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Re: AstronomicalData. How can be taken into account when a planet is

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  • Subject: [mg115256] Re: AstronomicalData. How can be taken into account when a planet is
  • From: DrMajorBob <btreat1 at austin.rr.com>
  • Date: Wed, 5 Jan 2011 05:47:47 -0500 (EST)

You can check whether distance to the sun is greater or less than distance  
to the planet, but I think the answer is that your code already takes it  
into account.

Mathematica computes the 2-dimensional position of Venus in the sky; you  
don't need distance - just altitude and azimuth.

Bobby

On Tue, 04 Jan 2011 17:49:27 -0600, Guillermo Sanchez  
<guillermo.sanchez at hotmail.com> wrote:

> Dear friend,
> I have represented the venus analemma for 2 next years as follow
> pos = $GeoLocation
> zone = $TimeZone
> analemmavenus = Table[{
>     AstronomicalData["Venus", {"Azimuth", {2011, 1, i, 6}, pos},
>      TimeZone -> zone],
>     AstronomicalData["Venus", {"Altitude", {2011, 1, i, 6}, pos},
>      TimeZone -> zone]}, {i, 1, 2*365.25, 10}];
> Graphics[{Orange, Point[analemmavenus]}, Frame -> True,
>  FrameLabel -> {"azimut", "altitud"}]
>
> Is it taken into account when the planet is behind the Sun?
> It the answer is negative. How can be taken into account that a planet
> is  behind the Sun?
> HNY
> Guillermo
>


-- 
DrMajorBob at yahoo.com


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