Re: Astronomical Data, property "position"
- To: mathgroup at smc.vnet.net
- Subject: [mg128647] Re: Astronomical Data, property "position"
- From: Bob Hanlon <hanlonr357 at gmail.com>
- Date: Tue, 13 Nov 2012 00:04:38 -0500 (EST)
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- References: <20121112080648.2B4F2690C@smc.vnet.net>
AstronomicalData["Sun", "Position"]
{0, 0, 0}
AstronomicalData["ProximaCentauri", "Position"]
{-1.453968904807471*^16, -2.431970861573526*^16,
-2.8100702162299028*^16}
From
http://reference.wolfram.com/mathematica/ref/AstronomicalData.html
Under More Information:
"Position" {x, y, z} position in heliocentric coordinates in meters
...
Positions are given in FK5 heliocentric coordinates in the equinox of
the date used.
From
http://en.wikipedia.org/wiki/Catalogues_of_Fundamental_Stars
"The Fifth Fundamental Catalogue (FK5) was a 1988 update of FK4 with
new positions for the 1,535 stars. It was superseded by the
quasar-based International Celestial Reference Frame (ICRF)."
AstronomicalData["ProximaCentauri", "Declination"]
-62.6814`6.
AstronomicalData["ProximaCentauri", "RightAscension"]
14.4966`6.
AstronomicalData["ProximaCentauri", "Distance"]
3.9957169756`5.698970004336013*^16
Bob Hanlon
On Mon, Nov 12, 2012 at 3:06 AM, <thebro95 at gmail.com> wrote:
> Hello everybody,
>
> I'm doing a programme of Positional Astronomy and I would like to know if you could help me with this command (for any star):
>
> AstronomicalData["ProximaCentaury", "Position"]
>
> It gives some axial heliocentric coordinates of the star, but I do not have any idea about where every axis points.
>
> Thank you for your help!
>
- References:
- Astronomical Data, property "position"
- From: thebro95@gmail.com
- Astronomical Data, property "position"