- List of orbits
The following is a list of types of orbits:

**Centric classifications***

**Galactocentric orbit**: An orbit about the center of agalaxy .Earth 'ssun follows this type of orbit about thegalactic center of theMilky Way .

*: AnHeliocentric orbit orbit around theSun . In ourSolar System , allplanets ,comets , andasteroids are in such orbits, as are many artificial satellites and pieces ofspace debris . Moons by contrast are not in aheliocentric orbit but rather orbit their parent planet.

*: An orbit around the planetGeocentric orbit Earth , such as theMoon orartificial satellite s. Currently there are approximately 2,465 artificial satellites orbiting theEarth .

*: An orbit around the planetAreocentric orbit Mars , such as moons orartificial satellite s.

*: An orbit around the Earth'sLunar orbit moon .**Altitude classifications***

:Low Earth Orbit (LEO)Geocentric orbit s ranging in altitude from 0–2,000km (0–1,240mile s)

*:Medium Earth Orbit (MEO)Geocentric orbit s ranging in altitude from 2,000km (1,240mile s) to just belowgeosynchronous orbit at 35,786km (22,240mile s). Also known as anintermediate circular orbit .

*: The orbit around Earth exactly matching Earth's sidereal rotation period.Geosynchronous orbit

*:High Earth Orbit (HEO)Geocentric orbit s above the altitude ofgeosynchronous orbit 35,786km (22,240mile s).**Inclination classifications***

: An orbit whoseInclined orbit inclination in reference to theequatorial plane is not 0.

**: AnPolar orbit orbit that passes above or nearly above both poles of the planet on each revolution. Therefore it has aninclination of (or very close to) 90 degrees.

****Polar**: A nearlysun synchronous orbit (SSO)polar orbit that passes theequator at the same localsolar time on every pass. Useful forimage taking satellites becauseshadow s will be the same on every pass.

*: An orbit whoseNon-inclined orbit inclination is equal to zero with respect to someplane of reference .

****Ecliptical orbit**: Anon-inclined orbit with respect to theecliptic .

****Equatorial orbit**: Anon-inclined orbit with respect to theequator .

*: An orbit whose inclination with respect to theNear equatorial orbit equatorial plane is nearly zero. This orbit allows for rapid revisit times (for a single orbiting spacecraft) of near equatorial ground sites.**Eccentricity classifications***

: AnCircular orbit orbit that has an eccentricity of 0 and whose path traces acircle .

*: AnElliptic orbit orbit with an eccentricity greater than 0 and less than 1 whose orbit traces the path of anellipse .

**: AnGeosynchronous transfer orbit elliptic orbit where theperigee is at thealtitude of aLow Earth Orbit (LEO) and theapogee at thealtitude of ageosynchronous orbit .

**: AnGeostationary transfer orbit elliptic orbit where theperigee is at thealtitude of aLow Earth Orbit (LEO) and theapogee at thealtitude of ageostationary orbit .

**: An orbital maneuver that moves aHohmann transfer orbit spacecraft from onecircular orbit to another using two engineimpulse s. This maneuver was named afterWalter Hohmann .

*: AnHyperbolic trajectory orbit with the eccentricity greater than 1. Such an orbit also has avelocity in excess of theescape velocity and as such, will escape the gravitational pull of theplanet and continue to travelinfinitely .

*: AnParabolic orbit orbit with the eccentricity equal to 1. Such an orbit also has avelocity equal to theescape velocity and therefore will escape the gravitational pull of theplanet and travel until itsvelocity relative to theplanet is 0. If the speed of such an orbit is increased it will become ahyperbolic orbit .

**: A high-speedEscape orbit (EO)parabolic orbit where the object hasescape velocity and is moving away from theplanet .

**: A high-speedCapture orbit parabolic orbit where the object hasescape velocity and is moving toward theplanet .**ynchronous classifications***

: An orbit where the satellite has anSynchronous orbit orbital period equal to the averagerotational period (earth's is: 23hour s, 56minute s, 4.091second s) of the body being orbited and in the same direction of rotation as that body.

*: A nearly circular orbit with an altitude of approximately 35,786 km (22,240 miles). Such a satellite traces anGeosynchronous orbit (GEO)analemma (figure 8) in the sky, as seen from the ground.

**: A circularGeostationary orbit (GSO)geosynchronous orbit with aninclination of zero. To an observer on the ground this satellite would appear as a fixed point in the sky.

***: Another name for aClarke orbit geostationary orbit . Named after the writerArthur C. Clarke .

*: A synchronous but highlyTundra orbit elliptic orbit withinclination of 63.4° andorbital period of onesidereal day (roughly 24 hours). Such a satellite spends most of its time over a designated area of theplanet . The particular inclination keeps the perigee shift small.

*: AnSemi-synchronous orbit orbit with anorbital period of approximately 12 hours. If the orbit is circular, this requires analtitude of approximately 20,200 km (12,544.2 miles).

**: A semi-synchronous but highlyMolniya orbit elliptic orbit withinclination of 63.4° andorbital period of half of asidereal day (roughly 12 hours). Such a satellite spends most of its time over two designated areas of theplanet . The particular inclination keeps the perigee shift small.

*: A disposal / storage orbit above GSO/GEO. Satellites will drift west. Also aSupersynchronous orbit synonym for Disposal orbit.

*: A drift orbit close to but below GSO/GEO. Satellites will drift east.Subsynchronous orbit

*: An orbit a few hundred kilometers aboveGraveyard orbit geosynchronous that satellites are moved into at the end of their operation.

**: ADisposal orbit synonym forgraveyard orbit .

**: AJunk orbit synonym forgraveyard orbit .

*: AAreosynchronous orbit synchronous orbit around the planetMars with anorbital period equal in length to Mars'sidereal day , 24.6229hours .

*: AAreostationary orbit (ASO)circular areosynchronous orbit on theequatorial plane and about 17,000km (10,557mile s) above the surface of Mars. To an observer on the ground this satellite would appear as a fixed point in the sky.

*: AnHeliosynchronous orbit heliocentric orbit about theSun where the satellite'sorbital period matches theSun 's period ofrotation . These orbits occur at a radius of 24,360 Gm (0.1628 AU) around theSun , a little less than half of theorbital radius of Mercury.**pecial classifications***

: An orbit which combinesSun-synchronous orbit altitude andinclination in such a way that the satellite passes over any given point of theplanets 's surface at the same localsolar time . Such an orbit can place a satellite in constant sunlight and is useful forimaging , spy, andweather satellite s.

*: The orbital characteristics ofOrbit of the Moon Earth 'smoon . Averagealtitude of 384,403 kilometres (238,857 mi), elliptical-inclined orbit .**Pseudo-orbit classifications***

: AnHorseshoe orbit orbit that appears to a ground observer to be orbiting a certainplanet but is actually in co-orbit with theplanet . See asteroids3753 Cruithne and 2002 AA_{29}.

*: A maneuver where aExo-orbit spacecraft achieves anorbit that is unstable due to atmospheric drag.

*Lunar transfer orbit (LTO)

*: AnPrograde orbit orbit with an inclination of less than 90°. Or rather, an orbit that is in the same direction as the rotation of the primary.

*: AnRetrograde orbit orbit with aninclination of more than 90°. Or rather, an orbit counter to the direction of rotation of the planet. Apart from those insun-synchronous orbit , few satellites are launched intoretrograde orbit because the quantity of fuel required to launch them is much greater than for aprograde orbit . This is because when the rocket starts out on the ground, it already has an eastward component ofvelocity equal to the rotational velocity of the planet at its launchlatitude .**Other***

Box orbit

*Ecliptic orbit

*Osculating orbit

*Parking orbit

*Artificial satellite orbit

*Halo orbit

*Lissajous orbit

*Satellites can also orbitLagrangian point s

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