Accurate analytical representation of Pluto modern ephemeris |
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| Authors: | Sergey M Kudryavtsev Natalia S Kudryavtseva |
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| Institution: | 1.Sternberg Astronomical Institute of Moscow State University,Moscow,Russia |
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| Abstract: | An accurate development of the latest JPL’s numerical ephemeris of Pluto, DE421, to compact analytical series is done. Rectangular
barycentric ICRF coordinates of Pluto from DE421 are approximated by compact Fourier series with a maximum error of 1.3 km
over 1900–2050 (the entire time interval covered by the ephemeris). To calculate Pluto positions relative to the Sun, a development
of rectangular heliocentric ICRF coordinates of the Solar System barycenter to Poisson series is additionally made. As a result,
DE421 Pluto heliocentric positions by the new analytical series are represented to an accuracy of better than 5 km over 1900–2050. |
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