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Re: Using any star for a lunar
From: Frank Reed CT
Date: 2005 Mar 13, 18:50 EST
From: Frank Reed CT
Date: 2005 Mar 13, 18:50 EST
Bill you wrote:
"I have yet to try lunars, but am slowly moving in that direction. If
I
understand the basic concept, we are looking at two bodies that cross the
sky at different rates; Sun 15d/hr, Moon 14d 19', stars 15d 02'.5, and
planets. Perhaps a question born from ignorance, but could the Sun (close
to ecliptic) and Moon be used as well?"
understand the basic concept, we are looking at two bodies that cross the
sky at different rates; Sun 15d/hr, Moon 14d 19', stars 15d 02'.5, and
planets. Perhaps a question born from ignorance, but could the Sun (close
to ecliptic) and Moon be used as well?"
Relative to the stars along its path through the sky, the Moon's rate of
motion is 33 minutes of arc per hour on average. It can be as high as 38' per
hour at perigee and as low as 28' per hour at apogee. Since the Sun and planets
are moving relative to the stars and usually in the same direction as the Moon,
the rate of change of the distance between the Moon and the Sun, for example, is
a little bit less than the rate for Moon-star distances, but it's not
significant in the end.
-FER
42.0N 87.7W, or 41.4N 72.1W.
www.HistoricalAtlas.com/lunars
42.0N 87.7W, or 41.4N 72.1W.
www.HistoricalAtlas.com/lunars
