why did Pluto now consider as an Asteroid?

Answer 1

the international astronomical union defined three terms "planet", "dwarf planet", and "small solar system body". this does not change anything about the solar system or pluto. this doesn't change pluto's name. it just corrects the mistake of classifying pluto as a planet initially.

i have known since i was about twelve that pluto does not have the physical and orbital characteristics that fit the pattern set by the major bodies in the solar system, and later, after the discovery of hundreds of other similar bodies with similar orbits, i knew this was inevitable. this was the right thing to do, believe me.

pluto is not an asteroid. because pluto orbits the sun, is round, orbits the sun with a bunch of other similar bodies with similar orbits, and is not a satellite it is a dwarf planet.

(1) A "planet" is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighborhood around its orbit.

(2) A "dwarf planet" is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, (c) has not cleared the neighborhood around its orbit, and (d) is not a satellite.

(3) All other objects orbiting the Sun shall be referred to collectively as "small solar system bodies".


look here:
http://www.iau2006.org/mirror/www.iau.org/iau0603/index.html

Answer 2

Its not considered a asteroid, Its now considered as a dwarf planet, The reason for this is that its planetary trajectory coincides with that of neptune.And this is only in the case of pluto.

Answer 3

It is now considered as a dwarf planet because it fails to meet the IAU's new definition for a fully-fledged planet. There are three criteria. It passes muster on the first two, but fails on the third. We therefore now have 8 planets not 9.

The IAU defines a Planet in our Solar System as a celestial body that:

(a) is in orbit around the Sun;
(b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape;
(c) has cleared the neighbourhood around its orbit.

Three bodies which fulfill the first two conditions but not the third are now classified as dwarf planets: Ceres, Pluto and 2003 UB313 ("Xena")

Everything else is now classified as a small Solar System body,

Answer 4

it is not an asteroid. it is a dwarf planet according to the new definition introduced by IAU. a dwarf planet is:
The resolution describes a dwarf planet as an object that:

Is in orbit around the Sun
Has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape
Has not "cleared the neighbourhood" around its orbit
Is not a satellite of a planet, or other nonstellar body

Answer 5

the main reason is that pluto travels in the orbit of uranus for about 12 years in its revolution period. how can a body which does not have an orbit of its own be considered as an planet. the other reasons are a) its smaller size b)weak gravitation and other things.

Answer 6

It is quite smaller than all other planets in our solar system.It is not a terrestrial nor a gaseous planet.It is made up of ice and dust.It's orbit is also far away from sun's gravitation.

Answer 7

It is a Dwarf Planet.

Answer 8

its a dwarf planet bimbo