Hostname: page-component-78c5997874-t5tsf Total loading time: 0 Render date: 2024-11-19T11:34:44.295Z Has data issue: false hasContentIssue false
  • English
  • Français

Observed and Theoretical Values of the Nutations

Published online by Cambridge University Press:  12 April 2016

R.O. Vicente
R.O. Vicente*
Affiliation:
Dept. Applied Mathematics, Faculty of Sciences, Lisbon, Portugal

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We are here concerned with the nutations that appear in the motion of the Earth because of the existence of the external forces due to the Sun and Moon, that is, the forced nutations.

We can consider the nutations divided in two groups from the point of view of their values and the precision attained by astronomical observations. The first group comprises the nutations that have values greater than 1″ and in this group we have the nutation of period 18.6 yr called the principal nutation and the value of this nutation in obliquity is called the constant of nutation. The second group comprises the nutations with values smaller than 1″ and corresponds to the great majority of all other nutations.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 9: The IAU System of Astronomical Constants , October 1971 , pp. 186 - 189
Copyright
Copyright © Reidel 1971

References

Explanatory Supplement to the Astronomical Ephemeris: 1961, H.M. Stationery Office, London.Google Scholar
Fedorov, E. P.: 1958, ‘Nutation as Derived from Latitude Observations’, Symposium on the Rotation of the Earth and Atomic Time Standards, X General Assembly IAU, Moscow.Google Scholar
Hattori, T.: 1951, Publ. Astron. Soc. Japan 3, 126.Google Scholar
Jeffreys, H. and Vicente, R. O.: 1957, Monthly Notices Roy. Astron. Soc. 117, 142.Google Scholar
Kulikov, K. A.: 1956, Fundamental Astronomical Constants, Moscow.Google Scholar
Molodensky, M. S.: 1961, Comm. Obs. Roy. Belg. 188, 25.Google Scholar
Morgan, H. R.: 1943, Astron. J. 50, 125.Google Scholar
Newcomb, S.: 1895, Astronomical Constants, Gov. Printing Office, Washington.Google Scholar
Przybyllok, E.: 1920, Zentralbureau Intern. Erdmessung, No. 36.Google Scholar
Spencer-Jones, H.: 1939, Monthly Notices Roy. Astron. Soc. 99, 211.CrossRefGoogle Scholar
Vicente, R. O.: 1965, Bull. Astron. 25, 109.Google Scholar
Vicente, R. O.: 1969, Marées Terrestres, Bull. Inf. 53, 2489.Google Scholar
Vicente, R. O. and Yumi, S.: 1969, Publ. Int. Lat. Obs. Mizusawa 7, 41.Google Scholar
Woolard, E. W.: 1953, Astron. Pap. Am. Ephem. Wash. 15, Part I.Google Scholar