The real value of Mercury's perihelion advance

Details The real value of Mercury's perihelion advance The real value of Mercury's perihelion advance

Mar 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.320...39n&link_type=abstract

Nature (ISSN 0028-0836), vol. 320, March 6, 1986, p. 39-41. CNR-supported research.

Astronomy and Astrophysics

Astronomy

14

Mercury (Planet), Perihelions, Relativity, Solar Orbits, Orbital Elements, Mercury (Planet), Perihelion, Astronomy, Orbits, Theoretical Studies, Motion, Celestial Mechanics, Radar Methods, Parameters, Calculations, Procedure, Techniques, Analysis

Scientific paper

An apparent uncertainty in the value of the theoretical prediction for the perihelion advance of the orbit of Mercury within general relativity, as cited in various sources, is investigated. The origin of this discrepancy is an article by Clemence (1947), who used unconventional values for the astronomical unit and the speed of light in his calculation of the predicted advance. Since that time, virtually everyone has followed suit. Although the current value of the prediction, using the best accepted values for the astronomical constants and for the orbital elements of Mercury, is 42.98 arcsec per 100 yr, there is a preponderance of citations over the past 25 yr of Clemence's value of 43.03 arcsec per 100 yr. Here, the accurate value is derived and the source of Clemence's value is uncovered.

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