Proper initial conditions for long-term integrations of the solar system

Details Proper initial conditions for long-term integrations of the solar system Proper initial conditions for long-term integrations of the solar system

2001-12-12

arxiv.org/abs/astro-ph/0112266v2

Astron.Astrophys. 383 (2002) 729-737

Astronomy and Astrophysics

Astrophysics

14 pages, accepted for publication in A&A. v2: TeX file instead of PS generated from word proc. as before

Scientific paper

10.1051/0004-6361:20011791

An optimization program is used to re-adjust the initial conditions, in order to reproduce as closely as possible the predictions of a complete ephemeris by using simplified equations of motion in the numerical integration. The adjustment of the initial conditions is illustrated in the transition from the DE406 complete long-range ephemeris to a Newtonian model considering only the Sun and the four major planets. It is also used to best reproduce this same DE406 ephemeris, based on post-Newtonian equations for a system of mass points and including the Moon and asteroids, by using a Newtonian calculation corrected by the Schwarzschild effects of the Sun and restricted to the ten major bodies of the solar system.

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