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This Article Is About Orbits in Celestial Mechanics, Due To Gravity. For Other Uses, See

This document discusses orbits in celestial mechanics due to gravity. It defines an orbit as the gravitationally curved trajectory of an object such as a planet orbiting a star or a moon orbiting a planet. Orbits are usually regularly repeating trajectories that follow elliptic orbits with the central mass at one focal point of the ellipse, as described by Kepler's laws of planetary motion. Current understanding of orbital mechanics is based on Einstein's general relativity, which accounts for gravity through spacetime curvature.

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33 views1 page

This Article Is About Orbits in Celestial Mechanics, Due To Gravity. For Other Uses, See

This document discusses orbits in celestial mechanics due to gravity. It defines an orbit as the gravitationally curved trajectory of an object such as a planet orbiting a star or a moon orbiting a planet. Orbits are usually regularly repeating trajectories that follow elliptic orbits with the central mass at one focal point of the ellipse, as described by Kepler's laws of planetary motion. Current understanding of orbital mechanics is based on Einstein's general relativity, which accounts for gravity through spacetime curvature.

Uploaded by

Mădă Iorga
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOCX, PDF, TXT or read online on Scribd
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This article is about orbits in celestial mechanics, due to gravity.

For other uses, see Orbit


(disambiguation).

The International Space Station orbits above Earth.

Two bodies of different massorbiting a common barycenter. The relative sizes and type of orbit are similar to
the PlutoCharon system.

In physics, an orbit is the gravitationally curved trajectory of an object,[1] such as the trajectory of
a planet about a star or a natural satellite around a planet. Normally, orbit refers to a regularly
repeating trajectory, although it may also refer to a non-repeating trajectory. To a close
approximation, planets and satellites follow elliptic orbits, with the central mass being orbited at a
focal point of the ellipse,[2] as described by Kepler's laws of planetary motion.
Current understanding of the mechanics of orbital motion is based on Albert Einstein's general
theory of relativity, which accounts for gravity as due to curvature of spacetime, with orbits
following geodesics. For ease of calculation, in most situations, orbital motion is adequately
approximated by Newtonian mechanics, which explains gravity as a force obeying an inverse square
law.[3]

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