The Earth's rotation: Definition of the pole and of the angle of sidereal rotation

1991 ◽  
Vol 177 (1-2) ◽  
pp. 427-441
Author(s):  
N. Capitaine
2009 ◽  
Vol 5 (S261) ◽  
pp. 69-78
Author(s):  
Nicole Capitaine

AbstractThe celestial Earth's orientation is required for many applications in fundamental astronomy and geodesy; it is currently determined with sub-milliarcsecond accuracy by astro-geodetic observations. Models for that orientation rely on solutions for the rotation of a rigid Earth model and on the geophysical representation of non-rigid Earth effects. Important IAU 2000/2006 resolutions on reference systems have been passed (and endorsed by the IUGG) that recommend a new paradigm and high accuracy models to be used in the transformation from terrestrial to celestial systems. This paper reviews the consequences of these resolutions on the adopted Earth orientation parameters, IAU precession-nutation models and associated nomenclature. It summarizes the fundamental aspects of the current IAU precession-nutation models and reports on the consideration of General Relativity (GR) in the solutions. This shows that the current definitions and nomenclature for Earth's rotation are compliant with GR and that the IAU precession-nutation is compliant with the IAU 2000 definition of the geocentric celestial reference system in the GR framework; however, the underlying Earth's rotation models basically are Newtonian.


1966 ◽  
Vol 25 ◽  
pp. 323-325 ◽  
Author(s):  
B. Garfinkel

The paper extends the known solution of the Main Problem to include the effects of the higher spherical harmonics of the geopotential. The von Zeipel method is used to calculate the secular variations of orderJmand the long-periodic variations of ordersJm/J2andnJm,λ/ω. HereJmandJm,λare the coefficients of the zonal and the tesseral harmonics respectively, withJm,0=Jm, andωis the angular velocity of the Earth's rotation. With the aid of the theory of spherical harmonics the results are expressed in a most compact form.


1992 ◽  
Vol 30 (4) ◽  
pp. 196-196
Author(s):  
Robert Lanni

Peritia ◽  
1997 ◽  
Vol 11 ◽  
pp. 378-381
Author(s):  
D. P. McCarthy

Science ◽  
1943 ◽  
Vol 97 (2510) ◽  
pp. 138-138
Author(s):  
P. KIRKPATRICK

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