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A Molniya orbit (Russian: Молния, IPA: [ˈmolnʲɪjə] ⓘ, "Lightning") is a type of satellite orbit designed to provide communications and remote sensing coverage over high latitudes. It is a highly elliptical orbit with an inclination of 63.4 degrees , an argument of perigee of 270 degrees, and an orbital period of approximately half a ...
Such a satellite spends most of its time over two designated areas of the planet. An inclination of 63.4° is normally used to keep the perigee shift small. [15] Supersynchronous orbit: Any orbit in which the orbital period of a satellite or celestial body is greater than the rotational period of the body which contains the barycenter of the orbit.
The green planet moves angularly three times as fast as the blue planet (k = 3); it completes three orbits for every orbit of the blue planet. The red planet illustrates purely radial motion with no angular motion (k = 0). The paths followed by the green and blue planets are shown in Figure 9. A GIF version of this animation is found here.
Argument of periapsis (ω) — defines the orientation of the ellipse in the orbital plane, as an angle measured from the ascending node to the periapsis (the closest point the satellite body comes to the primary body around which it orbits), the purple angle ω in the diagram. This quantity is undefined for circular orbits, but is often set to ...
During the spring and summer seasons, Lake Urmia goes from being a deep green body of water to a bright red one -- and there's a simple explanation. Stunning satellite images show lake completely ...
Groundtrack of Molniya orbit. In the operational part of the orbit (4 hours on each side of apogee), the satellite is north of 55.5° N (latitude of for example central Scotland, Moscow and southern part of Hudson Bay). A satellite in this orbits spends most of its time in the northern hemisphere and passes quickly over the southern hemisphere.
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Our modern-day expert, weather.com senior meteorologist Chris Dolce, explains:. The white appearance of sunlight reaching the Earth actually comes to us in all colors of the rainbow, all of which ...