Nothing is perfect.
All the planets have elliptical orbits but Uranus and Neptune have slightly different orbits than other planets on solar system.
Earth and Venus DO follow elliptical orbits around the sun (though the orbit of Venus is only very slightly elliptical). Earth's orbit being elliptical is, combined with our axial tilt, why we have seasons.
All closed orbits are elliptical.
Planetary orbits that are elliptical will have a greater focus.
Nothing is perfect.
As an elliptical orbit is any orbit that isn't perfectly circular, everything has an elliptical orbit. The planets Mercury and Pluto have the most elliptical orbits of the planets, and are easily seen to be oval shaped. Comets also have highly elliptical orbits.
All the planets have elliptical orbits but Uranus and Neptune have slightly different orbits than other planets on solar system.
Earth and Venus DO follow elliptical orbits around the sun (though the orbit of Venus is only very slightly elliptical). Earth's orbit being elliptical is, combined with our axial tilt, why we have seasons.
It was Kepler who discovered that the planets orbits are elliptical.
All closed orbits are elliptical.
Most planetary orbits are elliptical.
Oort cloud comets
Planetary orbits that are elliptical will have a greater focus.
Comets do indeed have orbits. Sometimes the orbits take thousands of years. For the most part, they stay in these orbits unless affected by the gravity of another body.
Planetry orbits are elliptical. Most planet's orbits are nearly circular apart from Mercury and Pluto.
elliptical