Asteroids have traditionally been thought of as bodies lying between Mars and Jupiter, so Pluto is not an asteroid. Pluto is a Kuiper Belt Object (KBO). Kuiper is the astronomer who discovered Uranus's 5th largest moon, Miranda, in 1948.
1 asteroid (1 Ceres) and 2 KBOs (Pluto and Xena) are now categorised as Dwarf Planets.
The remaining asteroids and KBOs are now categorised as SSSBs (Small Solar System Bodies).
There are now 8 planets.
2006-09-07 00:51:32
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answer #1
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answered by Anonymous
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Pluto has not changed. We just classify him as a dwarf planet due to its small size. Actually there are a few dwarf planets and one of them is even bigger than pluto.
2006-09-07 10:48:49
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answer #2
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answered by Sporadic 3
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Because it does not meet the classifications for a planet, it is too small there are many more pluto type dwarf planets and asteroids in its neighbourhood.
2006-09-07 07:29:02
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answer #3
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answered by elleyelle2001 1
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I can explain that...
Because Pluto in an asteroid... so that Pluto it is considered no more as a planet.
2006-09-07 07:34:02
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answer #4
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answered by Alvi 2
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Because a bunch of scientist decided it did not fit the requirements to be planet and voted it out of planet status.
2006-09-07 07:25:37
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answer #5
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answered by passionparties_by_suzanne 2
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It didn't play well with the other planets. So went sent it packing. Keep that in mind when you're playing with your friends.
2006-09-07 07:26:28
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answer #6
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answered by Texan 6
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Because it is very close to the same size as its moon. They acutally orbit each other.
2006-09-07 07:25:25
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answer #7
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answered by Anonymous
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dont know
2006-09-07 07:25:23
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answer #8
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answered by emmi zairish 3
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