Re: Jupiter and Saturn oppositions

On May 16, 6:42 am, David Nakamoto <david.nakam...@xxxxxxxxxxx> wrote:
oriel36 wrote:
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.

No, you misinterpreted my statements. We're amateur astronomers,

Everybody is an astronomer insofar as our existence depends on the
daily and annual cycles of the Earth, a really good astronomer knows
the details of those cycles and how our motions were discovered by
using the observed behavior in the motion of the other planets to
derive our orbital motion and planetary rotation to explain the daily
cycle.





so
most things are expressed as how they appear in the sky, as in "Near the
Sun" meaning when either planet is visible in the sky NEAR THE SUN.

--- Dave- Hide quoted text -

- Show quoted text -

An astronomer looks into the solar system arena whereas astrologers
look up at the sky .You drop the idea of the planets being 'near the
sun' altogether and you start taking into account how the orbital
motion of the Earth sweeps around faster than Saturn and Jupiter in
that great celestial arena.

http://antwrp.gsfc.nasa.gov/apod/image/0112/JuSa2000_tezel.gif

Mr Tezel who supplied that time lapse footage of Jupiter and Saturn as
the faster Earth overtakes those outer planets has done more for
astronomy than anyone as far as I am concerned.The problem is that
there are no astronomers here to appreciate just how dramatic the work
of Copernicus actually is for I have yet to see one person affirm that
we know the Earth annual orbit is derived from orbital comparisons.

Misinterpretation !,I can tell you all about misinterpretation and the
catastrophic consequences of it but I choose to promote the correct
way of expressing the Copernican insights in an era that simply does
not care.




.

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