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Robert Walker
Yes, but over the equator only. It's geostationary orbit - the higher the orbit, the longer it takes. So the ISS orbits the Earth in about 90 minutes, and the Moon, obviously, in 28 days. In between you get Geostationary Orbit where satellites orbit the Earth once a day.

There's another orbit though, kind of a substitute for geostationary, which you can use if it is okay for your satellite to hover over a fixed geographical location more or less, for most of the day rather than permanently.

That's the Molniya orbit

It's an elongated orbit and the satellite spends much of its time high above Russia (or elsewhere in the Northern Hemisphere, and of course would work equally well, with a different orbit, if you wanted to hover over the Southern Hemisphere) but then comes in for a close pass of the Earth every 12 hours then back into space again.

 It is inclined at 63.4 degrees because of the oblateness of the Earth - that's the most stable angle for an inclined orbit. So reduces need for station keeping fuel.

You can also set it to hover above either pole for most of its orbit,  using a highly eccentric Polar orbit with apogee (furthest from the Earth) above the pole you are interested in.

About the Author

Robert Walker

Robert Walker

Writer of articles on Mars and Space issues - Software Developer of Tune Smithy, Bounce Metronome etc.
Studied at Wolfson College, Oxford
Lives in Isle of Mull
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