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

• To: mathgroup at smc.vnet.net
• 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
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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