Its angular diameter at mean distance is 31′ 5″, or, say, just over ½°.
That the mean distance of the planet cannot be less than 35 or more than 37.9.
When the angle is 90°, the effect is least, and the mean distance least.
The mean distance apart will be about twenty to twenty-five miles.
Vulcan, the smallest and innermost of the planets, circles the sun with great rapidity at a mean distance of twenty million miles.
The square of the time of revolution (or year) of each planet is proportional to the cube of its mean distance from the sun.
A decrease in excentricity means an increase in mean distance of the earth from the sun.
The whole length of the land is shut in by two ranges of hills, roughly parallel at a mean distance of about twelve miles.
It has been calculated that the whites advance every year a mean distance of seventeen miles along the whole of his vast boundary.
Having determined the periodic time, the mean distance, or semi-axis major, is found by Kepler's third law to be 10.34.