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Elena - lagranzhev sputnik Diony
<< Vchera 10.10.1995 Zavtra >>
Elena - lagranzhev sputnik Diony
Avtory i prava: Agenstvo NASA, "Voyadzher -2"
Poyasnenie: Sputnik Saturna Elena ves'ma neobychen: on dvizhetsya vokrug Saturna vblizi orbity bol'shego sputnika - Diony. Orbita Eleny prohodit blizhe k Saturnu na velichinu, ravnuyu 1/6 radiusa orbity Diony. Elena nahoditsya v tak nazyvaemoi "lagranzhevoi tochke" sistemy Diony i Saturna - ustoichivom meste, sozdannom ih gravitacionnymi polyami. Esli Elena chut'-chut' otklonitsya ot svoei orbity, gravitaciya Diony vernet ee obratno v lagranzhevu tochku. Takie ustoichivye lagranzhevy tochki sushestvuyut vo vseh dvoinyh sistemah, vklyuchaya Zemlyu i Lunu. Elena byla otkryta v 1980 godu P.Lakuesom i Dzh.Lekaheksom v rezul'tate nazemnyh nablyudenii. Fotografiya, kotoruyu Vy vidite, byla poluchena kosmicheskim apparatom "Voyadzher-2", kogda on proletal vblizi Saturna v 1981 godu. Agenstvo NASA planiruet zapusk k Saturnu korablya "Kassini" v oktyabre 1997 goda.

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

English text
Po materialam Astronomy Picture Of the Day
Publikacii s klyuchevymi slovami: sputniki Saturna - tochka Lagranzha
Publikacii so slovami: sputniki Saturna - tochka Lagranzha
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