mean orbit
41Low Earth orbit — An orbiting cannon ball showing various sub orbital and orbital possibilities …
42Near-equatorial orbit — A near equatorial orbit is an orbit that lies close to the equatorial plane of the object orbited. This orbit allows for rapid revisit times (for a single orbiting spacecraft) of near equatorial ground sites.[citation needed] See also List of… …
43Geosynchronous orbit — A geosynchronous orbit is an orbit around the Earth with an orbital period matching the Earth s sidereal rotation period [V. Chobotov, ed., (1996) Orbital Mechanics, 2nd edition , AIAA Education Series, p. 304.] . This synchronization means that… …
44Single-stage-to-orbit — The VentureStar was a proposed SSTO spaceplane. A single stage to orbit (or SSTO) vehicle reaches orbit from the surface of a body without jettisoning hardware, expending only propellants and fluids. The term usually, but not exclusively, refers… …
45Non-inclined orbit — A non inclined orbit is an orbit which is contained in the plane of reference. The inclination is 0 for prograde orbits, and π (180°) for retrograde orbits. If the plane of reference is the equator, these orbits are called equatorial; if the… …
46Earth's orbit — In astronomy, The Earth s Orbit involves the Earth orbiting the Sun at an average distance of about 150 million kilometers every 365.2564 mean solar days (1 sidereal year). From Earth, this gives an apparent movement of the Sun with respect to… …
47Greenwich Mean Time — (GMT) is a term originally referring to mean solar time at the Royal Observatory in Greenwich, London. It is now often used to refer to Coordinated Universal Time (UTC) when this is viewed as a time zone, although strictly UTC is an atomic time… …
48It Don't Mean a Thing If It Ain't Got That Swing (album) — It Don t Mean a Thing If It Ain t Got that Swing Studio album by Duke Ellington Teresa Brewer Released …
49Minimum orbit intersection distance — The orbit of (4953) 1990 MU, which, with a MOID of 0.0276 AU, is classified as a potentially hazardous object Minimum orbit intersection distance (MOID) is a measure used in astronomy to assess collision risk between astronomical objects.[1] It… …
50astronomical mean sun — An imaginary body, which is assumed to travel around equinoctial at a constant rate, completing one orbit in the same time the earth takes to complete one orbit around the ecliptic. Also known as the mean sun …
