A numerical solution for precession and nutation of the rigid Earth.
A numerical solution for the !uni-solar precession and nutation of the rigid Earth is obtained and compared with the result from the analytical theories which are the basis of the current IAU precession and nutation formulae. We follow a simplified scheme of numerical calculation by modifying the equations of motion and thus avoiding a small step numerical integration. Some errors are found in the long periodic region of nutation in the current IAU theory. Keywords: Precession and nutation, numerical integration, astronomical ephemeris.
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| Main Authors: | , |
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| Format: | Journal Contribution biblioteca |
| Language: | Japanese |
| Published: |
1987
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| Online Access: | http://hdl.handle.net/1834/16156 |
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