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Contact lost 30 May 1966, probably decayed the same year First extraterrestrial and Moon orbiter: Lunar Orbiter 1: USA 14 August 1966 Impacted lunar surface 29 October 1966 First U.S. extraterrestrial orbiter Luna 11 [2] USSR 27 August 1966 Contact lost 1 October 1966, probably decayed the same or following year Luna 12: USSR 25 October 1966
There are two types of orbits: closed (periodic) orbits, and open (escape) orbits. Circular and elliptical orbits are closed. Parabolic and hyperbolic orbits are open. Radial orbits can be either open or closed. Circular orbit: An orbit that has an eccentricity of 0 and whose path traces a circle.
An animation showing a low eccentricity orbit (near-circle, in red), and a high eccentricity orbit (ellipse, in purple). In celestial mechanics, an orbit (also known as orbital revolution) is the curved trajectory of an object [1] such as the trajectory of a planet around a star, or of a natural satellite around a planet, or of an artificial satellite around an object or position in space such ...
Three-body orbits (8 P) Pages in category "Types of orbit" The following 2 pages are in this category, out of 2 total. This list may not reflect recent changes. E.
In the orbits nearest to Earth – less than 2,000 km (1,200 mi) orbital altitude, referred to as low-Earth orbit (LEO) – there have traditionally been few "universal orbits" that keep a number of spacecraft in particular rings (in contrast to GEO, a single orbit that is widely used by over 500 satellites). There is currently 85% pollution in ...
Types of orbit (1 C, 2 P) Pages in category "Orbits" The following 121 pages are in this category, out of 121 total. This list may not reflect recent changes. ...
An artist's concept of a planetary system. A planetary system is a set of gravitationally bound non-stellar bodies in or out of orbit around a star or star system.Generally speaking, systems with one or more planets constitute a planetary system, although such systems may also consist of bodies such as dwarf planets, asteroids, natural satellites, meteoroids, comets, planetesimals [1] [2] and ...
Depending on the type of body being described, there are four different kinds of reference planes that are typically used: The ecliptic or invariable plane for planets, asteroids, comets, etc. within the Solar System, as these bodies generally have orbits that lie close to the ecliptic.