Eric Casagrande (21
May 2004)
"Moon Orbit Post"
Hi John & All:
It was with a certain....
ummmm.... how do I say.... "interest", that I read the comments from the
people at the "rumormill" website, concerning the lunar orbit. I'd
like to address some of those issues, so that the Doves aren't led astray
by the information presented.
Now,
for the kicker. Not only did Mr. Loony Moony rise late,
but once again he moved
4 degrees farther west at the point of
rising! Point of rising was
at 124 degrees east, southeast off
of magnetic north.
My
response:
The moon (as
well as the sun), rises in the east.
While it can subsequently rise at a point that is further north
or south
of its previous spot on the eastern horizon,
it cannot
rise further from or to the west (of anything).
Why
is the moon rising at this latitude only 56 degrees
away from due south with less
than 6 weeks to go before
the summer solstice? By now,
that sucker should have been
transiting high in the sky.
Since the moon is supposed to be
in a more or less equatorial
orbit, that means that once the
northern hemisphere begins to
tilt away from the sun, the
moon will disappear from view
all together in no time at all.
My
response:
Actually, the
lunar orbit is ecliptical (following
the path of the sun), not
equatorial (following the path of the earth's projected equator -- called
the "celestial equator").
Why
is the moon rising at this latitude only 56 degrees
away from due south with less
than 6 weeks to go before
the summer solstice? By now,
that sucker should have been
transiting high in the sky.
Since the moon is supposed to be
in a more or less equatorial
orbit, that means that once the
northern hemisphere begins to
tilt away from the sun, the
moon will disappear from view
all together in no time at all.
My
response:
Hate to say it,
but this is the blind leading the blind. Scary too, because people
will feed off it and come back with their own pseudo-theories... which
doesn't help our Christian witness to the unsaved.
As mentioned previously, the
moon follows extremely close to the same path taken by the sun in the sky
(the ecliptic).
While the sun takes a full year to complete one circuit, the moon does
so every 29.5 - 30 days (the lunar cycle).
While
the moon speeds along the ecliptic about every 29.5 days, it will cross
back and forth over the celestial equator twice. During its cycle,
it spends approximately half its time above
the celestial equator, and half its time below
it.
During
spring and summer (between vernal and autumnal equinoxes), it is generally
below the celestial
equator near the time of full moon,
and above it
when closest to new moon.
Sometime
near the mid-point of the vernal and autumnal equinoxes (June 21st), is
when the moon is at its lowest point below the
celestial equator (almost directly opposite the position taken by the sun,
high in the sky).... contrary to the position being espoused by the author.
During
the fall and winter (between autumnal and vernal equinoxes), the moon is
in the exact opposite position -- above the
celestial equator at full moon,
and below it
when closest to new moon.
Similarly, it reaches its highest point
above the celestial equator, at mid-point
between the autumnal and vernal equinoxes (near or about December 21st),
when the sun is nearest its lowest point in the sky.
Now
as to the hour or so difference in moonrise times, I would think he is
likely not applying the charts properly.
See ya in the air,
Eric