Peck, William G. (William Guy), 1820-1892 · New York, Chicago, A. S. Barnes & company · leaf 96
Equation (3) enables us to find the mean distance of a body fromthe earth when we know its mean equatorial parallax and the radiusof the earth. 69. Heliocentric parallax is the change that the ap-parent direction of a body would experience, if the point ofobservation were transferred from the… … THE EARTH. 91 trie parallax of M, and it is obviously equal to the anglesubtended by the earths radius-vector SE as seen from M. Explanation. E represents the centre of theearth. S that of the suu, and M that of a heavenlyhocly, say Mars. The directions in which the earthand Mars are moving are…
Astronomy
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
