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95 relations: Accretion disk, Angle, Angular momentum, Apparent retrograde motion, Artificial satellites in retrograde orbit, Asteroid, Asteroid belt, Asteroid capture, Axial tilt, Celestial equator, Charon (moon), Clockwise, Collisional family, Comet, Dwarf planet, Earth, Ecliptic, Eskimo yo-yo, Exoplanet, Fixed stars, Galactic Disc, Galactic halo, Galaxy, Galaxy cluster, Gas giant, Globular cluster, Gravitomagnetic clock effect, Halley's Comet, HAT-P-7b, Haumea, Hill sphere, Hot Jupiter, Hyperion (moon), Impact event, Inertial frame of reference, IRAS 16293-2422, Irregular moon, Jupiter, Kapteyn's Star, Kozai mechanism, Kuiper belt, List of possible dwarf planets, Mechanical equilibrium, Meteorite, Meteoroid, Milky Way, Minor-planet moon, Molecular cloud, Monthly Notices of the Royal Astronomical Society, Natural satellite, ..., Nature (journal), Near-Earth object, Nebular hypothesis, Neptune, NGC 7331, Nutation, Oort cloud, Orbit, Orbital eccentricity, Orbital inclination, Orbital plane (astronomy), Orbital pole, Orbital resonance, Perihelion and aphelion, Perpendicular, Phoebe (moon), Plane (geometry), Planet, Planetary system, Pluto, Precession, Primary (astronomy), Protoplanet, Protoplanetary disk, Regular moon, Rotation, Rotation around a fixed axis, Saturn, Science (journal), Solar System, Star cluster, Sun, Supermassive black hole, Telescope, Terrestrial planet, Tidal locking, Torque, Trade winds, Triton (moon), Uranus, Venus, WASP-17b, Westerlies, Yarkovsky effect, Yarkovsky–O'Keefe–Radzievskii–Paddack effect. Expand index (45 more) »
Accretion disk
An accretion disk is a structure (often a circumstellar disk) formed by diffused material in orbital motion around a massive central body.
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Angle
In plane geometry, an angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle.
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Angular momentum
In physics, angular momentum (rarely, moment of momentum or rotational momentum) is the rotational equivalent of linear momentum.
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Apparent retrograde motion
Apparent retrograde motion is the apparent motion of a planet in a direction opposite to that of other bodies within its system, as observed from a particular vantage point.
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Artificial satellites in retrograde orbit
Artificial satellites are rarely placed in retrograde orbit.
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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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Asteroid capture
Asteroid capture is the entering by an asteroid into an orbit around a larger planetary body.
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Axial tilt
In astronomy, axial tilt, also known as obliquity, is the angle between an object's rotational axis and its orbital axis, or, equivalently, the angle between its equatorial plane and orbital plane.
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Celestial equator
The celestial equator is the great circle of the imaginary celestial sphere on the same plane as the equator of Earth.
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Charon (moon)
Charon, also known as (134340) Pluto I, is the largest of the five known natural satellites of the dwarf planet Pluto.
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Clockwise
Two-dimensional rotation can occur in two possible directions.
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Collisional family
In astronomy, a collisional family is a group of objects that are thought to have a common origin in an impact (collision).
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Comet
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.
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Dwarf planet
A dwarf planet is a planetary-mass object that is neither a planet nor a natural satellite.
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Earth
Earth is the third planet from the Sun and the only astronomical object known to harbor life.
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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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Eskimo yo-yo
Eskimo yo-yo or Alaska yo-yo (Yup'ik: yuuyuuk) is a traditional two-balled bolas-like fur-covered two padded poi type yo-yo skill toy played and performed by the Eskimo-speaking Alaska Natives, such as Inupiat, Siberian Yupik, and Yup'ik.
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Exoplanet
An exoplanet or extrasolar planet is a planet outside our solar system.
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Fixed stars
The fixed stars (stellae fixae) comprise the background of astronomical objects that appear to not move relative to each other in the night sky compared to the foreground of Solar System objects that do.
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Galactic Disc
The Galactic Disc is a component of disc galaxies, such as spiral galaxies and lenticular galaxies.
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Galactic halo
A galactic halo is an extended, roughly spherical component of a galaxy which extends beyond the main, visible component.
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Galaxy
A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter.
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Galaxy cluster
A galaxy cluster, or cluster of galaxies, is a structure that consists of anywhere from hundreds to thousands of galaxies that are bound together by gravity with typical masses ranging from 1014–1015 solar masses.
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Gas giant
A gas giant is a giant planet composed mainly of hydrogen and helium.
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Globular cluster
A globular cluster is a spherical collection of stars that orbits a galactic core as a satellite.
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Gravitomagnetic clock effect
In physics, the gravitomagnetic clock effect is a deviation from Kepler's third law that, according to the weak-field and slow-motion approximation of general relativity, will be suffered by a particle in orbit around a (slowly) spinning body, such as a typical planet or star.
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Halley's Comet
Halley's Comet or Comet Halley, officially designated 1P/Halley, is a short-period comet visible from Earth every 74–79 years.
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HAT-P-7b
No description.
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Haumea
Haumea, minor-planet designation 136108 Haumea, is a dwarf planet located beyond Neptune's orbit.
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Hill sphere
An astronomical body's Hill sphere is the region in which it dominates the attraction of satellites.
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Hot Jupiter
Hot Jupiters are a class of gas giant exoplanets that are inferred to be physically similar to Jupiter but that have very short orbital period (P The close proximity to their stars and high surface-atmosphere temperatures resulted in the moniker "hot Jupiters". Hot Jupiters are the easiest extrasolar planets to detect via the radial-velocity method, because the oscillations they induce in their parent stars' motion are relatively large and rapid compared to those of other known types of planets. One of the best-known hot Jupiters is 51 Pegasi b. Discovered in 1995, it was the first extrasolar planet found orbiting a Sun-like star. 51 Pegasi b has an orbital period of about 4 days.
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Hyperion (moon)
Hyperion (Greek: Ὑπερίων), also known as Saturn VII (7), is a moon of Saturn discovered by William Cranch Bond, George Phillips Bond and William Lassell in 1848.
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Impact event
An impact event is a collision between astronomical objects causing measurable effects.
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Inertial frame of reference
An inertial frame of reference in classical physics and special relativity is a frame of reference in which a body with zero net force acting upon it is not accelerating; that is, such a body is at rest or it is moving at a constant speed in a straight line.
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IRAS 16293-2422
IRAS 16293-2422 is a triple protostar system consisting of a binary star (A1/A2) with a 47 astronomical unit (AU) separation and a removed third star (B) 750AU distant, all having masses similar to that of the Sun.
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Irregular moon
In astronomy, an irregular moon, irregular satellite or irregular natural satellite is a natural satellite following a distant, inclined, and often eccentric and retrograde orbit.
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Jupiter
Jupiter is the fifth planet from the Sun and the largest in the Solar System.
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Kapteyn's Star
Kapteyn's Star is a class M1 red subdwarf about 12.76 light years from Earth in the southern constellation Pictor; it is the closest halo star to the Solar System.
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Kozai mechanism
In celestial mechanics, the Kozai mechanism or Lidov–Kozai mechanism or Kozai–Lidov mechanism, also known as the Kozai, Lidov–Kozai or Kozai–Lidov effect, oscillations, cycles or resonance, is a dynamical phenomenon affecting the orbit of a binary system perturbed by a distant third body under certain conditions, causing the orbit's argument of pericenter to oscillate about a constant value, which in turn leads to a periodic exchange between its eccentricity and inclination.
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Kuiper belt
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.
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List of possible dwarf planets
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.
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Mechanical equilibrium
In classical mechanics, a particle is in mechanical equilibrium if the net force on that particle is zero.
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Meteorite
A meteorite is a solid piece of debris from an object, such as a comet, asteroid, or meteoroid, that originates in outer space and survives its passage through the atmosphere to reach the surface of a planet or moon.
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Meteoroid
A meteoroid is a small rocky or metallic body in outer space.
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Milky Way
The Milky Way is the galaxy that contains our Solar System.
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Minor-planet moon
A minor-planet moon is an astronomical object that orbits a minor planet as its natural satellite.
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Molecular cloud
A molecular cloud, sometimes called a stellar nursery (if star formation is occurring within), is a type of interstellar cloud, the density and size of which permit the formation of molecules, most commonly molecular hydrogen (H2).
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Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society (MNRAS) is a peer-reviewed scientific journal covering research in astronomy and astrophysics.
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Natural satellite
A natural satellite or moon is, in the most common usage, an astronomical body that orbits a planet or minor planet (or sometimes another small Solar System body).
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Nature (journal)
Nature is a British multidisciplinary scientific journal, first published on 4 November 1869.
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Near-Earth object
A near-Earth object (NEO) is any small Solar System body whose orbit can bring it into proximity with Earth.
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Nebular hypothesis
The nebular hypothesis is the most widely accepted model in the field of cosmogony to explain the formation and evolution of the Solar System (as well as other planetary systems).
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Neptune
Neptune is the eighth and farthest known planet from the Sun in the Solar System.
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NGC 7331
NGC 7331 (also known as Caldwell 30) is an unbarred spiral galaxy about away in the constellation Pegasus.
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Nutation
Nutation (from Latin nūtātiō, "nodding, swaying") is a rocking, swaying, or nodding motion in the axis of rotation of a largely axially symmetric object, such as a gyroscope, planet, or bullet in flight, or as an intended behavior of a mechanism.
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Oort cloud
The Oort cloud, named after the Dutch astronomer Jan Oort, sometimes called the Öpik–Oort cloud, is a theoretical cloud of predominantly icy planetesimals proposed to surround the Sun at distances ranging from.
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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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Orbital inclination
Orbital inclination measures the tilt of an object's orbit around a celestial body.
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Orbital plane (astronomy)
The orbital plane of a revolving body is the geometric plane on which its orbit lies.
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Orbital pole
An orbital pole is either point at the ends of an imaginary line segment that runs through the center of an orbit (of a revolving body like a planet) and is perpendicular to the orbital plane.
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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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Perihelion and aphelion
The perihelion of any orbit of a celestial body about the Sun is the point where the body comes nearest to the Sun.
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Perpendicular
In elementary geometry, the property of being perpendicular (perpendicularity) is the relationship between two lines which meet at a right angle (90 degrees).
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Phoebe (moon)
Phoebe (Greek: Φοίβη Phoíbē) is an irregular satellite of Saturn with a mean diameter of 213 km.
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Plane (geometry)
In mathematics, a plane is a flat, two-dimensional surface that extends infinitely far.
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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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Planetary system
A planetary system is a set of gravitationally bound non-stellar objects in or out of orbit around a star or star system.
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Pluto
Pluto (minor planet designation: 134340 Pluto) is a dwarf planet in the Kuiper belt, a ring of bodies beyond Neptune.
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Precession
Precession is a change in the orientation of the rotational axis of a rotating body.
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Primary (astronomy)
A primary (also called a gravitational primary, primary body, or central body) is the main physical body of a gravitationally bound, multi-object system.
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Protoplanet
A protoplanet is a large planetary embryo that originated within a protoplanetary disc and has undergone internal melting to produce a differentiated interior.
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Protoplanetary disk
A protoplanetary disk is a rotating circumstellar disk of dense gas and dust surrounding a young newly formed star, a T Tauri star, or Herbig Ae/Be star.
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Regular moon
In astronomy, a regular moon is a natural satellite following a relatively close and prograde orbit with little orbital inclination or eccentricity.
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Rotation
A rotation is a circular movement of an object around a center (or point) of rotation.
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Rotation around a fixed axis
Rotation around a fixed axis or about a fixed axis of revolution or motion with respect to a fixed axis of rotation is a special case of rotational motion.
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Saturn
Saturn is the sixth planet from the Sun and the second-largest in the Solar System, after Jupiter.
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Science (journal)
Science, also widely referred to as Science Magazine, is the peer-reviewed academic journal of the American Association for the Advancement of Science (AAAS) and one of the world's top academic journals.
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Solar System
The Solar SystemCapitalization of the name varies.
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Star cluster
Star clusters are groups of stars.
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Sun
The Sun is the star at the center of the Solar System.
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Supermassive black hole
A supermassive black hole (SMBH or SBH) is the largest type of black hole, on the order of hundreds of thousands to billions of solar masses, and is found in the centre of almost all currently known massive galaxies.
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Telescope
A telescope is an optical instrument that aids in the observation of remote objects by collecting electromagnetic radiation (such as visible light).
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Terrestrial planet
A terrestrial planet, telluric planet, or rocky planet is a planet that is composed primarily of silicate rocks or metals.
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Tidal locking
Tidal locking (also called gravitational locking or captured rotation) occurs when the long-term interaction between a pair of co-orbiting astronomical bodies drives the rotation rate of at least one of them into the state where there is no more net transfer of angular momentum between this body (e.g. a planet) and its orbit around the second body (e.g. a star); this condition of "no net transfer" must be satisfied over the course of one orbit around the second body.
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Torque
Torque, moment, or moment of force is rotational force.
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Trade winds
The trade winds are the prevailing pattern of easterly surface winds found in the tropics, within the lower portion of the Earth's atmosphere, in the lower section of the troposphere near the Earth's equator.
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Triton (moon)
Triton is the largest natural satellite of the planet Neptune, and the first Neptunian moon to be discovered.
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Uranus
Uranus is the seventh planet from the Sun.
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Venus
Venus is the second planet from the Sun, orbiting it every 224.7 Earth days.
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WASP-17b
WASP-17b is an exoplanet in the constellation Scorpius that is orbiting the star WASP-17.
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Westerlies
The westerlies, anti-trades, or prevailing westerlies, are prevailing winds from the west toward the east in the middle latitudes between 30 and 60 degrees latitude.
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Yarkovsky effect
The Yarkovsky effect is a force acting on a rotating body in space caused by the anisotropic emission of thermal photons, which carry momentum.
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Yarkovsky–O'Keefe–Radzievskii–Paddack effect
The Yarkovsky–O'Keefe–Radzievskii–Paddack effect, or YORP effect for short, changes the rotation state of a small astronomical body – that is, the body's spin rate and the obliquity of its pole(s) – due to the scattering of solar radiation off its surface and the emission of its own thermal radiation.
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Direct Motion, Direct motion, Prograde and Retrograde Motion, Prograde and retrograde, Prograde and retrograde motion, Prograde motion, Prograde orbit, Retrogade orbit, Retrograde Motion, Retrograde Orbit, Retrograde Rotation, Retrograde and direct motion, Retrograde motion, Retrograde movement, Retrograde orbit, Retrograde rotation, Retrograge motion.
References
[1] https://en.wikipedia.org/wiki/Retrograde_and_prograde_motion
