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An attempt to reconcile the dynamical and radar determinations of the Astronomical Unit

Published online by Cambridge University Press:  14 August 2015

B. G. Marsden
B. G. Marsden*
Affiliation:
Yale University Observatory, New Haven, Connecticut.

Abstract

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It has been found possible to obtain a solution which satisfies both the dynamical and radar investigations without doing any great injustice to any of the observations. It is deduced that the astronomical unit is determined more satisfactorily from the radar bounces off Venus rather than by dynamical methods alone. Some comments are also given concerning the masses of Mercury, Venus and Mars.

Résumé. — L'auteur a pu obtenir une solution qui satisfait aussi bien les observations optiques que celles par radar, sans augmenter considérablement les résidus. Il s'ensuit que l'unité astronomique est déterminée de façon plus satisfaisante à l'aide des échos-radar sur Vénus que par la méthode dynamique seule. L'auteur ajoute quelques remarques sur les valeurs des masses de Mercure, Vénus et Mars.

Zusammenfassung. — Es wurde dis Möglichkeit einer Lösung gefunden, die sowohl die dynamischen als auch die Radar-Untersuchungen befriedigt, ohne dass man dabei in grossen Widerspruch mit irgend einer Beobachtungen gerät. Man kann zeigen, dass die Astronomische Einheit befriedigender aus den Radio-Echos von Venus bestimmt wird als lediglich durch dynamische Methoden. Es werden auch einige Bemerkungen zu den Massen von Merkur, Venus und Erde gemacht.

Резюме. — Автор смог получить решение удовлетворяющие оптические наблюдения также как и наблюдения радаром, не увеличивая значительно остатки. Из этого следует, что астрономическая единица определена более удовлетворительным образом пользуясь радиоэхом Венеры нежели динамическим методом. Автор делает несколько замечаний о массах Меркурий, Венеры и Марса.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 21: The System of Astronomical Constants , 1965 , pp. 225 - 236
Copyright
Copyright © CNRS 1965 

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