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Reference Frames for Minor Planets, Comets and Satellites

Published online by Cambridge University Press:  30 March 2016

Elizabeth Roemer
Elizabeth Roemer*
Affiliation:
Department of Astronomy and Lunar & Planetary Laboratory, University of Arizona, Tucson, Arizona 85721, USA

Extract

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Because of relatively large orbital inclinations of some minor planets and many comets, coupled with occasional close approaches to the Earth, it may be necessary to measure positions of these objects anywhere in the sky. Brightnesses range widely, some comets becoming bright enough to be readily visible with the naked eye, while small or remote objects challenge the limit of detectability at the largest telescopes. The brightness of a given object observed over an interval of time also will vary, sometimes over many magnitudes, as geocentric and heliocentric distances change.

Type
Joint Discussions
Information
Highlights of Astronomy , Volume 7: Highlights of Astronomy. As presented at the XIXth General Assembly of the IAU, 1985 , 1986 , pp. 57 - 58
Copyright
Copyright © Reidel 1986

References

de Vegt, Chr.: 1984, in Cometary Astrometry, ed. Yeomans, D. K., West, R. M., Harrington, R. S. Marsden, B. G. (Pasadena: NASA-Jet Propulsion Laboratory, Publication 84-82), pp. 87–92.Google Scholar
Eichhorn, H.: 1974, Astronomy of Star Positions (New York: Ungar), pp. 279–323.Google Scholar
Harrington, R.S.: 1984, in Cometary Astrometry, ed. Yeomans, D. K. West, R. M. Harrington, R. S. Marsden, B. G. (Pasadena: NASA-Jet Propulsion Laboratory, Publication 84–82), pp. 151–153.Google Scholar
Marsden, B. G. and Roemer, E.: 1982, in Comets, ed. Wilkening, L. L. (Tucson: University of Arizona Press), pp. 707–733.Google Scholar
Yeomans, D.K.: 1981, in Modern Observational Techniques for Comets, ed. Brandt, J. C. Donn, B. Greenberg, J. M. Rahe, J. (Pasadena: NASA-Jet Propulsion Laboratory, Publication 81–68), pp. 46–49.Google Scholar
Yeomans, D. K. : 1984, in Cometary Astrometry, ed. Yeomans, D. K. West, R. M. Harrington, R. S. Marsden, B. G. (Pasadena: NASA-Jet Propulsion Laboratory, Publication 84–82), pp. 167–175.Google Scholar