[Sigia-l] The planetary classification conundrum... mental modelsoutside of the Web

[Eric Reiss]

If Charon and Pluto orbit around the same gravitational center, then
it would seem that they are both either planets (if they're orbiting
a star) or a moon (orbiting a planet).

However, the rather loose definition of a pluton actually seems to
apply to both moons and planets since the key differentiator seems to
be the type and distance-from-center of the orbit. Why couldn't one
argue that Earth was also a pluton? Not enough distance from the
gravitational source=

Is a faceted classification scheme needed...?

Cheers,
Eric
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Eric Reiss
Managing Director
FatDUX Aps
Copenhagen, Denmark
http://www.fatdux.com
office: (+45) 39 29 67 77
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