Astrometry of Pluto from 1969 to 1989

One hundred seventy-five accurate positions of Pluto obtained during 20 years of observations at the Asiago Astrophysical Observatory are compared with the JPL Development Ephemeris DE202. The residuals plotted versus epoch show a systematic trend, with an amplitude up to 1".5 in RA. The run-of...

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Bibliographic Details
Published inIcarus (New York, N.Y. 1962) Vol. 108; no. 2; pp. 174 - 179
Main Authors Gemmo, Alessandra G., Barbieri, Cesare
Format Journal Article Conference Proceeding
LanguageEnglish
Published San Diego, CA Elsevier Inc 01.04.1994
Elsevier
Subjects
Astrometry and reference systems
Astronomy
Earth, ocean, space
Exact sciences and technology
Fundamental astronomy
Fundamental astronomy and astrophysics. Instrumentation, techniques, and astronomical observations
Pluto planet
Astrometry
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Summary:One hundred seventy-five accurate positions of Pluto obtained during 20 years of observations at the Asiago Astrophysical Observatory are compared with the JPL Development Ephemeris DE202. The residuals plotted versus epoch show a systematic trend, with an amplitude up to 1".5 in RA. The run-off in RA found by other authors is confirmed. Twenty-nine previously unpublished positions, measured mainly on plates obtained at ESO-La Silla in the years 1988-1989, are also reported.
ISSN:0019-1035
1090-2643
DOI:10.1006/icar.1994.1051