Astronomisches Rechen-Institut Heidelberg

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ARI-Heidelberg Mitteilungen Serie B, No. 28

Author(s): Laubscher, R.E.
Title: The Motion of Mars: 1751-1969
Source: Astron. Astrophys. 13, 426-436
Year: 1971
Abstract: Clemence's (1949 and 1961) new theory for the motion of Mars, along with Newcomb's (1898, Pt. I) Tables of the Sun, are compared with all available meridian and radar ranging observations of Mars. The meridian observations discussed cover the time period 1751 to 1969. It is shown that Clemence's theory is wholly adequate for representing the meridian observations of Mars, and definitive mean elements of the orbit of the planet are derived. Through the observed motion of the perihelion of Mars' orbit, the formalization of general relativity used by Clemence in his theory is shown to be correct, within the errors of the observations. The long-standing problem of accurately determining the mass of Venus from observations of Mars is resolved, and a new value for that mass presented. New determinations of the corrections to the obliquity of the ecliptic, the mean longitude of the earth, the equinox and equator point of the adopted star reference system, and their rates, are also presented.
Preprint issued:
Remarks: Summary of a dissertation presented to Yale University

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