Is there a black dwarf in our solar system?

I think some of the planets and moons here COULD be black dwarves, 'cause
they must go somewhere, nobody needs useless dark solar systems...

Ted Ratmark wrote:
I think some of the planets and moons here COULD be black dwarves, 'cause
they must go somewhere, nobody needs useless dark solar systems...

Have you looked among the pygmy populations of Africa?

On Fri, 16 Sep 2005 06:59:38 +0200, "Ted Ratmark"
wrote:

I think some of the planets and moons here COULD be black dwarves, 'cause
they must go somewhere, nobody needs useless dark solar systems...

Well, if you believe that there are black dwarfs around here, then you
would have to explain how this is possible. After all theory on this
matter clearly points out that it would require more time than has
passed in this Universe for a white dwarf to cool into a black dwarf.

And had there been such a dense object within the known solar system,
then it would have soon been discovered due to it's gravitational
effects.

Since I guess that the stars in our local region have now been mapped
out well enough to highlight that we are not a binary star solar
system, then I expect that the largest undiscovered object that could
be found would be a brown dwarf out in our Oort Cloud. Although since
smaller objects are always more common, then it is hard to say where
on this upwards scale you would encounter a total of 1. Most
astronomers seem to think that Earth-sized is the most likely maximum
sized object yet to be discovered.

No black dwarf stars in this Universe anyway.

Cardman.

I'd say a small brown dwarf is still fairly likely. With an elliptical
orbit with min distance of .5 LY and max of 2.5 LY and a max mass of
about 50X Jup., it'd be hard to see, especially if itr was waaaay out
of the ecliptic plane. (parameters from a paper I saw written last
year, sorry, no link)
Considering that brown dwarfs have just recently been seen at all, and
that the population of stellar and substellar objects seems to in
inverse proportion to mass, I'd almost be surprised if there werent
some fairly close. Even the reasonably close K type star Epsilon Indi
has been shown to have a PAIR of brown dwarfs at extreme distance from
the primary.