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The reference frame of the ephemerides

  • E. M. Standish (a1), X. X. Newhall (a1), J. G. Williams (a1) and J. O. Dickey (a1)

Abstract

Complete ephemerides of the moon and the four inner planets could be created solely from ranging data alone. Such ephemerides would then be independent from any outside astronomical reference system, and, therefore, would define their own unique reference frame. In fact, this is nearly the case with present-day ephemerides; the accuracy of the ranging data tends to dominate most of the least squares adjustment.

This paper outlines the process of creating the lunar and planetary ephemerides along with the orientation of the ephemerides onto the dynamical equinox. The resulting accuracies of these processes are given and a number of uses for the ephemerides are highlighted.

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Copyright

References

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Chapront-Touze, M. and Chapront, J.: 1983, Astron. Astrophys. 124, 5062.
Dickey, J.O., Newhall, X X and Williams, J.G.: 1985, ‘Earth Orientation from Lunar Laser Ranging and an Error Analysis of Polar Motion Services’, J. Geophys. Res., 90, 93539362.
Dickey, J.O., Newhall, X X, Standish, E.M. and Williams, J.G.: 1987, ‘Reference Frames: Determinations and Connections”, this volume.
Newhall, X X, Standish, E.M. and Williams, J.G.: 1983, ‘DE102: a numerically integrated ephemeris of the Moon and planets spanning forty-four centuries’, Astron. Astrophys. 125, 150167.
Newhall, X X, Williams, J.G. and Dickey, J.O.: 1987, ‘Earth Rotation from Lunar Laser Ranging’, this volume.
Standish, E.M.: 1982, ‘The JPL Planetary Ephemerides’, Cel. Mech. 26, 181186.
Standish, E.M.: 1982, ‘Orientation of the JPL Ephemerides, DE200/LE200, to the Dynamical Equinox of J2000’, Astron. Astrophys. 114, 297302.
Williams, J.G.: 1984, ‘Determining Asteroid Masses from Perturbations on Mars’, Icarus 57, 113.

The reference frame of the ephemerides

  • E. M. Standish (a1), X. X. Newhall (a1), J. G. Williams (a1) and J. O. Dickey (a1)

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