Jan 3, 2018 · This excellent answer nicely describes both Tundra orbits and Molniya orbits. They are both repeat groundtrack orbits with periods of rational fractions of a sidereal day, and both …

Russia's communication satellites occupy Molniya orbits. Because of this, the satellites have apogees over Russia and Canada, instead of just Russia if they were in tundra orbits. A …

Aug 18, 2015 · Molniya orbits are always associated with Russian satellites. What advantage do they have over other orbits?

Nov 24, 2024 · The Molniya orbit was invented specifically because GEO doesn't provide good coverage to extreme north latitudes. The thing that makes it a Molniya orbit is the specific …

Molniya orbits are popular with Russian communication satellites, because they spend a lot of time at high latitudes. Europe and Canada are also quite far north. Do any European, …

Sep 4, 2016 · In the Wikipedia article for Molniya orbit the introduction mentions that the period should be 0.5 sidereal day, so that its path across the sky every ~12 hours as observed from a …

Sep 12, 2021 · Question: How exactly did ground stations track the early Molniya satellites? Since the ground station would (probably) want to look at the highest, slowest-moving of the three …

Dec 26, 2014 · The Molniya orbit has a perigee of 1,000km and an apogee of ~40,000, giving it an orbital period of 12 hours. They were primarily used by the Molniya communications satellites …

Apr 22, 2016 · Molniya-orbit communication satellites work well for ground stations near the poles. These high eccentricity, highly inclined orbits, with a period of 12 hours, “loiter” for about 6 …

Sep 4, 2016 · An Earth orbit with a period of 1 sidereal day (and zero inclination) is a geosynchronous orbit, orbits slightly above and below that are supersynchronous and …