12am:The Iron Mountain, MI forecast for Apr 14 is 53 degrees and Overcast. There is 49 percentage chance of rain and 11 mph winds from the Southeast. 3pm:The Iron Mountain, MI forecast for Apr 14 is 53 degrees and Patchy rain possible. There is 49 percentage chance of rain and 11 mph winds from the Southeast.
The earth's orbit around the sun is elliptical, so the earth moves at a constantly varying velocity as it moves closer to the sun (perihelion) or further away (aphelion). The earth's angular velocity (speed of movement) is considerably greater at perihelion than it is at aphelion.he earth gets through 10% of its path in the same length of time whether it is at aphelion (moving slowly) or perihelion (moving fast). The absolute speed at which the earth moves varies, but the rate at which it orbits is constant.
Earth moves around the Sun in an elliptical orbit. Earth's orbit is almost a perfect circle; its eccentricity is only 0.0167! Pluto has the least circular orbit of any of the planets in our Solar System. Pluto's orbit has an eccentricity of 0.2488. The Sun isn't quite at the center of a planet's elliptical orbit. An ellipse has a point a little bit away from the center called the focus. The Sun is at the focus of the ellipse. Because the Sun is at the focus, not the center, of the ellipse, the planet moves closer to and further away from the Sun every orbit.