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Early Observations and Modern Ephemerides

Published online by Cambridge University Press:  30 March 2016

E.M. Standish Jr
E.M. Standish Jr*
Affiliation:
Caltech/JPL, Pasadena, U.S.A.

Abstract

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There is a great variety of planetary and lunar observations recorded throughout history. Even today, some of these are useful for the improvement of ephemerides, though one must use a lot of judgment and caution - for surprising reasons. Five different sets of observations are presented, each with a story and a lesson: Galileo’s observations of Neptune, Lalande’s observations of Neptune, Williams’ measurements of the 1780 solar eclipse, Robertson’s 1811 transit timings, and solar eclipses in general.

Type
II. Joint Discussions
Information
Highlights of Astronomy , Volume 12: Highlights of Astronomy. As presented at the XXIVth General Assembly of the IAU, 2000 , 2002 , pp. 326 - 329
Copyright
Copyright © Astronomical Society of Pacific 2002

References

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Standish, E.M. 1993, “Meridian Circle Observations of the Planets”, in Galactic and Solar System Optical Astrometry, eds Morrison and Gilmore (Cambridge: Cambridge University Press)Google Scholar
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Standish, E.M., & Nobili, A.M. 1997, “Galileo’s Observations of Neptune”, Baltic Astronomy, 6, 99–106 Google Scholar
Standish, E.M. 1999, “The Eclipse of 1780: A Revisit”, in Anni Mirabiles: a Symposium Celebrating the 90th Birthday of Dorrit Hoffleit, eds Philip, , Altena, van, Upgren, , eds (Schenectady, NY: L. Davis Press, Inc.)Google Scholar