Yes some elliptical orbits are more circular than others
The veracity of that conjecture can't be disputed.
Pluto and Eris have the most elliptical and tilted orbits among the known dwarf planets. Pluto's orbit is highly elliptical and tilted compared to the eight planets in our solar system. Eris also has a very elliptical orbit and is tilted at a steep angle.
Mercury and Pluto have the most elliptical orbits among the planets in our solar system. Mercury's orbit is the most eccentric, while Pluto's orbit is also highly elliptical due to its distance from the Sun and its eccentric orbit.
Pluto Thanks for the answer! Unfortunately I meant to restrict the question to the 5 planets visible with the unaided-eye. Mercury, Venus, Mar, Jupiter & Saturn (excluding Earth). My mistake. Then again, perhaps its the planet furthest from the sun would have the greatest deviance from a perfect circular orbit. In that case, of the classical 5, it might be Saturn.
To find a list ranking the best elliptical machines found in the internet at various sites and online services such as eBay, Amazon, and among others that show many elliptical machines at many prices.
Basicaly, the farther away from the sun the planet is, the more elliptical the orbit is because as a planet moves away from the sun it is losing attraction so it goes further, but eventually when it turns around, it get pulled almost directly at the sun. so it comes very close to the sun but then with all the speed it has gained, it manages to hurtle by with tremendous amount of momentum which is what allows it so get so far away from the sun again and repeat the cycle. Hope that helps
The eccentricity of Venus' orbit around the Sun is approximately 0.0067. This value indicates how elliptical the orbit is, with 0 being a perfect circle and 1 being highly elongated. Venus has one of the least eccentric orbits among the planets in our solar system.
Gravity has always been with us but the interaction of forces and masses was studied in the 17th century by Galileo among others, and then Isaac Newton came along with his formula for the attraction between two masses M1 and M2 at distance R:F = G M1 M2 / R2He was able to prove that a force with that formula, acting between the Sun and a planet, would cause the planet to move in an elliptical orbit. Johannes Kepler had already calculated from observations that the planets do actually move in elliptical orbits, so those scientists hit the jackpot.
They were two theories that were used to predict the positions of the planets as they moved among the fixed stars. They both used planetary orbits based on combinations of circles and they were both pretty accurate. Ptolemy had the Earth at the centre while Copernicus had the Sun at the centre. They were both replaced by Kepler's theory, published in 1609, which had elliptical orbits for the planets and also had the Sun at the centre.
Jupiter's orbit is an ellipse with an eccentricity of 0.048, which means that it looks like a circle with the Sun off-centre by an amount equal to 0.048 times the average radius. Uranus has an eccentricity of 0.047 and that is the closest among the other planets.
Among Others has 302 pages.
A circular cross-section.