What is the most distant Asteroid,comet or planetlike object known (out)side our solarsystem? I think that is not the tenth planet. Who can tell me this,and who can explain that? Thanks. Denis.
Established Member
What is the most distant Asteroid,comet or planetlike object known (out)side our solarsystem? I think that is not the tenth planet. Who can tell me this,and who can explain that? Thanks. Denis.
Established Member
It's probably a hyperbolic comet observed centuries ago. But we can only guess at its position now as it would be too far to observe.
If you mean something we can point a telescope at and see, then it would be the "10th planet".
Bad Post-Doc
Well, there have been planets discovered around other stars. Is that what you mean?
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Where can i get information about that hyperbolic comet? and how far is it from the sun,from us,and from the orbit of pluto? And what is the object named Sedna? Can somebody tell and explain me? Thanks. Denis.
Vulcan Administrator
The most distant planet found so far is 17,000 light years away.
The best writeup on Sedna is probably here, courtesy of the discoverer.
Everything I need to know I learned through Googling.
Order of Kilopi
If Denis12 means "currently the most distant object visible through a telescope," then the answer is 2003 UB313, or "tenth planet". At the moment it is 97 AU from the Sun, while Sedna is "only" 90 AU. If he means "the visible object which gets farthest from the Sun," then the answer is Sedna -- at aphelion it is about 950 AU from the Sun, but won't get there for more than 5,000 years.Originally Posted by ToSeek
If Denis12 does not care about the object being actually visible through any telescope, then it is the exoplanet 17,000 light-years away.
Established Member
What is sedna for kind of object,and why is its orbit around the sun so extreme from 90 AU to an amazing 940 AU? Where can i find a chart of its orbit around the sun? How is it discovered,but it is to faint to see it through telescopes. And how much AU is pluto from the sun in its closest to the sun,at this moment ,and at its greatest distance from the sun? Denis.
Established Member
No reaction? but i am patient. Thanks. Denis.
Established Member
Sedna's Wikipedia entry
Pluto's Wikipedia entry
That should get you much of the information you're looking for.
Vulcan Administrator
If you had gone to the link I provided, you'd find most of the information you requested there, particularly several diagrams of Sedna's orbit.
Everything I need to know I learned through Googling.
Order of Kilopi
Just over two hours, on 28 December? I expect that quite a few of the BAUT members are checking out the Q&A section of BAUT a little less frequently than they might otherwise (not to mention that this time period is one in which some of our members are usually asleep - lazy things).
Established Member
It is truly a bizarre orbit that Sedna has (at least in terms of our current knowledge & observations). I'm willing to posit that it'll be a fair amount of time before we actually send a probe to visit this place. If ever.
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