Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977a%26as...30..361v&link_type=abstract
Astronomy and Astrophysics Supplement Series, vol. 30, Dec. 1977, p. 361-367. In French.
Astronomy and Astrophysics
Astrophysics
10
Ephemerides, Galilean Satellites, Jupiter (Planet), Astronomical Coordinates, Chebyshev Approximation, Tables (Data)
Scientific paper
The international meeting on astronomical ephemeris held in Paris in 1911 had decided to give the management of the ephemerides of Jupiter's four Galilean satellites to the Bureau des Longitudes from Sampson's (1910) tables. Up to now, the ephemerides printed in Connaissance des Temps are computed from Sampson's tables according to Andoyer's (1915) method. From these publications, one has to undertake a lengthy calculation to find out the position of a given satellite. The new ephemerides are calculated directly from the results of Sampson's theory and not from his tables. The approximation employed is realized by Chebyschev polynomials. The Chebyschev coefficients are tabulated which give, after a short calculation, the differential equatorial coordinates of the satellites. The new tables are very simple to use and give a better precision.
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