- elliptical velocity
- 椭圆速度
English-Chinese dictionary of mechanical engineering (英汉机械工程大词典). 2013.
elliptical velocity
Look at other dictionaries:
Fundamental plane (elliptical galaxies) — The fundamental plane for elliptical galaxies relates the effective radius, average surface brightness and central velocity dispersion.MotivationMany characteristics of a galaxy are correlated. For example, as one would expect, a galaxy with a… … Wikipedia
High-velocity star — A high velocity star is a star moving faster than 65 km/s to 100 km/s (definitions vary) relative to the average motion of the stars in the Sun s neighbourhood. The velocity is also sometimes defined as supersonic relative to the surrounding… … Wikipedia
orbital velocity — the minimum velocity at which a body must move to maintain a given orbit. Cf. circular velocity. * * * ▪ physics velocity sufficient to cause a natural or artificial satellite to remain in orbit. Inertia of the moving body tends to make it… … Universalium
Sagittarius Dwarf Elliptical Galaxy — Infobox Galaxy caption = name = Sagittarius Dwarf Elliptical Galaxycite web title=SIMBAD Astronomical Database work=Results for Sagittarius Dwarf Spheroidal url=http://simbad.u strasbg.fr/Simbad accessdate=2006 11 28 ] epoch = J2000 type =… … Wikipedia
Highly Elliptical Orbit — (HEO) is an elliptic orbit characterized by a relatively low altitude perigee and an extremely high altitude apogee. These extremely elongated orbits can have the advantage of long dwell times at a point in the sky during the approach to and… … Wikipedia
cosmos — /koz meuhs, mohs/, n., pl. cosmos, cosmoses for 2, 4. 1. the world or universe regarded as an orderly, harmonious system. 2. a complete, orderly, harmonious system. 3. order; harmony. 4. any composite plant of the genus Cosmos, of tropical… … Universalium
Orbital mechanics — A satellite orbiting the earth has a tangential velocity and an inward acceleration. Orbital mechanics or astrodynamics is the application of ballistics and celestial mechanics to the practical problems concerning the motion of rockets and other… … Wikipedia
Orbit — This article is about orbits in celestial mechanics, due to gravity. For other uses, see Orbit (disambiguation). A satellite orbiting the Earth has a tangential velocity and an inward acceleration … Wikipedia
galaxy — /gal euhk see/, n., pl. galaxies. 1. Astron. a. a large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space. b. (usually cap.) See Milky Way. 2. any large and brilliant or impressive… … Universalium
Milky Way Galaxy — Large spiral galaxy (roughly 150,000 light years in diameter) that contains Earth s solar system. It includes the multitude of stars whose light is seen as the Milky Way, the irregular luminous band that encircles the sky defining the plane of… … Universalium
celestial mechanics — the branch of astronomy that deals with the application of the laws of dynamics and Newton s law of gravitation to the motions of heavenly bodies. [1815 25] * * * Branch of astronomy that deals with the mathematical theory of the motions of… … Universalium
