In astrodynamics or celestial mechanics, an elliptic orbit or elliptical orbit is a Kepler orbit with an eccentricity of less than 1; this includes the special case of a circular orbit, with eccentricity equal to 0. In a stricter sense, it is a Kepler orbit with the eccentricity greater than 0 and less than 1 (thus excluding the circular orbit).

2025年3月17日 · All orbits are elliptical, which means they are an ellipse, similar to an oval. For the planets, the orbits are almost circular. The orbits of comets have a different shape. They look like a "squashed" circle. They look more like thin ellipses than circles.

2024年8月13日 · An elliptical orbit is an oval-shaped orbit that can have an eccentricity of 0, a perfect circle, up to (but not including) 1, which would be a parabolic orbit.

2018年3月13日 · An elliptical orbit is the revolving of one object around another in an oval-shaped path called an ellipse. The planets in the solar system orbit the sun in elliptical orbits. Many satellites orbit the Earth in elliptical orbits as does the moon.

2023年10月19日 · The orbital eccentricity of a planetary body is a parameter that tells how much its orbit deviates from a perfectly circular orbit. In other words, orbital eccentricity tells how flat or round the path of orbit could be.

2010年7月7日 · An orbit is a regular, repeating path that one object in space takes around another one. An object in an orbit is called a satellite. A satellite can be natural, like Earth or the moon. Many planets have moons that orbit them. A satellite …

Although some objects follow circular orbits, most orbits are shaped more like "stretched out" circles or ovals. Mathematicians and astronomers call this oval shape an ellipse. All of the planets in our Solar System, many satellites, and most moons move along elliptical orbits.

This means that the bottom of the fraction in the orbit equation, Eq. (113) , is never zero and the orbit is an elliptical shape. The minimum value of \(r\) occurs at periapsis where \(\nu = 0\) and the maximum value of \(r\) is at apoapsis where \(\nu = \pi\) .

2024年12月9日 · An elliptical orbit is a closed, oval-shaped path that celestial objects follow as they move around a central body due to gravity. Unlike a circular orbit, where the distance from the central body remains constant, an elliptical orbit has varying distances.

In orbit …of another planet, elliptical; some elliptical orbits are very nearly circles, while others are much elongated. Some bodies may follow parabolic or hyperbolic paths (open-ended curves). The orbit of a body approaching the solar system from a very great distance, curving once around the Sun, and receding again is such… Read More