mean orbit
21Orbit phasing — In astrodynamics orbit phasing is the adjustment of the time position of spacecraft along its orbit, usually described as adjusting the orbiting spacecraft s true anomaly. This is predominantly used in satellite positioning, especially if the… …
22orbit — orbitary, adj. /awr bit/, n. 1. the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun. 2. the usual course of one s life or range of one s activities. 3. the sphere of power or …
23mean sun — An imaginary body which is assumed to travel around the equinoctial at a constant rate, completing one orbit in the same time that the earth takes to complete one orbit around the ecliptic. Because of the elliptical shape of the earth’s orbit,… …
24mean day — The time interval between successive transits of the mean sun at a point on the earth. Because of the elliptical shape of the earth’s orbit, the apparent angular velocity of the sun is not constant; hence, the day is indicated by the apparent… …
25mean distance — Astron. the arithmetic mean of the greatest and least distances of a planet from the sun, used in stating the size of an orbit; the semimajor axis. [1885 90] * * * …
26mean planet — Astron. a hypothetical planet that coincides with a real planet when the real planet is at perihelion and that moves in an orbit at a constant velocity equal to the mean velocity of the real planet. * * * …
27mean distance — /min ˈdɪstns/ (say meen distns) noun the arithmetic mean of the greatest and least distances of a planet from the sun, called the semi major axis, and used in stating the size of an orbit …
28mean planet — Astron. a hypothetical planet that coincides with a real planet when the real planet is at perihelion and that moves in an orbit at a constant velocity equal to the mean velocity of the real planet …
29ArcelorMittal Orbit — The structure in November 2011 General information Status Constructed Type …
30Error of the mean square — Mean Mean, a. [OE. mene, OF. meiien, F. moyen, fr. L. medianus that is in the middle, fr. medius; akin to E. mid. See {Mid}.] 1. Occupying a middle position; middle; being about midway between extremes. [1913 Webster] Being of middle age and a… …
