Earth Rotation in the Hipparcos Reference Frame

Details Earth Rotation in the Hipparcos Reference Frame Earth Rotation in the Hipparcos Reference Frame

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996cemda..66..115v&link_type=abstract

Celestial Mechanics and Dynamical Astronomy, Volume 66, Issue 1, pp.115-122

Astronomy and Astrophysics

Astronomy

4

Scientific paper

New determination of the Earth orientation parameters (EOP), based on optical astrometry observations since the beginning of the century, is now under preparation by the Working group established by Commission 19 of the IAU. The Hipparcos catalog is to define the celestial reference frame in which the new series of EOP are to be described, The novelties of the prepared solution are the higher resolution (5 days) and more parameters estimated from the solution (celestial pole offsets, rheological parameters of the Earth, certain instrumental constants). The mathematical model of the solution is described, and the results based on the observations made with 46 instruments at 29 observatories and a preliminary Hipparcos catalog are presented.

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