Equinox alignment

http://en.wikipedia.org/wiki/Image:Seasonearth.png

Within a few days the changing orbital orientation of the Earth (due to
its orbital motion) will run parallel with terrestial axial longitudes
at dawn and dusk.

The Equinox astronomically constitutes a unique event at dawn and dusk
where orbital motion can be enjoyed in isolation as axial longitudes
passing through the line signifying the Earth's orbital direction will
mesh briefly.

All other times of the year,apart from the Equinox,axial and orbital
orientations are scrambled and no alignment occurs.The understanding of
this is contingent on the recognition of orbital motion and orientation
as being isolated from axial rotation and its fixed orientation.

It also has wonderful consequences beyond recognition of the brief
alignment.

oriel36 wrote:
http://en.wikipedia.org/wiki/Image:Seasonearth.png

Within a few days the changing orbital orientation of the Earth (due to
its orbital motion) will run parallel with terrestial axial longitudes
at dawn and dusk.

The Equinox astronomically constitutes a unique event at dawn and dusk
where orbital motion can be enjoyed in isolation as axial longitudes
passing through the line signifying the Earth's orbital direction will
mesh briefly.

All other times of the year,apart from the Equinox,axial and orbital
orientations are scrambled and no alignment occurs.The understanding of
this is contingent on the recognition of orbital motion and orientation
as being isolated from axial rotation and its fixed orientation.

It also has wonderful consequences beyond recognition of the brief
alignment.


What I think you meant to say--

On Sept 22 22:23 UTC

o Earth's terminator will run thru the north and south poles,
lining up with one's local meridian.

o Day and night will be pretty equal at most places on the Earth.

o The Sun will tend to rise due east and set due west around that date.

"Jim Townsend" wrote in message
...
oriel36 wrote:

http://en.wikipedia.org/wiki/Image:Seasonearth.png

Within a few days the changing orbital orientation of the Earth (due to
its orbital motion) will run parallel with terrestial axial longitudes
at dawn and dusk.

In other words, it's the first day of fall :-)


Obviously, the concept of K.I.S.S. (keep it simple, silly) escaped him.

"oriel36" wrote in message
ups.com...
http://en.wikipedia.org/wiki/Image:Seasonearth.png

Within a few days the changing orbital orientation of the Earth (due to
its orbital motion) will run parallel with terrestial axial longitudes
at dawn and dusk.

The Equinox astronomically constitutes a unique event at dawn and dusk
where orbital motion can be enjoyed in isolation as axial longitudes
passing through the line signifying the Earth's orbital direction will
mesh briefly.

All other times of the year,apart from the Equinox,axial and orbital
orientations are scrambled and no alignment occurs.The understanding of
this is contingent on the recognition of orbital motion and orientation
as being isolated from axial rotation and its fixed orientation.

It also has wonderful consequences beyond recognition of the brief
alignment.


What kind of asshole are you?

Don't you recognise

" ...cataloguers...blah blah "

Sam ?

jc

Just another orbit around the Sun for me.

Sam Wormley wrote:


What I think you meant to say--

On Sept 22 22:23 UTC

o Earth's terminator will run thru the north and south poles,
lining up with one's local meridian.

o Day and night will be pretty equal at most places on the Earth.

o The Sun will tend to rise due east and set due west around that date.

To Sam

The Equinox is a unique astronomical event and only at dawn and dusk.It
is a great opportunity to appreciate the great Copernican insight of
orbital motion and orientation for it was the spectacular insight of a
faster Earth moving in an inner orbital circuit that simultaneously
accounted for retrograde motion and inferred a common heliocentric axis
for ourselves and the other planets.

http://www.opencourse.info/astronomy...turn_retro.gif


At dawn and dusk on the Equinox ,this is the only time over the course
of an annual orbit that the heliocentric orbital direction can be
discerned against the direction of our motion around the Milky Way axis
but as you and your colleagues are still stuck with sunrise/sunset and
the Sun's trajectorY,unfortunately you would not this complimentary
addition to Copernican/Keplerian heliocentricity.

http://en.wikipedia.org/wiki/Image:Seasonearth.png

Thankfully meteorologists are beginning to drop your hemispherical
variable axial tilt (on which your imagined variation in the trajectory
of the Sun against the Equator depends) and are treating yclical
seasonal changes by treating both hemispheres as a whole.

Perhaps someday they may even take account of the actual astronomical
mechanism for cyclical seasonal changes by dropping references to the
Sun off the Earth's axis/Equator but they are required to become
heliocentrists first.

Excuse me while I go outside and enjoy a spectacular natural wonder
that is the Equinox and only at the Equinox.

George wrote:
"Jim Townsend" wrote in message
...
oriel36 wrote:

http://en.wikipedia.org/wiki/Image:Seasonearth.png

Within a few days the changing orbital orientation of the Earth (due to
its orbital motion) will run parallel with terrestial axial longitudes
at dawn and dusk.

In other words, it's the first day of fall :-)


Obviously, the concept of K.I.S.S. (keep it simple, silly) escaped him.

There is not the slightest trace of anything remotely resembling an
appeal here,it is a wonderful astronomical extension of Copernican
heliocentricity with many different avenues a person can take.

Perhaps you consider it the first day of autumn but that is a
hemispherical attribute for somebody else on the planet will say it is
the first day of spring.

I lament the tendency towards geocentricity even as this forum has the
term 'astro' assigned to it.Your are confident in your 'first day of
fall' and you are welcomne to it.

Behind the Equinox is a special alignment that is only astronomical in
content and character.

oriel36 wrote:
George wrote:

"Jim Townsend" wrote in message
...

oriel36 wrote:


http://en.wikipedia.org/wiki/Image:Seasonearth.png

Within a few days the changing orbital orientation of the Earth (due to
its orbital motion) will run parallel with terrestial axial longitudes
at dawn and dusk.

In other words, it's the first day of fall :-)


Obviously, the concept of K.I.S.S. (keep it simple, silly) escaped him.


There is not the slightest trace of anything remotely resembling an
appeal here,it is a wonderful astronomical extension of Copernican
heliocentricity with many different avenues a person can take.

Perhaps you consider it the first day of autumn but that is a
hemispherical attribute for somebody else on the planet will say it is
the first day of spring.

I lament the tendency towards geocentricity even as this forum has the
term 'astro' assigned to it.Your are confident in your 'first day of
fall' and you are welcomne to it.

Behind the Equinox is a special alignment that is only astronomical in
content and character.


Typically astronomers denote the Autumnal Equinox as the point when
the declination of the Sun becomes negative in equatorial coordinates
in the epoch of date.

This year that occurs Sept 22 22:23 UTC

"oriel36" wrote in
oups.com:

To Sam

The Equinox is a unique astronomical event and only at dawn and dusk.It
is a great opportunity to appreciate the great Copernican insight of
orbital motion and orientation for it was the spectacular insight of a
faster Earth moving in an inner orbital circuit that simultaneously
accounted for retrograde motion and inferred a common heliocentric axis
for ourselves and the other planets.

Wrong. The equinox occurs at specific time, twice a year when the Sun's
declination passes through zero.

Klazmon.



SNIP fuzzy explanation