sedna

[brazilian_and_proud]

Is sedna even in the oort cloud or is it a rogue "planet" coming from somewhere else in the universe????

 

[harmonicaman]

CalTech Astronomer Dr. Michael Brown, who discovered Xena and was a member of the team which spotted Sedna, would argue that yes; Sedna is a part of the Oort cloud.<br /><br />Futher reading from Dr. Brown at Caltech .

 

[CalliArcale]

Of course, being part of the Oort Cloud does not answer the question of whether or not it originated in the solar system or was captured by chance. It does have a highly elliptical orbit, perhaps suggestive of capture, but then, it's perihelion is so distant that one wouldn't think it likely for the Sun to have captured it. At least I wouldn't, but then, I'm only a layperson. <img src="/images/icons/wink.gif" /> <div class="Discussion_UserSignature"> <p> </p><p><font color="#666699"><em>"People assume that time is a strict progression of cause to effect, but actually from a non-linear, non-subjective viewpoint it's more like a big ball of wibbly wobbly . . . timey wimey . . . stuff."</em>  -- The Tenth Doctor, "Blink"</font></p> </div>