Re: Fair orbital question

"Spaceman" <spaceman@xxxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
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"Greg Neill" <gneillREM@xxxxxxxxxxxxxxx> wrote in message
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Imagine a planet in a circular orbit about its star.
Its rotation axis is vertical, that is, exactly
perpendilcular to its orbital plane. James, how would
seasons result?

The eliptical orbit is the basic cause.
The "No tilt" thought would not create no seasons in such a vertical
spun planet if eliptical orbit is a factor.
No tilt would only stop the swap of seasons from
North to South (our winter is thier summer stuff)

In fact though...no tilt needed at all for the seasons
to occur themselves without a swap.
(the tilt causes the swapping only)
So simply...what causes the actual seasons can not be based upon
the tilt alone.....

"Seasons", by convention, implies change in a given
locale over time. The general difference due to
location (from pole to equator to pole) is usually
called "climate". Thus we have polar, temperate,
sub tropical and tropical climates, for examples.

An orbit would have to be quite eccentric compared
to Earth's for it to have a substantial seasonal
effect on climate. For example, James, were you
aware that Perihelion, when the Earth is closest
to the Sun, occurs in January when it is winter
here in the Northern Hemisphere?

Seasons caused by an elliptical orbit would effect
the entire globe equally, so there wouldn't be a
northern versus southern hemisphere alternation.


Take a non variant spinning object,
set it on an eliptical pass around a center point
like Earth does to the sun, and tada...
you will see a difference if you look and do such
like stated.
:)
I will soon make a 3D version when I get my new sofware
and computer...(should be another few days at most..)

While you're at it, calculate the required eccentricity
of the elliptical orbit that could result in seasons
as extreme as we currently experience.
.

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