Russell McMahon wrote:

> "Planet" Sedna
> 900 times further from the Sun than Earth
>
>         http://www.spaceref.com/news/viewpr.html?pid=13841
>
> At 3/4 the size of Pluto, if you count Pluto as a planet you (arguably) have
> to count Sedna as one as well.
>
> ____________
>
> 10,000 year year.
> 13 billion kilometres (8 billion miles) away.
> After Mars, it is the second reddest object in the solar system.
> Estimated Sedna is approximately three-fourths the size of Pluto.
> Sedna is likely the largest object found in the solar system since Pluto was
> discovered in 1930.
> Found Nov. 14, 2003.
> At its most distant, Sedna is 130 billion kilometres (84 billion miles) from
> the Sun, which is 900 times Earth's solar distance.
>
> Scientists used the fact that even the Spitzer telescope was unable to
> detect the heat of the extremely distant, cold object to determine it must
> be less than 1,700 kilometres (about 1,000 miles) in diameter, which is
> smaller than Pluto. By combining available data, Brown estimated Sedna's
> size at about halfway between Pluto and Quaoar, the planetoid discovered by
> the same team in 2002.
>
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>

The article I read doesn't consider "Sedna" a planet. But then the
scientists they interviewed don't consider Pluto a planet either!

Jim

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