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I don't know much about astrology, but the results of at least some of
their computations correspond to the orientation of the heavens back in
Roman times, not now.  Thus, the first point of Aries is not now in
Aries but between Pisces & Aquarius.  This is due to the precession of
the earth's orbit relative to the heavens.  I suppose the Nautical
Almanac might be useful for astrological calculations, but the earth's
orbit would have to be shifted to account for this.  I also don't know
how the current ephemerides for the planets, as opposed to sun, match
up between the two systems.  For astrological computations, it seems it
would be easier to use the old ephemerides rather than our new-fangled
ones.

Fred


On Oct 15, 2004, at 11:38 AM, Alexandre Eremenko wrote:

> Yes,
> I missed this point.
> At the time of Columbus, "Star Almanach"
> (Regiomontan Tables)
> was mainly published for astrologers.
> It would be interesting to know how many
> of them go to astrologers now:-)
>
> I conjecture that there are much more
> astrologers in the world now
> than CelNav igators:-(
>
> So maybe sextant sales are a better indicator
> after all. (Though, according to Celestaire,
> some corporations buy sextants for decoration
> purposes).
>
> Alex.
>

   

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