-major axis between those of the outer planets.
Charles Thomas Kowal (November 8, 1940 – November 28, 2011) was an American astronomer known for his observations and discoveries in the Solar System.
Charon, also known as (134340) Pluto I, is the largest of the five known natural satellites of the dwarf planet Pluto.
In Greek mythology, Chiron (also Cheiron or Kheiron; Χείρων "hand") was held to be the superlative centaur amongst his brethren, as he was called as the "wisest and justest of all the centaurs".
The coma is the nebulous envelope around the nucleus of a comet, formed when the comet passes close to the Sun on its highly elliptical orbit; as the comet warms, parts of it sublime.
A comet is an icy small Solar System body that, when passing close to the Sun, warms and begins to release gases, a process called outgassing.
The nucleus is the solid, central part of a comet, popularly termed a dirty snowball or an icy dirtball.
A cyanide is a chemical compound that contains the group C≡N.
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.
The term distant minor planet is used by the International Astronomical Union's Minor Planet Center to refer collectively to those minor planets found in the outer Solar System that are not commonly thought of as "asteroids".
A dwarf planet is a planetary-mass object that is neither a planet nor a natural satellite.
The ecliptic coordinate system is a celestial coordinate system commonly used for representing the apparent positions and orbits of Solar System objects.
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.
The Guinness Book of Astronomy is a book by the British astronomer Patrick Moore, first published in 1979, and running to seven editions.
Halley's Comet or Comet Halley, officially designated 1P/Halley, is a short-period comet visible from Earth every 74–79 years.
Haumea, minor-planet designation 136108 Haumea, is a dwarf planet located beyond Neptune's orbit.
The Herschel Space Observatory was a space observatory built and operated by the European Space Agency (ESA).
An hour (symbol: h; also abbreviated hr.) is a unit of time conventionally reckoned as of a day and scientifically reckoned as 3,599–3,601 seconds, depending on conditions.
In fluid mechanics, a fluid is said to be in hydrostatic equilibrium or hydrostatic balance when it is at rest, or when the flow velocity at each point is constant over time.
The International Astronomical Union Circulars (IAUCs) are notices that give information about astronomical phenomena.
Icarus is a scientific journal dedicated to the field of planetary science.
Infrared radiation (IR) is electromagnetic radiation (EMR) with longer wavelengths than those of visible light, and is therefore generally invisible to the human eye (although IR at wavelengths up to 1050 nm from specially pulsed lasers can be seen by humans under certain conditions). It is sometimes called infrared light.
The Infrared Astronomical Satellite (IRAS) was the first-ever space telescope to perform a survey of the entire night sky at infrared wavelengths.
Julian day is the continuous count of days since the beginning of the Julian Period and is used primarily by astronomers.
In astronomy, a Julian year (symbol: a) is a unit of measurement of time defined as exactly 365.25 days of SI seconds each.
Jupiter is the fifth planet from the Sun and the largest in the Solar System.
The Kuiper belt, occasionally called the Edgeworth–Kuiper belt, is a circumstellar disc in the outer Solar System, extending from the orbit of Neptune (at 30 AU) to approximately 50 AU from the Sun.
In astronomy, a light curve is a graph of light intensity of a celestial object or region, as a function of time.
It is estimated that there may be 200 dwarf planets in the Kuiper belt of the outer Solar System and possibly more than 10,000 in the region beyond.
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.
Michael E. Brown (born June 5, 1965) is an American astronomer, who has been professor of planetary astronomy at the California Institute of Technology (Caltech) since 2003.
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.
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.
Monthly Notices of the Royal Astronomical Society (MNRAS) is a peer-reviewed scientific journal covering research in astronomy and astrophysics.
Neptune is the eighth and farthest known planet from the Sun in the Solar System.
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.
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.
The outer planets are those planets in the Solar System beyond the asteroid belt, and hence refers to the gas giants and ice giants, which are in order of their distance from the Sun.
Palomar Observatory is an astronomical observatory located in San Diego County, California, United States, southeast of Los Angeles, California, in the Palomar Mountain Range.
Sir Patrick Alfred Caldwell-Moore (4 March 19239 December 2012) was an English amateur astronomer who attained prominent status in that field as a writer, researcher, radio commentator and television presenter.
The perihelion of any orbit of a celestial body about the Sun is the point where the body comes nearest to the Sun.
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.
Pluto (minor planet designation: 134340 Pluto) is a dwarf planet in the Kuiper belt, a ring of bodies beyond Neptune.
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.
A ring system is a disc or ring orbiting an astronomical object that is composed of solid material such as dust and moonlets, and is a common component of satellite systems around giant planets.
The minor planet and centaur 10199 Chariklo, with a diameter of about, is the second smallest object with rings and the sixth ringed object ever discovered in the Solar System.
In celestial mechanics, the Roche limit, also called Roche radius, is the distance in which a celestial body, held together only by its own gravity, will disintegrate due to a second celestial body's tidal forces exceeding the first body's gravitational self-attraction.
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.
Saturn is the sixth planet from the Sun and the second-largest in the Solar System, after Jupiter.
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.
The Solar SystemCapitalization of the name varies.
The Spitzer Space Telescope (SST), formerly the Space Infrared Telescope Facility (SIRTF), is an infrared space telescope launched in 2003 and still operating as of 2018.
The Sun is the star at the center of the Solar System.
The Astronomical Journal (often abbreviated AJ in scientific papers and references) is a peer-reviewed monthly scientific journal owned by the American Astronomical Society and currently published by IOP Publishing.
The Planetary Society is an American internationally active, non-governmental, nonprofit foundation.
Tisserand's parameter (or Tisserand's invariant) is a value calculated from several orbital elements (semi-major axis, orbital eccentricity and inclination) of a relatively small object and a larger "perturbing body".
A trans-Neptunian object (TNO, also written transneptunian object) is any minor planet in the Solar System that orbits the Sun at a greater average distance (semi-major axis) than Neptune, 30 astronomical units (AU).
Uranus is the seventh planet from the Sun.
Water is a transparent, tasteless, odorless, and nearly colorless chemical substance that is the main constituent of Earth's streams, lakes, and oceans, and the fluids of most living organisms.
10199 Chariklo (or; Χαρικλώ; provisional designation) is the largest confirmed centaur (minor planet of the outer Solar System).
118401 LINEAR, provisional designation, is an asteroid and main-belt comet (176P/LINEAR) that was discovered by the Lincoln Near-Earth Asteroid Research (LINEAR) 1-metre telescopes in Socorro, New Mexico on September 7, 1999.
165P/LINEAR is a periodic comet in the solar system.
166P/NEAT is a periodic comet and centaur in the outer Solar System.
167P/CINEOS is a periodic comet in the solar system.
39P/Oterma is a currently inactive periodic comet in the Solar System with an orbital period of nearly 20 years.
4015 Wilson–Harrington is a small Solar System body known both as Comet Wilson–Harrington or 107P/Wilson–Harrington, and as an asteroid designated 4015 Wilson–Harrington.
52872 Okyrhoe (from Greek Ωκυρόη, Ωκυρρόη), provisional designation, is a centaur orbiting in the outer Solar System between Jupiter and Saturn.
60558 Echeclus is a centaur in the outer Solar System.
Comet Elst–Pizarro is a body that displays characteristics of both asteroids and comets, and is the prototype of main-belt comets.
944 Hidalgo is a dark and eccentric minor planet from the outer Solar System, approximately 50 kilometers in diameter.