double star

double star
a) Two stars which form a stellar system, such that they orbit the point of equilibrium of their gravitational fields; a binary star.
b) Two stars that appear to be one when seen with the naked eye, either because they orbit one another (binary stars) or happen to be in the same line of sight even though they are separated by a great distance (optical binaries).

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  • Double star — Star Star (st[aum]r), n. [OE. sterre, AS. steorra; akin to OFries. stera, OS. sterro, D. ster, OHG. sterno, sterro, G. stern, Icel. stjarna, Sw. stjerna, Dan. stierne, Goth. sta[ i]rn[=o], Armor. & Corn. steren, L. stella, Gr. asth r, a stron,… …   The Collaborative International Dictionary of English

  • Double Star — bezeichnet eine chinesische Raumfahrt Mission mit Beteiligung der Europäischen Weltraumorganisation ESA zur Erforschung des irdischen Magnetfelds und seiner Wechselwirkung mit dem Sonnenwind. Der chinesische Name der Satelliten lautet Tan Ce. Die …   Deutsch Wikipedia

  • Double Star — Saltar a navegación, búsqueda Double Star fue una misión conjunta chino europea y dirigida por la ESA y la Agencia Espacial China (CNSA) para el estudio de la magnetosfera terrestre, complementado la misión Cluster. En 1997 la CNSA invitó a la… …   Wikipedia Español

  • Double star — Double Dou ble (d[u^]b l), a. [OE. doble, duble, double, OF. doble, duble, double, F. double, fr. L. duplus, fr. the root of duo two, and perh. that of plenus full; akin to Gr. diplo os double. See {Two}, and {Full}, and cf. {Diploma}, {Duple}.]… …   The Collaborative International Dictionary of English

  • double star — n. 1. BINARY STAR 2. two stars, along the same line of sight, that look like one star, or a binary star, but actually are very distant and physically unrelated; optical double …   English World dictionary

  • Double star — For other uses, see Double star (disambiguation). In observational astronomy, a double star is a pair of stars that appear close to each other in the sky as seen from Earth when viewed through an optical telescope. This can happen either because… …   Wikipedia

  • Double Star — For other uses, see double star (disambiguation). Double Star   …   Wikipedia

  • Double Star — Pour le roman de Robert A. Heinlein, voir Double Étoile. Double Star est un programme spatial chinois de la China National Space Administration (CNSA), mené en coopération avec l Agence spatiale européenne (ESA). C est la première mission… …   Wikipédia en Français

  • double star — Astron. two stars that appear as one if not viewed through a telescope with adequate magnification, such as two stars that are separated by a great distance but are nearly in line with each other and an observer (optical double star), or those… …   Universalium

  • double star — dviguboji žvaigždė statusas T sritis fizika atitikmenys: angl. binary star; double star vok. Doppelstern, m rus. двойная звезда, f pranc. étoile binaire, f; étoile double, f …   Fizikos terminų žodynas

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