It is impossible to map out the space coordinet of any planet, including
Earth, for the simple reason that they revolve around Sol, in an
elipsically-shaped orbit. Their coordinets are always changing. Their
distance from Sol is also frequently changing. It would not even work to say
that Mars has a "planet index" of Sol4, and Earth a planet index of Sol3,
because Pluto and Neptune do alternate their positions in distance from Sol.
It's fun to think about such things, but another loophole would be
non-geographical content. Poetry, for example. If someone just wanted to
publish a collection of poetry, that really has no geographic location. No
system's perfect. :)
Daniel [inanis (edf)]
ps thanks for the fun opportunity to play out the role of "sci-fi geek" for
a few minutes... been fun! :)