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An orbit was the state of a celestial object or spacecraft revolving around a star, planet, or moon, especially a periodic elliptical revolution.

Whilst in orbit of the planet Perfecton the IAC cruiser Winton completed an orbit of the planet every 2 hours. (PROSE: Oh No It Isn't!)

In the 1950s on Earth the British Rocket Group achieved several orbital flights. (PROSE: Who Killed Kennedy)

In 1997 the United Kingdom used an orbiter/lander arrangement for their spacecraft when they returned to Mars. (PROSE: The Dying Days)

Space stations Edit

In the 26th century every colony had an orbital space station where ships could drop cargo without needing to make planetfall. (PROSE: Love and War)

Spaceports would also be used to facilitate the movement of smaller ships between interstellar ships in orbit and the planets that they orbited. (PROSE: Beige Planet Mars)

Spacecraft could also orbit space stations that were located in deep space in a similar manner as they would a planet. (PROSE: Shakedown)

From the years 200,000 to 200,100, Earth was orbited by Satellite Five, later known as the Game Station. (TV: The Long Game, Bad Wolf/The Parting of the Ways) The following year, the Game Station was repurposed into Trear Station. (AUDIO: The Year After I Died)

In the year 5,000,000,000, Earth was orbited by Platform One, where guests witnessed the Sun expand and destroy it. (TV: The End of the World)

Spacecraft orbits Edit

Spacecraft (such as cruisers or shuttles) could orbit a planet in a powered orbit (PROSE: Dragons' Wrath, Father Time) or unpowered orbit which lead to a decayed orbit (and finally crashing back to the planet). (PROSE: Love and War)

Spacecraft could also maintain a geo-stationary orbit; maintaining a fixed position over the planet. (TV: Remembrance of the Daleks, PROSE: Another Girl, Another Planet) This was also known as geo-synchronous orbit or simply stationary orbit. (PROSE: Where Angels Fear, Twilight of the Gods)

In 102, the fleets of the Alliance entered orbit of Earth before their representatives imprisoned the Eleventh Doctor in the Pandorica. (TV: The Pandorica Opens)

Just prior to the invasion of Earth in 2009, the 200-strong fleet of the New Dalek Empire entered the planet's orbit. (TV: The Stolen Earth)

A Dalek flying saucer, carrying the Parliament of the Daleks, took orbit over the Dalek Asylum, waiting for the Eleventh Doctor to deactivate the planet's force field so they could destroy it. (TV: Asylum of the Daleks)

A broadcast of the Question from Trenzalore led to ships from numerous species taking orbit over the planet, precipitating the Siege of Trenzalore. (TV: The Time of the Doctor)

Artificial satellite orbits Edit

Artificial satellites were also launched into orbit and maintained by many civilisations for planetary communication, defence and geo-location (sometimes called geosats or GPS). (TV: Delta and the Bannermen, PROSE: War of the Daleks, The Sword of Forever, Tears of the Oracle) Some satellites had living beings within. (PROSE: Alien Bodies)

Planetary orbits Edit

Thaon 5 was gravitationally locked and cycled through its phases once every 12 days that it completed an orbit. (PROSE: Tempest)

Tempest orbited a mildly unstable flare star every twenty hours. (PROSE: Tempest)

Inside the People's Dyson sphere they had a planet orbiting the star within it. (PROSE: The Also People)

Tyler's Folly orbited an obscure star in the Cygnus Mortis constellation. (PROSE: Down)

Mondas once orbited Earth. (TV: The Tenth Planet)

Other types of orbits Edit

TARDISes could achieve a temporal orbit. (TV: Doctor Who)

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