Geostationary orbit

Geostationary orbit was an orbit of an object around a planet which occurred at the same speed as the planet's rotation, causing the object to remain in the same point above the planet's surface. (PROSE: The Blue Angel)

During the Shoreditch Incident of 1963, the Imperial Dalek mothership entered a powered geostationary orbit of Earth. (TV: Remembrance of the Daleks)

The Eighth Doctor, Fitz Kreiner, and Compassion landed on the Nepotist while it was stuck in geostationary orbit around Valcea. (PROSE: The Blue Angel)

The Tenth Doctor claimed it was impossible for the planet Krop Tor to be in geostationary orbit around a black hole, as it should have been pulled in like the star systems around it were. He calculated that it would have taken a phenomenal amount of power to generate the huge gravity field stabilising its orbit. (TV: The Impossible Planet)

In the far future, the Pridka Dream Centre was in geostationary orbit above the second planet in the Taprid system (PROSE: Infinite Requiem) and Zellin's space platform was in geostationary orbit. (TV: Can You Hear Me?)