orbit

or·bit

O0107800 (ôr′bĭt)n.1. a. The path of a celestial body or an artificial satellite as it revolves around another body due to their mutual gravitational attraction.b. One complete revolution of such a body.2. The path of a body in a field of force surrounding another body; for example, the movement of an atomic electron in relation to a nucleus.3. a. A range of activity, experience, or knowledge.b. A range of control or influence: "What magnetism drew these quaking ruined creatures into his orbit?" (Malcolm Lowry). See Synonyms at range.4. Either of two bony cavities in the skull containing an eye and its external structures. Also called eye socket.v. or·bit·ed, or·bit·ing, or·bits v.intr. To move in an orbit.v.tr.1. To revolve around (a center of attraction): The moon orbits Earth.2. To put into an orbit: The space agency orbited a new satellite.

[Middle English orbita, eye socket, from Old French orbite, from Latin orbita, orbit, probably from orbis.]

orbit

(ˈɔːbɪt) n1. (Astronomy) astronomy the curved path, usually elliptical, followed by a planet, satellite, comet, etc, in its motion around another celestial body under the influence of gravitation2. a range or field of action or influence; sphere: he is out of my orbit. 3. (Anatomy) anatomy the bony cavity containing the eyeball. Nontechnical name: eye socket 4. (Zoology) zoology a. the skin surrounding the eye of a birdb. the hollow in which lies the eye or eyestalk of an insect or other arthropod5. (Atomic Physics) physics the path of an electron in its motion around the nucleus of an atomvb6. (Astronomy) to move around (a body) in a curved path, usually circular or elliptical7. (Astronautics) (tr) to send (a satellite, spacecraft, etc) into orbit8. (intr) to move in or as if in an orbit[C16: from Latin orbita course, from orbis circle, orb]

or•bit

(ˈɔr bɪt)
n. 1. the curved path, usu. elliptical, described by a planet, satellite, spaceship, etc., around a celestial body. 2. the usual course of one's life. 3. the sphere of influence, as of a nation or person. 4. Physics. (in Bohr theory) the path traced by an electron revolving around the nucleus of an atom. 5. the bony cavity of the skull that contains the eye; eye socket. 6. the part surrounding the eye of a bird or insect. v.t. 7. to move or travel around in an orbital or elliptical path. 8. to send into orbit, as a satellite. v.i. 9. to travel in an orbit. [1350–1400; Middle English < Latin orbita wheel track, course, circuit]

or·bit

(ôr′bĭt)Noun1. a. The path of a celestial body or an artificial satellite as it revolves around another body.b. One complete revolution of such a body. See Note at solar system.2. The path of a body in a field of force surrounding another body; for example, the path of an electron in relation to the nucleus of an atom.3. Either of two bony hollows in the skull containing the eye and its associated structures.Verb1. To move in an orbit around another body.2. To put into an orbit: orbit a satellite.

orbit

apsis - The extreme point of an orbit.
eccentric - First meant "not concentric" as it referred to an orbit in which the Earth was not precisely in the center or straying from a circular path; the area where two circles overlap is the eccentric.
exorbitant - Originally a legal term for a case outside of the scope of a law; since it implies going "out of orbit," it also first meant "deviating from the true path."
orbit - First meant "eye socket"; the eye is located in the eye socket or orbit.

orbit

Past participle: orbited
Gerund: orbiting

Imperative
orbit
orbit

Present
I orbit
you orbit
he/she/it orbits
we orbit
you orbit
they orbit

Preterite
I orbited
you orbited
he/she/it orbited
we orbited
you orbited
they orbited

Present Continuous
I am orbiting
you are orbiting
he/she/it is orbiting
we are orbiting
you are orbiting
they are orbiting

Present Perfect
I have orbited
you have orbited
he/she/it has orbited
we have orbited
you have orbited
they have orbited

Past Continuous
I was orbiting
you were orbiting
he/she/it was orbiting
we were orbiting
you were orbiting
they were orbiting

Past Perfect
I had orbited
you had orbited
he/she/it had orbited
we had orbited
you had orbited
they had orbited

Future
I will orbit
you will orbit
he/she/it will orbit
we will orbit
you will orbit
they will orbit

Future Perfect
I will have orbited
you will have orbited
he/she/it will have orbited
we will have orbited
you will have orbited
they will have orbited

Future Continuous
I will be orbiting
you will be orbiting
he/she/it will be orbiting
we will be orbiting
you will be orbiting
they will be orbiting

Present Perfect Continuous
I have been orbiting
you have been orbiting
he/she/it has been orbiting
we have been orbiting
you have been orbiting
they have been orbiting

Future Perfect Continuous
I will have been orbiting
you will have been orbiting
he/she/it will have been orbiting
we will have been orbiting
you will have been orbiting
they will have been orbiting

Past Perfect Continuous
I had been orbiting
you had been orbiting
he/she/it had been orbiting
we had been orbiting
you had been orbiting
they had been orbiting

Conditional
I would orbit
you would orbit
he/she/it would orbit
we would orbit
you would orbit
they would orbit

Past Conditional
I would have orbited
you would have orbited
he/she/it would have orbited
we would have orbited
you would have orbited
they would have orbited

orbit

The curving path that one space object takes around another.

Thesaurus

Noun	1.	orbit - the (usually elliptical) path described by one celestial body in its revolution about another; "he plotted the orbit of the moon"celestial orbitapoapsis, point of apoapsis - (astronomy) the point in an orbit farthest from the body being orbitedgeosynchronous orbit - a circular orbit around the Earth having a period of 24 hoursitinerary, route, path - an established line of travel or accessperiapsis, point of periapsis - (astronomy) the point in an orbit closest to the body being orbited
	2.	orbit - a particular environment or walk of life; "his social sphere is limited"; "it was a closed area of employment"; "he's out of my orbit"arena, domain, sphere, area, fieldenvironment - the totality of surrounding conditions; "he longed for the comfortable environment of his living room"distaff - the sphere of work by womenfront - a sphere of activity involving effort; "the Japanese were active last week on the diplomatic front"; "they advertise on many different fronts"kingdom, realm, land - a domain in which something is dominant; "the untroubled kingdom of reason"; "a land of make-believe"; "the rise of the realm of cotton in the south"lap - an area of control or responsibility; "the job fell right in my lap"political arena, political sphere - a sphere of intense political activitypreserve - a domain that seems to be specially reserved for someone; "medicine is no longer a male preserve"province, responsibility - the proper sphere or extent of your activities; "it was his province to take care of himself"
	3.	orbit - an area in which something acts or operates or has power or control: "the range of a supersonic jet"; "a piano has a greater range than the human voice"; "the ambit of municipal legislation"; "within the compass of this article"; "within the scope of an investigation"; "outside the reach of the law"; "in the political orbit of a world power"ambit, range, scope, reach, compassextent - the distance or area or volume over which something extends; "the vast extent of the desert"; "an orchard of considerable extent"approximate range, ballpark - near to the scope or range of something; "his answer wasn't even in the right ballpark"confines - a bounded scope; "he stayed within the confines of the city"contrast - the range of optical density and tone on a photographic negative or print (or the extent to which adjacent areas on a television screen differ in brightness)internationality, internationalism - quality of being international in scope; "he applauded the internationality of scientific terminology"latitude - scope for freedom of e.g. action or thought; freedom from restrictionpurview, horizon, view - the range of interest or activity that can be anticipated; "It is beyond the horizon of present knowledge"expanse, sweep - a wide scope; "the sweep of the plains"gamut - a complete extent or range: "a face that expressed a gamut of emotions"spectrum - a broad range of related objects or values or qualities or ideas or activitiespalette, pallet - the range of colour characteristic of a particular artist or painting or school of art
	4.	orbit - the path of an electron around the nucleus of an atomelectron orbititinerary, route, path - an established line of travel or access
	5.	orbit - the bony cavity in the skull containing the eyeballcranial orbit, eye socket, orbital cavitybodily cavity, cavum, cavity - (anatomy) a natural hollow or sinus within the bodylacrimal bone - small fragile bone making up part of the front inner walls of each eye socket and providing room for the passage of the lacrimal ductsskull - the bony skeleton of the head of vertebrates
Verb	1.	orbit - move in an orbit; "The moon orbits around the Earth"; "The planets are orbiting the sun"; "electrons orbit the nucleus"orb, revolveretrograde - move backward in an orbit, of celestial bodiescircle, circulate - move in circles

orbit

noun1. path, course, track, cycle, circle, revolution, passage, rotation, trajectory, sweep, ellipse, circumgyration the point at which the planet's orbit is closest to the sun2. sphere of influence, reach, range, influence, province, scope, sphere, domain, compass, ambit Eisenhower acknowledged that Hungary lay within the Soviet orbit.verb1. circle, ring, go round, compass, revolve around, encircle, circumscribe, gird, circumnavigate the first satellite to orbit the Earth

orbit

noun1. A course, process, or journey that ends where it began or repeats itself:circle, circuit, cycle, round, tour, turn.2. A sphere of activity, experience, study, or interest:area, arena, bailiwick, circle, department, domain, field, province, realm, scene, subject, terrain, territory, world.Slang: bag.3. An area within which something or someone exists, acts, or has influence or power:ambit, compass, extension, extent, purview, range, reach, realm, scope, sphere, sweep, swing.verbTo move or cause to move in circles or around an axis:circle, circumvolve, gyrate, revolve, rotate, turn, wheel.

Translations

沿轨道运行运行轨道

orbit

(ˈoːbit) noun the path in which something moves around a planet, star etc, eg the path of the Earth round the Sun or of a spacecraft round the Earth. The spaceship is in orbit round the moon. （天体等的）运行轨道 verb to go round in space. The spacecraft orbits the Earth every 24 hours.沿轨道运行

orbit

orbit,

in astronomy, path in space described by a body revolving about a second body where the motion of the orbiting bodies is dominated by their mutual gravitational attraction. Within the solar system, planets, dwarf planets, asteroids, and comets orbit the sun and satellites orbit the planets and other bodies.

Planetary Orbits

From earliest times, astronomers assumed that the orbits in which the planets moved were circular; yet the numerous catalogs of measurements compiled especially during the 16th cent. did not fit this theory. At the beginning of the 17th cent., Johannes Kepler stated three laws of planetary motion that explained the observed data: the orbit of each planet is an ellipse with the sun at one focus; the speed of a planet varies in such a way that an imaginary line drawn from the planet to the sun sweeps out equal areas in equal amounts of time; and the ratio of the squares of the periods of revolution of any two planets is equal to the ratio of the cubes of their average distances from the sun. The orbits of the solar planets, while elliptical, are almost circular; on the other hand, the orbits of many of the extrasolar planets discovered during the 1990s are highly elliptical.

After the laws of planetary motion were established, astronomers developed the means of determining the size, shape, and relative position in space of a planet's orbit. The size and shape of an orbit are specified by its semimajor axis and by its eccentricity. The semimajor axis is a length equal to half the greatest diameter of the orbit. The eccentricity is the distance of the sun from the center of the orbit divided by the length of the orbit's semimajor axis; this value is a measure of how elliptical the orbit is. The position of the orbit in space, relative to the earth, is determined by three factors: (1) the inclinationinclination,
in astronomy, the angle of intersection between two planes, one of which is an orbital plane. The inclination of the plane of the moon's orbit is 5°9' with respect to the plane of the ecliptic (the plane of the earth's orbit around the sun).
..... Click the link for more information. , or tilt, of the plane of the planet's orbit to the plane of the earth's orbit (the ecliptic); (2) the longitude of the planet's ascending node (the point where the planet cuts the ecliptic moving from south to north); and (3) the longitude of the planet's perihelion point (point at which it is nearest the sun; see apsisapsis
(pl. apsides), point in the orbit of a body where the body is neither approaching nor receding from another body about which it revolves. Any elliptical orbit has two apsides.
..... Click the link for more information. ).

These quantities, which determine the size, shape, and position of a planet's orbit, are known as the orbital elements. If only the sun influenced the planet in its orbit, then by knowing the orbital elements plus its position at some particular time, one could calculate its position at any later time. However, the gravitational attractions of bodies other than the sun cause perturbationsperturbation
, in astronomy and physics, small force or other influence that modifies the otherwise simple motion of some object. The term is also used for the effect produced by the perturbation, e.g., a change in the object's energy or path of motion.
..... Click the link for more information. in the planet's motions that can make the orbit shift, or precess, in space or can cause the planet to wobble slightly. Once these perturbations have been calculated one can closely determine its position for any future date over long periods of time. Modern methods for computing the orbit of a planet or other body have been refined from methods developed by NewtonNewton, Sir Isaac,
1642–1727, English mathematician and natural philosopher (physicist), who is considered by many the greatest scientist that ever lived. Early Life and Work
..... Click the link for more information. , LaplaceLaplace, Pierre Simon, marquis de
, 1749–1827, French astronomer and mathematician. At 18 he went to Paris, proved his gift for mathematical analysis to Jean le Rond d'Alembert, and was made professor of mathematics in the École militaire of Paris.
..... Click the link for more information. , and GaussGauss, Carl Friedrich
, born Johann Friederich Carl Gauss, 1777–1855, German mathematician, physicist, and astronomer. Gauss was educated at the Caroline College, Brunswick, and the Univ.
..... Click the link for more information. , in which all the needed quantities are acquired from three separate observations of the planet's apparent position.

Nonplanetary Orbits

The laws of planetary orbits also apply to the orbits of comets, natural satellites, artificial satellites, and space probes. The orbits of comets are very elongated; some are long ellipses, some are nearly parabolic (see parabolaparabola
, plane curve consisting of all points equidistant from a given fixed point (focus) and a given fixed line (directrix). It is the conic section cut by a plane parallel to one of the elements of the cone.
..... Click the link for more information. ), and some may be hyperbolic. When the orbit of a newly discovered comet is calculated, it is first assumed to be a parabola and then corrected to its actual shape when more measured positions are obtained. Natural satellites that are close to their primaries tend to have nearly circular orbits in the same plane as that of the planet's equator, while more distant satellites may have quite eccentric orbits with large inclinations to the planet's equatorial plane. Because of the moon's proximity to the earth and its large relative mass, the earth-moon system is sometimes considered a double planet. It is the center of the earth-moon system, rather than the center of the earth itself, that describes an elliptical orbit around the sun in accordance with Kepler's lawsKepler's laws,
three mathematical statements formulated by the German astronomer Johannes Kepler that accurately describe the revolutions of the planets around the sun. Kepler's laws opened the way for the development of celestial mechanics, i.e.
..... Click the link for more information. . All of the planets and most of the satellites in the solar system move in the same direction in their orbits, counterclockwise as viewed from the north celestial pole; some satellites, probably captured asteroids, have retrograde motionretrograde motion,
in astronomy, real or apparent movement of a planet, dwarf planet, moon, asteroid, or comet from east to west relative to the fixed stars. The most common direction of motion in the solar system, both for orbital revolution and axial rotation, is from west to
..... Click the link for more information. , i.e., they revolve in a clockwise direction.

orbit

(or -bit) The path followed by a celestial object or an artificial satellite or spaceprobe that is moving in a gravitational field. For a single object moving freely in the gravitational field of a massive body the orbit is a conic section, in actuality either elliptical or hyperbolic. Closed (repeated) orbits are elliptical, most planetary orbits being almost circular. A hyperbolic orbit results in the object escaping from the vicinity of a massive body. See also Kepler's laws; orbital elements.

Orbit

(religion, spiritualism, and occult)

An orbit is the path in space that one heavenly body makes in its movement around another heavenly body. The Moon, for example, makes an orbit around Earth, while Earth and the other planets make orbits around the Sun. The technical name for the orbiting body is satellite. The orbited body is called a primary. Because primaries are also in motion, the orbits described by satellites are elliptical rather than circular.

Satellites form stable orbits by counterbalancing two forces—their movement away from the primary and the force of gravity drawing them back toward the primary. In other words, in the absence of gravity a satellite would move in a straight line, which would soon take it away from its primary; in the absence of satellite motion, gravity would draw a satellite and its primary together until they collided.

Sources:

Robinson, J. Hedley, and James Muirden. Astronomy Data Book. 2d ed. New York: John Wiley & Sons, 1979.Smoluchowski, Roman. The Solar System: The Sun, Planets, and Life. New York: Scientific American Books, 1983.

orbit

[′ȯr·bət] (anatomy) The bony cavity in the lateral front of the skull beneath the frontal bone which contains the eyeball. Also known as eye socket. (mathematics) Let G be a group which operates on a set S ; the orbit of an element s of S under G is the subset of S consisting of all elements gs where g is in G. (oceanography) The path of a water particle affected by wave motion; it is almost circular in deep-water waves and almost elliptical in shallow-water waves. (physics) Any closed path followed by a particle or body, such as the orbit of a celestial body under the influence of gravity, the elliptical path followed by electrons in the Bohr theory, or the paths followed by particles in a circular particle accelerator. More generally, any path followed by a particle, such as helical paths of particles in a magnetic field, or the parabolic path of a comet.

orbit

1. Astronomy the curved path, usually elliptical, followed by a planet, satellite, comet, etc., in its motion around another celestial body under the influence of gravitation 2. Anatomy the bony cavity containing the eyeball 3. Zoologya. the skin surrounding the eye of a bird b. the hollow in which lies the eye or eyestalk of an insect or other arthropod 4. Physics the path of an electron in its motion around the nucleus of an atom

Orbit

A Scheme compiler.

["Orbit: An Optimising Compiler for Scheme", D.A. Kranz et al,SIGPLAN Notices 21(7):281-292 (Jul 1986)].

orbit

or·bit

orbit

or•bit

or·bit

orbit

orbit

orbit

orbit

orbit

orbit

orbit

into orbit

in orbit

go into orbit

go into orbit

*in orbit

orbit (around) someone or something

in orbit

into orbit

go into orbit

in orbit

orbit

orbit,

Planetary Orbits

Nonplanetary Orbits

orbit

Orbit

Sources:

orbit

orbit

Orbit

orbit

orbit

or·bit

orbit

ORBIT

or·bit

orbit

orbit

Orbit

orbit

or·bit

ORBIT

orbit

Synonyms for orbit

noun path

Synonyms

noun sphere of influence

Synonyms

verb circle

Synonyms

Synonyms for orbit

noun a course, process, or journey that ends where it began or repeats itself

Synonyms

noun a sphere of activity, experience, study, or interest

Synonyms

noun an area within which something or someone exists, acts, or has influence or power

Synonyms

verb to move or cause to move in circles or around an axis

Synonyms

Synonyms for orbit

noun the (usually elliptical) path described by one celestial body in its revolution about another

Synonyms

Related Words

noun a particular environment or walk of life

Synonyms

Related Words

noun an area in which something acts or operates or has power or control: "the range of a supersonic jet"

Synonyms

Related Words

noun the path of an electron around the nucleus of an atom

Synonyms

Related Words

noun the bony cavity in the skull containing the eyeball

Synonyms

Related Words

verb move in an orbit

Synonyms

Related Words