Logo
Unionpedia
Communication
Get it on Google Play
New! Download Unionpedia on your Android™ device!
Free
Faster access than browser!
 

Roche limit

Index Roche limit

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. [1]

78 relations: Accretion disk, Adrastea (moon), Amalthea (moon), Astronomy, Atlas (moon), Édouard Roche, Barycenter, Bianca (moon), Black hole, Celestial mechanics, Centrifugal force, Chandrasekhar limit, Charon (moon), Coalescence (physics), Comet, Comet Shoemaker–Levy 9, Cordelia (moon), Cressida (moon), Deimos (moon), Density, Desdemona (moon), Despina (moon), Earth, Eccentricity (mathematics), Ellipsoid, Elliptic function, Epimetheus (moon), Flattening, France, Free fall, Friction, Galatea (moon), Gravity, Hill sphere, Hydrostatic equilibrium, Janus (moon), Juliet (moon), Jupiter, Kepler's laws of planetary motion, Larissa (moon), Mars, Mass, Mercury (planet), Metis (moon), Moon, Naiad (moon), Natural satellite, Neptune, Newton's law of universal gravitation, Ophelia (moon), ..., Orbit, Pan (moon), Pandora (moon), Partial pressure, Phobos (moon), Pluto, Prometheus (moon), Radius, Regolith, Ring system, Roche lobe, Rubble pile, Satellite, Saturn, Solar System, Solid of revolution, Spaghettification, Sphere, Spheroid, Sun, Thalassa (moon), Thebe (moon), Thermal stress, Tidal force, Tidal locking, Triton (moon), Uranus, Viscosity. Expand index (28 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.

New!!: Roche limit and Accretion disk · See more »

Adrastea (moon)

Adrastea (Αδράστεια), also known as, is the second by distance, and the smallest of the four inner moons of Jupiter.

New!!: Roche limit and Adrastea (moon) · See more »

Amalthea (moon)

Amalthea (Ἀμάλθεια) is the third moon of Jupiter in order of distance from the planet.

New!!: Roche limit and Amalthea (moon) · See more »

Astronomy

Astronomy (from ἀστρονομία) is a natural science that studies celestial objects and phenomena.

New!!: Roche limit and Astronomy · See more »

Atlas (moon)

Atlas is an inner satellite of Saturn.

New!!: Roche limit and Atlas (moon) · See more »

Édouard Roche

Édouard Albert Roche (17 October 1820 – 27 April 1883) was a French astronomer and mathematician, who is best known for his work in the field of celestial mechanics.

New!!: Roche limit and Édouard Roche · See more »

Barycenter

The barycenter (or barycentre; from the Ancient Greek βαρύς heavy + κέντρον centre) is the center of mass of two or more bodies that are orbiting each other, which is the point around which they both orbit.

New!!: Roche limit and Barycenter · See more »

Bianca (moon)

Bianca is an inner satellite of Uranus.

New!!: Roche limit and Bianca (moon) · See more »

Black hole

A black hole is a region of spacetime exhibiting such strong gravitational effects that nothing—not even particles and electromagnetic radiation such as light—can escape from inside it.

New!!: Roche limit and Black hole · See more »

Celestial mechanics

Celestial mechanics is the branch of astronomy that deals with the motions of celestial objects.

New!!: Roche limit and Celestial mechanics · See more »

Centrifugal force

In Newtonian mechanics, the centrifugal force is an inertial force (also called a "fictitious" or "pseudo" force) directed away from the axis of rotation that appears to act on all objects when viewed in a rotating frame of reference.

New!!: Roche limit and Centrifugal force · See more »

Chandrasekhar limit

The Chandrasekhar limit is the maximum mass of a stable white dwarf star.

New!!: Roche limit and Chandrasekhar limit · See more »

Charon (moon)

Charon, also known as (134340) Pluto I, is the largest of the five known natural satellites of the dwarf planet Pluto.

New!!: Roche limit and Charon (moon) · See more »

Coalescence (physics)

Coalescence is the process by which two or more droplets, bubbles or particles merge during contact to form a single daughter droplet, bubble or particle.

New!!: Roche limit and Coalescence (physics) · See more »

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.

New!!: Roche limit and Comet · See more »

Comet Shoemaker–Levy 9

Comet Shoemaker–Levy 9 (formally designated D/1993 F2) was a comet that broke apart in July 1992 and collided with Jupiter in July 1994, providing the first direct observation of an extraterrestrial collision of Solar System objects.

New!!: Roche limit and Comet Shoemaker–Levy 9 · See more »

Cordelia (moon)

Cordelia is the innermost known moon of Uranus.

New!!: Roche limit and Cordelia (moon) · See more »

Cressida (moon)

Cressida (Χρησίδα) is an inner satellite of Uranus.

New!!: Roche limit and Cressida (moon) · See more »

Deimos (moon)

Deimos (systematic designation: Mars II) is the smaller and outer of the two natural satellites of the planet Mars, the other being Phobos.

New!!: Roche limit and Deimos (moon) · See more »

Density

The density, or more precisely, the volumetric mass density, of a substance is its mass per unit volume.

New!!: Roche limit and Density · See more »

Desdemona (moon)

Desdemona is an inner satellite of Uranus.

New!!: Roche limit and Desdemona (moon) · See more »

Despina (moon)

Despina (or; Latin: Despœna; Greek: Δέσποινα), also known as Neptune V, is the third-closest inner satellite of Neptune.

New!!: Roche limit and Despina (moon) · See more »

Earth

Earth is the third planet from the Sun and the only astronomical object known to harbor life.

New!!: Roche limit and Earth · See more »

Eccentricity (mathematics)

In mathematics, the eccentricity, denoted e or \varepsilon, is a parameter associated with every conic section.

New!!: Roche limit and Eccentricity (mathematics) · See more »

Ellipsoid

An ellipsoid is a surface that may be obtained from a sphere by deforming it by means of directional scalings, or more generally, of an affine transformation.

New!!: Roche limit and Ellipsoid · See more »

Elliptic function

In complex analysis, an elliptic function is a meromorphic function that is periodic in two directions.

New!!: Roche limit and Elliptic function · See more »

Epimetheus (moon)

Epimetheus is an inner satellite of Saturn.

New!!: Roche limit and Epimetheus (moon) · See more »

Flattening

Flattening is a measure of the compression of a circle or sphere along a diameter to form an ellipse or an ellipsoid of revolution (spheroid) respectively.

New!!: Roche limit and Flattening · See more »

France

France, officially the French Republic (République française), is a sovereign state whose territory consists of metropolitan France in Western Europe, as well as several overseas regions and territories.

New!!: Roche limit and France · See more »

Free fall

In Newtonian physics, free fall is any motion of a body where gravity is the only force acting upon it.

New!!: Roche limit and Free fall · See more »

Friction

Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.

New!!: Roche limit and Friction · See more »

Galatea (moon)

Galatea (Greek: Γαλάτεια), also known as Neptune VI, is the fourth-closest inner satellite of Neptune.

New!!: Roche limit and Galatea (moon) · See more »

Gravity

Gravity, or gravitation, is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward (or gravitate toward) one another.

New!!: Roche limit and Gravity · See more »

Hill sphere

An astronomical body's Hill sphere is the region in which it dominates the attraction of satellites.

New!!: Roche limit and Hill sphere · See more »

Hydrostatic equilibrium

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.

New!!: Roche limit and Hydrostatic equilibrium · See more »

Janus (moon)

Janus is an inner satellite of Saturn.

New!!: Roche limit and Janus (moon) · See more »

Juliet (moon)

Juliet is an inner satellite of Uranus.

New!!: Roche limit and Juliet (moon) · See more »

Jupiter

Jupiter is the fifth planet from the Sun and the largest in the Solar System.

New!!: Roche limit and Jupiter · See more »

Kepler's laws of planetary motion

In astronomy, Kepler's laws of planetary motion are three scientific laws describing the motion of planets around the Sun.

New!!: Roche limit and Kepler's laws of planetary motion · See more »

Larissa (moon)

Larissa (Greek: Λάρισσα), also known as Neptune VII, is the fifth-closest inner satellite of Neptune.

New!!: Roche limit and Larissa (moon) · See more »

Mars

Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System after Mercury.

New!!: Roche limit and Mars · See more »

Mass

Mass is both a property of a physical body and a measure of its resistance to acceleration (a change in its state of motion) when a net force is applied.

New!!: Roche limit and Mass · See more »

Mercury (planet)

Mercury is the smallest and innermost planet in the Solar System.

New!!: Roche limit and Mercury (planet) · See more »

Metis (moon)

Metis (Μήτις), also known as, is the innermost moon of Jupiter.

New!!: Roche limit and Metis (moon) · See more »

Moon

The Moon is an astronomical body that orbits planet Earth and is Earth's only permanent natural satellite.

New!!: Roche limit and Moon · See more »

Naiad (moon)

Naiad (or; Ναϊάδ-ες), also known as Neptune III, is the innermost satellite of Neptune, named after the Naiads of Greek legend.

New!!: Roche limit and Naiad (moon) · See more »

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).

New!!: Roche limit and Natural satellite · See more »

Neptune

Neptune is the eighth and farthest known planet from the Sun in the Solar System.

New!!: Roche limit and Neptune · See more »

Newton's law of universal gravitation

Newton's law of universal gravitation states that a particle attracts every other particle in the universe with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

New!!: Roche limit and Newton's law of universal gravitation · See more »

Ophelia (moon)

Ophelia is a moon of Uranus.

New!!: Roche limit and Ophelia (moon) · See more »

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.

New!!: Roche limit and Orbit · See more »

Pan (moon)

Pan (Πάν) is the innermost moon of Saturn.

New!!: Roche limit and Pan (moon) · See more »

Pandora (moon)

Pandora (Πανδώρα) is an inner satellite of Saturn.

New!!: Roche limit and Pandora (moon) · See more »

Partial pressure

In a mixture of gases, each gas has a partial pressure which is the hypothetical pressure of that gas if it alone occupied the entire volume of the original mixture at the same temperature.

New!!: Roche limit and Partial pressure · See more »

Phobos (moon)

Phobos (systematic designation) is the innermost and larger of the two natural satellites of Mars, the other being Deimos.

New!!: Roche limit and Phobos (moon) · See more »

Pluto

Pluto (minor planet designation: 134340 Pluto) is a dwarf planet in the Kuiper belt, a ring of bodies beyond Neptune.

New!!: Roche limit and Pluto · See more »

Prometheus (moon)

Prometheus is an inner satellite of Saturn.

New!!: Roche limit and Prometheus (moon) · See more »

Radius

In classical geometry, a radius of a circle or sphere is any of the line segments from its center to its perimeter, and in more modern usage, it is also their length.

New!!: Roche limit and Radius · See more »

Regolith

Regolith is a layer of loose, heterogeneous superficial deposits covering solid rock.

New!!: Roche limit and Regolith · See more »

Ring system

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.

New!!: Roche limit and Ring system · See more »

Roche lobe

The Roche lobe (or Roche limit) is the region around a star in a binary system within which orbiting material is gravitationally bound to that star.

New!!: Roche limit and Roche lobe · See more »

Rubble pile

In astronomy, a rubble pile is a celestial body that is not a monolith, consisting instead of numerous pieces of rock that have coalesced under the influence of gravity.

New!!: Roche limit and Rubble pile · See more »

Satellite

In the context of spaceflight, a satellite is an artificial object which has been intentionally placed into orbit.

New!!: Roche limit and Satellite · See more »

Saturn

Saturn is the sixth planet from the Sun and the second-largest in the Solar System, after Jupiter.

New!!: Roche limit and Saturn · See more »

Solar System

The Solar SystemCapitalization of the name varies.

New!!: Roche limit and Solar System · See more »

Solid of revolution

In mathematics, engineering, and manufacturing, a solid of revolution is a solid figure obtained by rotating a plane curve around some straight line (the axis of revolution) that lies on the same plane.

New!!: Roche limit and Solid of revolution · See more »

Spaghettification

In astrophysics, spaghettification (sometimes referred to as the noodle effect) is the vertical stretching and horizontal compression of objects into long thin shapes (rather like spaghetti) in a very strong non-homogeneous gravitational field; it is caused by extreme tidal forces.

New!!: Roche limit and Spaghettification · See more »

Sphere

A sphere (from Greek σφαῖρα — sphaira, "globe, ball") is a perfectly round geometrical object in three-dimensional space that is the surface of a completely round ball (viz., analogous to the circular objects in two dimensions, where a "circle" circumscribes its "disk").

New!!: Roche limit and Sphere · See more »

Spheroid

A spheroid, or ellipsoid of revolution, is a quadric surface obtained by rotating an ellipse about one of its principal axes; in other words, an ellipsoid with two equal semi-diameters.

New!!: Roche limit and Spheroid · See more »

Sun

The Sun is the star at the center of the Solar System.

New!!: Roche limit and Sun · See more »

Thalassa (moon)

Thalassa (Greek: Θάλασσα), also known as Neptune IV, is the second-innermost satellite of Neptune.

New!!: Roche limit and Thalassa (moon) · See more »

Thebe (moon)

Thebe (Θήβη) also known as, is the fourth of Jupiter's moons by distance from the planet.

New!!: Roche limit and Thebe (moon) · See more »

Thermal stress

Thermal stress is stress created by any change in temperature to a material.

New!!: Roche limit and Thermal stress · See more »

Tidal force

The tidal force is an apparent force that stretches a body towards the center of mass of another body due to a gradient (difference in strength) in gravitational field from the other body; it is responsible for the diverse phenomena, including tides, tidal locking, breaking apart of celestial bodies and formation of ring systems within Roche limit, and in extreme cases, spaghettification of objects.

New!!: Roche limit and Tidal force · See more »

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.

New!!: Roche limit and Tidal locking · See more »

Triton (moon)

Triton is the largest natural satellite of the planet Neptune, and the first Neptunian moon to be discovered.

New!!: Roche limit and Triton (moon) · See more »

Uranus

Uranus is the seventh planet from the Sun.

New!!: Roche limit and Uranus · See more »

Viscosity

The viscosity of a fluid is the measure of its resistance to gradual deformation by shear stress or tensile stress.

New!!: Roche limit and Viscosity · See more »

Redirects here:

Roche Limit, Roche planet, Roche radius, Roche world, Roche's Limit, Roche's limit.

References

[1] https://en.wikipedia.org/wiki/Roche_limit

OutgoingIncoming
Hey! We are on Facebook now! »