If it's not a planet or a star, what is it?

Have just found this on the net maybe Planet X ? Your opinions would be great!!

Sorry stuffed the link for the page:

www.msnbc.msn.com...

www.space.com...anothe r link for you top look at:

It's 40 LY away, so no, it could not be related to our solar system.

It is a brown dwarf, a failed star; almost looks like a giant planet

Brown dwarfs are the oddballs of the cosmos, more massive than planets but not heavy enough to generate the thermonuclear fusion that powers real stars. Now astronomers have found the coldest brown dwarf to date.

The failed star might represent a new class of objects that are a missing link between planets and stars.

The mass of brown dwarfs is usually less than 70 Jupiter masses. In contrast to a star like our sun, which spends most of its lifetime burning hydrogen and keeping a constant internal temperature, a brown dwarf spends its lifetime getting colder and colder.

Source

For heavens sake what is this obsession with Planet X? Is there something signficant about it? By the way that brown dwarf is beyond the beloved zeta reticuli system, hence it can't possibly be apart of our solar system!

[edit on 16-4-2008 by timelike]