- mean ecliptic plane
- Космонавтика: средняя эклиптическая плоскость
Универсальный англо-русский словарь. Академик.ру. 2011.
mean ecliptic plane
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Ecliptic — The ecliptic is the apparent path that the Sun traces out in the sky during the year. As it appears to move in the sky in relation to the stars, the apparent path aligns with the planets throughout the course of the year. More accurately, it is… … Wikipedia
ecliptic — noun The apparent path of the sun in the sky. More accurately, it is the intersection of the celestial sphere with the plane of the ecliptic, which is the geometric plane containing the mean orbit of the Earth around the Sun. So named because an… … Wiktionary
mean obliquity — noun : the average angle over a long period of time between the plane of the equator of the earth or other planet and the plane of the ecliptic … Useful english dictionary
Deep Ecliptic Survey — Minor planets discovered: 6 19521 Chaos November 19, 1998 28978 Ixion May 22, 2001 38083 Rhadamanthus April 17, 1999 (42301) 2001 UR163 October 21, 2001 53311 Deucalion April 18, 1999 … Wikipedia
Orbital plane (astronomy) — All of the planets, comets, and asteroids in the solar system are in orbit around the Sun. All of those orbits line up with each other making a semi flat disk called the orbital plane. The orbital plane of an object orbiting another is the… … Wikipedia
Longitude — For Dava Sobel s book about John Harrison, see Longitude (book). For the adaptation of Sobel s book, see Longitude (TV series). Map of Earth Longitude (λ) Lines of longitude appear vertical with varying curvature in this projection, but are… … Wikipedia
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
Orbit of the Moon — Not to be confused with Lunar orbit in the sense of a selenocentric orbit, that is, an orbit around the Moon The Moon completes its orbit around the Earth in approximately 27.3 days (a sidereal month). The Earth and Moon orbit about their… … Wikipedia
Celestial coordinate system — For other uses of Celestial , see Celestial (disambiguation). Orientation of Astronomical Coordinates Orientation of the galactic, ecliptic and equatorial coordinate systems, projected on the celestial sphere, showing the galactic equator (black) … Wikipedia
Tropical year — A tropical year (also known as a solar year), for general purposes, is the length of time that the Sun takes to return to the same position in the cycle of seasons, as seen from Earth; for example, the time from vernal equinox to vernal equinox,… … Wikipedia
eclipse — eclipser, n. /i klips /, n., v., eclipsed, eclipsing. n. 1. Astron. a. the obscuration of the light of the moon by the intervention of the earth between it and the sun (lunar eclipse) or the obscuration of the light of the sun by the intervention … Universalium
