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EntityQ4130· pop 112· linked from 2,947 articles

轨道

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人造卫星或天体的运行轨道

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I cannot write an accurate overview based on the provided context, as it contains only a caption about orbital eccentricity without substantive information about what an orbit is or why it matters. To provide an accurate, plain-language overview as requested, I would need more complete source material.

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Wikidata facts

Subclass of: trajectory
Part of: celestial mechanics
Image: STS-130 Endeavour flyaround 5.jpg

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topic's main category: Category:Orbits
maintained by WikiProject: WikiProject Mathematics
has cause: gravity
has characteristic: orbital speed
has list: list of orbits
Commons gallery: Orbits
Commons category: Orbits
topic has template: Template:Orbits
described by source: Encyclopædia Britannica 11th edition
on focus list of Wikimedia project: Wikipedia:Vital articles/Level/4

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Article · 中文

在物理学中，轨道是一个物体在引力作用下绕空间中一点运行的路径，比如行星绕一颗恒星的轨迹，或天然卫星绕一颗行星的轨迹。行星的轨道一般都是椭圆，而且其绕行的质量中心在椭圆的一个焦点上。当前人们对轨道运动原理的认识基于爱因斯坦的广义相对论，认为引力是由时空弯曲造成的，而轨道则是时空场的几何测地线。为了简化计算，通常用基于开普勒定律的万有引力理论来作为相对论的近似。

Abstract from DBpedia / Wikipedia · CC BY-SA

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