March 16, 2004

Planetoid Sedna

Sigh. It looks as if we don't get a real 10th planet after all. The thing is about the size of Pluto all right, but has a highly eccentric orbit with a period of about 10,000 years. Just more Kupier belt junk, although I'm sure the asteroid chasers will have a lot of fun with it. For what it's worth, right now it seems to be in Taurus (scroll down to message 18.)

Posted by pvcneop at March 16, 2004 09:29 AM

This looks like a nice piece of evidence to back up the hypothetical Oort Cloud although Sedna is a bit closer to the sun than the Oort Cloud is predicted to be. The orbit would fit in with an Oort cloud object.

Also, Pluto has had its planetary status nearly revoked a few times already due to its small size. Sedna is about 3/4 the size of Pluto so I guess you are right about it not being the 10th planet after all.

Posted by: Chris at March 16, 2004 01:53 PM

Sedna does not exist in the kuiper belt

Posted by: Alix at December 1, 2004 11:40 PM