Next Simultaneous Transit of Venus and Mercury

Another fascinating find:

http://www.fourmilab.ch/documents/canon_transits/

This resourceful chap has not only computed the next (extremely rare)
simultaneous transit of Venus and Mercury, but also plotted the excursions
of the Solar System barycentre from the centre of the sun over time:

Quote
"The Sun, then, not only has an orbit within the Solar System, almost TWO
THIRDS OF THE TIME the point it's orbiting about is outside the Sun! This
makes one wonder just how far the barycentre ever gets from the centre of
the Sun. I also kept track of minimum and maximum barycentre distances (both
local and global--whenever the sign of the first derivative of the
barycentre distance changes). At the all-time maximum for the period of the
integration in the year 86859, the barycentre will be 2.236 solar radii from
the centre of the Sun. In other words, if you focused on the barycentre and
watched the Sun in its orbit, it would be swinging around a point 1.236
solar radii outside the Sun."
Unquote

I wonder how this might affect Copernican heliocentric astronomy against a
fixed stellar background ...

Let me re-define a transit from the pathetic sub-geocentric description
given in that article as representative of a dominant empiricist view
-

" In [ celestial sphere] astronomy, a planetary transit is when a
planet closer to the Sun passes in front of the Sun's disc as seen from
a more distant planet."

In heliocentric astronomy,a planetary transit is when a faster moving
planet, in an inner orbit, overtakes the slower moving Earth with the
central parent star as a backdrop -

http://www.vt-2004.org/mt-2003/mt-20...999-normal.jpg

The Sun is not a disk,along with the motions of the Earth it makes
existence possible,even your miserable existence..Cultivate your
understandings using contemporary imaging rather than using the
terminology of the 17th century powdered wigs wgho never appreciated
what these events are in heliocentric terms.

Thanks for posting,you make them look like fools even if you do not
mean to and I enjoy presenting this easy to understand material from
the viewpoint of an astronomer from the heliocentric tradition of
Copernicus,Galileo and Kepler.







TeaTime wrote:
Another fascinating find:

http://www.fourmilab.ch/documents/canon_transits/

This resourceful chap has not only computed the next (extremely rare)
simultaneous transit of Venus and Mercury, but also plotted the excursions
of the Solar System barycentre from the centre of the sun over time:

Quote
"The Sun, then, not only has an orbit within the Solar System, almost TWO
THIRDS OF THE TIME the point it's orbiting about is outside the Sun! This
makes one wonder just how far the barycentre ever gets from the centre of
the Sun. I also kept track of minimum and maximum barycentre distances (both
local and global--whenever the sign of the first derivative of the
barycentre distance changes). At the all-time maximum for the period of the
integration in the year 86859, the barycentre will be 2.236 solar radii from
the centre of the Sun. In other words, if you focused on the barycentre and
watched the Sun in its orbit, it would be swinging around a point 1.236
solar radii outside the Sun."
Unquote

I wonder how this might affect Copernican heliocentric astronomy against a
fixed stellar background ...

In message , TeaTime
writes

I wonder how this might affect Copernican heliocentric astronomy against a
fixed stellar background ...


Was that aimed at you-know-who?

"Jonathan Silverlight" wrote
in message ...
In message , TeaTime
writes

I wonder how this might affect Copernican heliocentric astronomy against a
fixed stellar background ...


Was that aimed at you-know-who?

I'm sure I can't imagine who you refer to, Jonathan ... I was merely musing
about our central star, swinging around a 3 million km diameter circle (with
us orbiting the same baryentre admittedly, still bathed in its glow). Since
yon barycentre represents the Solar System's centre of mass, one assumes it
maintains a fixed trajectory with respect to the stellar background and that
it is only the sun and planets' distance from said point which varies over
time according to the relative angular and radial disposition of the
planets. I suppose the sun still disappears each night and reappears the
very next day, only to be seen bobbing up and down over the horizon
throughout the year. Thank god for the relative view - be hopeless trying
to grow prize toms without it (I favour watering mine with human urine, but
don't tell her indoors for god's sake) )

Jonathan Silverlight wrote:
In message , TeaTime
writes

I wonder how this might affect Copernican heliocentric astronomy against a
fixed stellar background ...


Was that aimed at you-know-who?

After the more immediate eating/sleeping cycle of axial rotation,the
next greatest influence on humanity is cyclical temperature
variations due to the orbital cycle.

Considering that the orbital path of the Earth around the Sun causes
the orbital shadow/solar radiation to drift longitudinally and
latitudinally against axial orientation (defined by axial rotation),the
dumb notion of varying the axial tilt to the central parent star looks
primitive,at least with modern imaging.
I suppose all those years of working with sunrise/sunset are now
working against people in terms of solar radiation.They see the Sun
disappear over the horizon taking its light with it and can no ways
bring themselves to grasp what is actually occuring.

So,in an era which badly needs an accurate view of the astronomical
input into global climate which can be reduced to hemispherical
weather pattern (seasons) ,scientists can't even give the correct
perspective for cyclical patterns let alone variations in these
patterns.

The person who truly enjoys working with observed phenomena based on
the motions of the Earth such as the changing relationship between
orbital orientation and fixed axial orientation will not only be
helping themselves,they will help mesh astronomy with climatology
accurately for the first time.Give me a red sky and I will give you
the gorgeous motions of the Earth as a location sweeps from direct
solar radiation into the orbital shadow -

http://www.tech-writer.net/images/photos/SunsetSky1.jpg

http://www.aoml.noaa.gov/hrd/Storm_p...erminator1.JPG

http://wmthemes.jessanderson.org/sht...minator_ss.jpg

With your silence you all look very small and I would not care if you
ever figured out how to work the motions in solar radiation locally,at
least for climatological purposes.Rather than stepping out into the
majestic astronomical arena you are mesmerised by the mechanical peep
show of celestial sphere geometry.