that is very interesting.
all these years we thought it was 9.

 

hmm, interesting. a 10th planet

 

 

[B]plan

 

wow! this stuff completly blows me away!
always wondered if there was any other planets...its very small though!

 

[QUOTE]Originally posted by no_really
It's not a planet, per se.

 

[QUOTE]Originally posted by Grimace

 

[QUOTE]Originally posted by Russian

 

First of all i asure you i am not the only one that classifies it as a planet. Call it a minor planet if you will. Call it a very large asteriod if you will. *which most planets are anyways).

And acording to the site you just provided "the largest asteriod by far is ceres" and it is only 933km in diameter. About 575 miles. Sedna is twice as large.

 

I just found this press release from NASA regarding Sedna:

http://science.nasa.gov/headlines/y2004/16...htm?list25890

In it they refer to Sedna as a "planatoid".

Here's a comparison chart: