Re: Precession of the equinoxes ?


"OG" <owen@xxxxxxxxxxxxxxxxxxx> wrote in message
news:4r7ihoFq5i5kU1@xxxxxxxxxxxxxxxxx
|
| "Tom Linden" <tom@xxxxxxxxxx> wrote in message
| news:op.tikg1lb1zgicya@xxxxxxxxxx
| >I was looking at some data,
| >
| > http://aa.usno.navy.mil/data/docs/EarthSeasons.html
| >
| > I could not figure out why the duration between Winter solstice and the
| > immediately
| > following perhelion jumps around. We know that the perhelion should
| > advance one
| > day on our calendars about every 71 years. So you would think there
| > should be about
| > a 20 minute increase from one year to the next. Anybody have an
| > explanation?
| >
| > Tom
|
| The most plausible explanation I've seen is that the 'smoothly advancing'
| perihelion you expect is based on the barycentre of the Earth/Moon system,
| but the tabulated perihelion is the actual geocentric one which depends on
| the lunar phase about that time.
|
| An interesting exercise to plot the earth-moon position around this time
| each year.

What does perihelion (closest approach to the sun) have
to do with the Earth-Moon system? Perihelion is not perigee.
Nor is Winter solstice connected with perihelion.

The ONLY reason the calendar is "jumping around" is because there
are not exactly 365 days in a year. When you've grown up you'll
learn about leap years.

Be honest, OG, you fabricated the implausible explanation you've seen
all by yourself, you lying ***, and now you are trying to impress
"We" with your total lack of knowledge, you fuckwit.
If "We" knows that the "perhelion" should advance one day on "our"
calendars about every 71 years then "We" is another blustering bigot
like you.

Androcles


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