Why was Pluto removed from the planetary system?

Answer 1

Pluto does not follow the same orbit as all the other planets. That is to say it has a high eccentric orbit that does not follow the ecliptic. The ecliptic is an imaginary line taken from the Sun's equator and extended out across the solar system, like the rings of Saturn.

Pluto is small and probably a captured asteroid or Kuiper belt object(KBO ) and so was voted not to be an original planet formed at the birth of the solar system.

Answer 2

Pluto is not being removed from the solar system,but it seemswhen it was discovered nearly 80 years ago we wrongly called it a planet. We have dicovered more about Pluto since then and it does not behave in any way like the solar systems other planets. Whatever you call it, its staying where it is.
Pluto is still there, of course. But it has been demoted - it is no longer considered a major planet, but a so-called "dwarf planet".
Its considered not a planet but a moon since its so small..

Answer 3

The discovery of other objects with a similar size and distance as Pluto in more recent years has meant that astronomers either had to keep adding planets to the list, or we had to redefine what a planet actually was. In 2006, a new definition for a planet was established. It had to be approximately round, it had to orbit the sun and it had to have cleared its neighbourhood of all other objects - so that at that distance from the sun, there were no other sizable bodies. Pluto is not large enough to have done the latter (i.e. it crosses Neptunes orbit), while all other remaining planets have, so it was downgraded to a dwarf planet. There are now eight planets recognised and five Dwarf planets, of which Pluto is one.

Answer 4

It transformed into Plutron and left orbit, therefore no longer being classed as a planet.

Answer 5

This is because it is too small to be classed as a planet.

Answer 6

Because Pluto is a dwarf planet.