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.
Pluto has the most oblique orbit. All the planets have elliptical orbits, however Mercury has the most elliptical orbit since Pluto is now considered a dwarf planet. This information is provided by the Royal Astronomical Society of Canada and available online [see related links].
Mars has the most elliptical orbit. The earth's is almost a perfect circle
Venus
It is an ellipse,
The least eccentric orbit is Venus The most eccentric orbit is Pluto (aside from Pluto, Mercury)
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.
No, in fact it has the most elongated and tilted orbit in the whole solar system
Planet Neptune takes the most time to orbit the sun, as it is the farthest away.
Pluto has the most oblique orbit. All the planets have elliptical orbits, however Mercury has the most elliptical orbit since Pluto is now considered a dwarf planet. This information is provided by the Royal Astronomical Society of Canada and available online [see related links].
It varies from planet to planet. But most planets including our own, orbit the star in an elliptical motion.
Mars has the most elliptical orbit. The earth's is almost a perfect circle
The planet with the most elliptical orbit is Mercury. Second is Mars.
Venus
It is an ellipse,
Comets don't orbit a planet, they orbit the sun.
You are thinking of Pluto. Pluto is now designated a minor planet.
Neptune. It would be Pluto, but Pluto is a dwarf planet ( a planet that was a planet, but decided that it wasn't a planet)