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Q: The eccentricity of a planet's orbit describes?
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What orbit has the eccentricity that is closest to 0?

Of the planets in our solar system, Venus has the smallest eccentricity.


Which planets move in an elliptical orbit?

All the planets move with an elliptical orbit, but with a very low eccentricity.


Does the size of a planet has any impact on the eccentricity of a planets orbit?

No but the sizes of OTHER planets and planetesimals can and do.


Do planets orbit around the sun in a perfect circle?

All planets orbit the Sun in an elliptical orbit. An elliptical orbit is defined as having an eccentricity of between 0 and 1. (0 is a circular orbit). Anything over 1 is defined as a hyperbolic orbit.Mercury has the highest eccentricity of .205630 whereas the Earth has a near circular orbit with an eccentricity of 0.0167.Triton, a moon of Neptune has lowest eccentricity with a value as close to 0 as can be measured.


What shape describes the paths that planets follow?

The planets orbit the sun in an ellipse, like a squashed circle. The amount by which the ellipse is deformed by, from being a circle, is referred to as the eccentricity. An object with a highly eccentric orbit, such as a comet, will have a very elongated and stretched out orbit, its distance from the sun throughout its orbit will vary by a lot.


What is Mercury's eccentricity?

All the planets have elliptical orbits, but Mercury and Mars have the greatest eccentricity. As to why Mercury's orbit is the most eccentric may be related to its proximity to the Sun.


Is the orbit of Mercury highly elliptical or little elliptical?

The orbit of Mercury has the highest eccentricity of all the Solar System planets


How does the eccentricity of earth compare to other planets?

Earth has an average eccentricity in its orbit of 0.0167. This compares with 0.0068 for Venus and 0.205 for Mercury, which are the minimum and maximum eccentricities in the eight planets. So, the Earth's orbit is not too far from circular. In order of increasing eccentricity, the list of planets is: Venus Neptune Earth Uranus Jupiter Saturn Mars Mercury.


What 2 planets have the most cicular orbits?

Venus has an eccentricity of 0.00677323 Neptune has an eccentricity of 0.00858587 Triton, a moon of Neptune, orbit is as close to a perfect circle with an eccentricity of 0.000016 The Earth for comparison has an eccentricity of 0.01671022


What planet has the most elongated orbit?

What you are referring to is the eccentricity of the planet's orbit around the sun. Eccentricity of a circular orbit is 0.0, whereas the eccentricity of an extremely elongated orbit is 1.0. So the closer the eccentricity of a planet's orbit is to 1.0, the more elongated is its orbit around the sun. Many extra solar planets have high eccentricities in accordance with their parent stars. In our solar system Mercury ( .20563) and Pluto (.24880766) have the highest eccentric orbits.


What are the planets has the most elliptical and tilted orbit?

None of the planets orbit the sun perfectly in a circle, there is a degree of deviation from this perfect circle called eccentricity. The higher the eccentricity (more more the eccentric the orbit is) the further away from this perfect circle the orbit is. The planet that deviates most from a perfect circle, having the highest eccentricity, is Neptune. Neptune also has the highest axial tilt, tilted over onto its side as it orbits the sun.


What type of orbit do the planets have to revolve around the sun?

According to Keplers first law of 1618 which has not been repealed yet, the planets each move in an elliptical orbit with the Sun occupying one focus. The shape of an ellipse is described by the eccentricity. For low eccentricity such as the planets' orbits have, the orbit is very close to being a circle but the most significant difference is that the Sun is off-centre.