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SKY4.DOC
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1988-08-12
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995b
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Comets
This part of the program computes the position of
a comet at a given point in time and as seen from a given
location. No cometary catalog is provided, so the user must
enter the usual initial elements. A good source for these
is the "Catalog of Cometary Orbits", by Brian G. Marsden,
Hillside, New Jersey, Enslow Publishers, 1983.
Having run the comet routine, one can return to
the Main Menu and make changes in the time and place
variable, and then come back and run the comet routine
again, without the need to reenter the initial elements.
Cometary positions are provided for the equinox of date, but
also for the equinox of 1950.0, in order to facilitate the
comparison with star catalogs.