The eccentricity of an ellipse is a number related to how "egg-shaped" it is ... the
difference between the distance through the fat part and the distance through the
skinny part. That's also related to the distance between the 'foci' (focuses) of the
ellipse.
The farther apart the foci are, the higher the eccentricity is, and the flatter the ellipse is.
Comets have very eccentric orbits.
When the two foci are at the same point, the eccentricity is zero, all of the diameters
of the ellipse have the same length, and the ellipse is a circle. All of the planets have
orbits with small eccentricities.
Assuming that the pins represent the foci, the answer is that the eccentricity would be reduced.
An ellipse whose eccentricity is zero is a circle. As its eccentricity increases, it becomes more and more elliptical, i.e. its foci move farther apart and it appears more "egg-shaped".
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.
The eccentricity of the Earth is approximately 0.0167.
All natural orbits are ellipses. We can force an artificial satellite into a spherical orbit, but it won't STAY there without occasional adjustments. The "primary body" - in this case, the Sun - is at one of the two focuses (foci) of the orbit. If the focus is very close to the "center" of the ellipse, then the eccentricity of the orbit (how much it varies from a perfect circle) is close to zero.
As the distance between foci increases the eccentricity increases, or the reverse relationship.
eccentricity = distance between foci ________________ length of major axis
the eccentricity will increase.
The eccentricity of that ellipse is 0.4 .
Planets don't have circular orbits; all orbits are ellipses. A circle has one center, but an ellipse has two focuses, or "foci". The further apart the foci, the greater the eccentricity, which is a measure of how far off circular the ellipse is. Venus has the lowest eccentricity, at 0.007. Neptune is next with an eccentricity of 0.011. (Earth's orbit has an eccentricity of 0.017.) So, Venus has the shortest focus-to-focus distance.
bruh..
Troll
bruh..
Troll
A circle is an ellipse with an eccentricity of zero. Both foci of that ellipse are at the same point. In the special case of the circle, that point is called the "center".
Assuming that the pins represent the foci, the answer is that the eccentricity would be reduced.
The length of the semi-major axis multiplied by the eccentricity.