Hourly Forecast Detailed. 1  0am:The Iron Mountain, MI forecast for Apr 14 is 37 degrees and Fog. There is 73 percentage chance of rain and 1 mph winds from the Southeast. 2  3am:The Iron Mountain, MI forecast for Apr 14 is 34 degrees and Fog. There is 71 percentage chance of rain and 1 mph winds from the Southeast.
4.1 Introduction. The Moon revolves around Earth in an elliptical orbit with a mean eccentricity of 0.0549. Thus, the Moon's center-to-center distance from Earth varies with mean values of 363,396 km at perigee to 405,504 km at apogee.t illustrates the Moon's orbit around Earth and Earth's orbit around the Sun. The relative sizes and distances of the Sun, Moon, and Earth as well as the eccentricity of the Moon's orbit are all exaggerated for clarity. The major axis of the Moon's orbit marks the positions of perigee and apogee.
The Moon orbits Earth in the prograde direction and completes one revolution in approximately 27.322 days (a sidereal month). Earth and the Moon orbit about their barycentre (common center of mass), which lies about 4600 km from Earth's center (about three quarters of the radius of Earth).On average, the Moon is at a distance of about 385000 km from Earth's center, which corresponds to about 60 Earth radii.With a mean orbital velocity of 1.023 km/s, the Moon moves relative to the stars each hour by an amount roughly equal to its angular diameter, or by about 0.5Â°.arth and the Moon orbit about their barycentre (common center of mass), which lies about 4600 km from Earth's center (about three quarters of the radius of Earth). On average, the Moon is at a distance of about 385000 km from Earth's center, which corresponds to about 60 Earth radii.