Re: Jupiter and Saturn oppositions

On May 14, 7:16 pm, David Nakamoto <david.nakam...@xxxxxxxxxxx> wrote:
Bullseye wrote:
Do Jupiter and Saturn have such dramatic oppositions as Mars? If so
when is the best upcoming time to watch them?

Don't know what you mean by dramatic? If you mean, "Does Jupiter or
Saturn have as dramatic a size increase or brightness increase at
opposition as Mars does?, the answer is no. Such things are determined
by the relative distance differences when the planet is far away as
opposed to when it's nearest to Earth.

For Mars, this is considerable, because Mars' orbit is closer to Earth
than either Jupiter or Saturn.

Very good,you are on the right track


Jupiter and Saturn do look fainter and
smaller when they're near the Sun as opposed to when they're at
opposition, but the differences are minor compared to Mars.

--- Dave

Then you jump the tracks and lapse into geocentricity in speaking of
Jupiter and Saturn being fainter in luminosity when 'near' the Sun.

http://antwrp.gsfc.nasa.gov/apod/image/0112/jupsatloop_tezel.jpg

I do not know what to think of you all.Jupiter and Saturn get
brighter as the Earth orbital motion approaches both planets and fade
as it overtakes them and the orbital distances widen.

The orbital orientation of Jupiter and Saturn as the Earth overtakes
them displays total solar radiation thereby increasing the observed
luminosity and as the Earth' distance widens and the orientations
between the Earth and the outer planets alter,the decrease in
luminosity is entirely expected.

http://www.universetoday.com/am/uploads/2005-0602jupiter-full.jpg

http://www.jb.man.ac.uk/public/Saturn-cassini.jpg

Considering that nobody here recognises the alteration in the Solar
radiation/Orbital shadow boundary ( SR/OS) of the Earth as the
background cause for global climate and hemispherical weather patterns
(seasons),even with images of the Earth from space,it is not suprising
that you drift from a reasonable heliocentric view to a geocentric
view in respect to Jupiter and Saturn.








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