1. Planets in the orbits all conform to Kepler's three laws of planetary motion, 2. The orbits are all nearly in the same plane,
3. The orbits are all elliptical, but not very ellptical and near-circular in shape, with the Sun slightly off-centre.
Added:
p2 = a3
P. The planetary orbital period in earth years.
a. Distance from sun in astronomical units, based on 1 AU for earth. ( for example, Mars would be about 1.5 AU and you would use this value in the equation, not the actual distance )
No, not all planets have elliptical orbits. While most planets in our solar system have nearly circular orbits, some planets, like Mercury and Pluto, have more elliptical orbits. Additionally, exoplanets outside our solar system can have a variety of orbital shapes.
All the planets have orbits so four cannot be picked out.
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
Most planets have elliptical orbits around the Sun. These orbits are slightly elongated circles, with the planet closer to the Sun at one end (perihelion) and farther away at the other end (aphelion).
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.
No, not all planets have elliptical orbits. While most planets in our solar system have nearly circular orbits, some planets, like Mercury and Pluto, have more elliptical orbits. Additionally, exoplanets outside our solar system can have a variety of orbital shapes.
Venus has the least eccentric (most nearly circular) orbit of the eight in our solar system.
All the planets have orbits so four cannot be picked out.
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
Most cross orbits of planets which allows it to hit the planets easier. They do not go into a full orbit at all.
Ovals
venus and pluto
venus and pluto
Most planets have elliptical orbits around the Sun. These orbits are slightly elongated circles, with the planet closer to the Sun at one end (perihelion) and farther away at the other end (aphelion).
Planetry orbits are elliptical. Most planet's orbits are nearly circular apart from Mercury and Pluto.
Pluto and Abby University
The shape of most planets' orbits around the sun, including Earth, is elliptical. This means that their orbits are not perfect circles but rather slightly elongated with the sun positioned at one of the foci of the ellipse.