The plane of the Earth's orbit IS the ecliptic, so by definition, Earth has the lowest inclination to the ecliptic at "zero". But Neptune is the next lowest at 0.77 degrees, and Jupiter next at 1.31 degrees.
Neptune, it is a twin planet of Uranus and is only slightly smaller than Uranus just like Venus is only slightly smaller of Earth.
Uranus
The planet with the most elliptical or oval-shaped orbit is Mercury. Its orbit is highly elongated, with a high eccentricity of 0.21. This means that Mercury's distance from the Sun varies significantly throughout its orbit, causing extreme temperature fluctuations on the planet's surface.
diviation in shape to circle
A bodies eccentricity is a measure of how circular the orbit of that body is. Perfectly circular orbits have the lowest eccentricity, of 0, whereas orbits such as that of the dwarf planet Pluto are more eccentric. When there are multiple large bodies in an orbit, with smaller bodies orbiting multiple of these, the eccentricities of the smaller bodies are quite high.
Of the planets in our solar system, Venus has the smallest 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.
No planet has a perfectly circular orbit, though Venus has the least orbital eccentricity of any planet in our solar system.
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.
The planet with the most elliptical or oval-shaped orbit is Mercury. Its orbit is highly elongated, with a high eccentricity of 0.21. This means that Mercury's distance from the Sun varies significantly throughout its orbit, causing extreme temperature fluctuations on the planet's surface.
diviation in shape to circle
A bodies eccentricity is a measure of how circular the orbit of that body is. Perfectly circular orbits have the lowest eccentricity, of 0, whereas orbits such as that of the dwarf planet Pluto are more eccentric. When there are multiple large bodies in an orbit, with smaller bodies orbiting multiple of these, the eccentricities of the smaller bodies are quite high.
All planets have at least some elongation or orbital eccentricity and thus not a perfectly circular orbit. Since Pluto was demoted from true planet status, Mercury is now the planet with highest eccentricity (of about 0.21)
Of the planets in our solar system, Venus has the smallest eccentricity.
Mercury's orbit, like all planet's, is elliptical.The eccentricity of Mercury's orbit is 0.206
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.
The orbit becomes more eccentric until the orbit becomes almost a strait line.
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.
No but the sizes of OTHER planets and planetesimals can and do.