what`s the 10th planet name?can anyone here tell me?

Question

thanks for your attention.

Answer 1

planet x

Answer 2

Tougher question than it sounds. First of all, there was a lot of dithering about the name. The discoverers originally called it Quaoar (kwa-whar) after a Native American deity, but ended up formally proposing Sedna, an Inuit deity. But they didn't publicize their suggestion, so a lot of people called it Xena, for lack of an official name. Eventually it was named Eris, after the Greek goddess of war and strife.

Just as well, because it was immediately followed by strife in the astronomical community as they argued about what is and is not a planet. Eventually they adopted the definition that a planet:

(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 neighbourhood around its orbit;

By this definition neither Eris nor Pluto is a planet; they're both too small. To describe those objects, they came up with a new class called "dwarf planets".

But wait! If you say Eris is the tenth planet if you include dwarf planets, you'd still be wrong. The problem is that there is a third dwarf planet, called Ceres, located in the asteroid belt which is between Mars and Jupiter. So, our final role call -- including dwarfs -- is Mercury, Venus, Earth, Mars, Ceres, Jupiter, Saturn, Uranus, Neptune, Pluto and (in eleventh place) Eris.

Ain't nothin' ever easy.

Answer 3

According to the new definition, there is no 10th planet, there is not even a 9th planet.

If Pluto had been kept as a planet, then Eris, being slightly larger, could have been called the 10th planet; but then, in the world of minor planets, since Ceres is closer to the Sun than Pluto is, the basis for deciding which would be 9th or 10th gets very quickly confusing.

So take your pick, but do not lose sleep over it; it is not worth it.

Answer 4

http://en.wikipedia.org/wiki/Eris_%28dwarf_planet%29
http://en.wikipedia.org/wiki/Pluto

this seems to be a question about "136199 eris". "136199 eris" is about five percent bigger than "134340 pluto", but neither one is a planet.

they do orbit the sun, are ball-shaped, are not satellites, but they do not have isolated orbits (a bunch of other similar bodies have similar orbits.) so they are not planets.

this does not change anything about the solar system or pluto. it just corrects the mistake of classifying pluto as a planet initially. i don't know how long this will drag on tho. many planetary astronomers are not satisfied that the definition is rigorous enuf. i can accept that the definition is flawed, but i can not accept that pluto is a planet.

many astronomers consider pluto and charon to be a binary system, but two small bodies orbit that system. they are called nix and hydra.

i have been waiting for this since i was about ten. i feel somewhat satisfied. i knew that pluto didn't fit the pattern set by the major bodies in the solar system so it was an anomaly. it just felt "out of place". now that astronomers have found hundreds of other bodies with similar orbits, classifying "134340 pluto" as a planet is even more irrational. this was the right thing to do, believe me.

incidentally, "134340 pluto" was never a moon of neptune. neptune did capture triton. this is why triton has a retrograde orbit.

Answer 5

The tenth (or in this case ninth now that Pluto is gone) is only a theory. Astonomers have noticed a poweful gravitational force drawing asteroids and comets away from the Kupiter belt and outside the farthest reaches of a solar system. If there is such planet, it is called Planet X in the mean time while there is no concrete evidence that it exists

Answer 6

10th planet = Eris.

There are only 8 official planets.

Pluto used to be the Ninth planet, but it has since been downgraded to a "dwarf planet".

There are two other dwarf planets. The tenth was discovered in 2003 and is named Eris. You may read an article about it here:

http://en.wikipedia.org/wiki/Eris_%28dwarf_planet%29

and about it's discovery here:

http://science.nasa.gov/headlines/y2005/29jul_planetx.htm



and another article about the tenth planet:

http://en.wikipedia.org/wiki/Tenth_planet

Answer 7

There was a sentence I learned to help memorize the planets.

Mother very effortlessly made me a jelly sandwich under no protest.

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto.

I don't see a 10th, but I probably graduated before some were even formed.

:)

"Peace.

Answer 8

it is not specified but the 10 planet was sedna because it was discovered after pluto

Answer 9

Cant have a tenth without having a ninth....Live long and prosper Pluto !

Answer 10

Believe it or not XENA is the name of the tenth planet.