INPOP06: a new planetary ephemeris

Astronomy and Astrophysics – Astronomy

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Scientific paper

INPOP06 is the new numerical planetary ephemeris developed at the IMCCE-Observatoire de Paris. INPOP (Intégrateur numérique planétaire de l' Observatoire de Paris) is a numerical integration of the motion of the nine planets and the moon fitted to the most accurate avalaible observations. It also integrate the motion of 300 perturbing main belt asteroids, the rotation of the Earth and the moon libration. We used more then 45000 observations including the last tracking data of the MGS and Mars Odyssey missions. The accuracy obtained with INPOP06 is comparable to the last versions of the JPL DE solutions (DE414, Standish 05) and of the EPM solutions (EPM04, Pitjeva 05). The interesting point with INPOP is the complete consistency of the dynamical modelling since Earth rotation, moon libration and asteroid orbits are integrated with the main equations of the planetary motions. Two versions of INPOP exists: one using the TDB time scale, the other based on the TCB time scale.

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