Do you consider pluto as a planet?
150101
The small size and weird, distant orbit makes it feel more or less like a stray double-moon. I'm not sure why it's considered a planet really - maybe it's the smaller body that rotates it, Charon, that makes us class it as a planet, maybe it's because we looked for a reason for the deviations in the planets orbits and prematurely labeled it planet. As for me, I do - mostly because Pluto is always mentioned as a planet.
800316
http://en.wikipedia.org/wiki/Pluto\n\non 24 august 2006, the international astronomical union reclassified pluto.\n\npluto does orbit the sun, is ball-shaped and is not a satellite, but it does not have an isolated orbit (a bunch of other similar bodies have similar orbits.) so it is not a planet.\n\ni have been waiting for this since i was about ten when i learned 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. i feel somewhat satisfied, but i don't know how long this will drag on tho. many planetary astronomers are satisfied that the definition is rigorous enuf. i can accept that the definition is flawed, but i can not accept that "134340 pluto" is a planet.\n\nthis was the right thing to do, believe me. this does not change anything about pluto or the solar system. this just corrects the mistake of classifying pluto as a planet initially.\n\nthis same thing happened has happened before. in 1800, an astronomer found a body orbiting the sun between the orbits of mars and jupiter and thought it was a planet. astronomers finally stopped classifying them as planets after they found several other bodies with similar orbits, and no one thinks ceres, pallas, juno, and vesta are planets today.\n\nmany astronomers consider pluto and charon to be a binary system, but two small bodies orbit that system. they are called nix and hydra.\n\nincidentally, "134340 pluto" was never a moon of neptune. neptune did capture triton. this is why triton has a retrograde orbit
900432
Pluto was discovered by Clyde Tombaugh in 1930 at the Lowell Observatory in Flagstaff, AZ. (Not far from where I live.) It was named after the mythological Roman deity believed to rule the underworld. The 1st 2 letters of its name, "PL", are also the initials of astronomer Percival Lowell.\nFor many years, it was considered the 9th planet in our solar system, but recently lost that status. Personally, I think it's a shame. I'll always think of it as a planet.\nHere's a couple of links you can follow to learn more.
761604
all i can say is that NOTHING HAS CHANGED. pluto is still a PLANET. a full blown, fully acceptable PLANET. it has its own moon (Charon) and therefore its own gravitational pull stong enough to attract and HOLD ON TO an object over half its own size and mass. show me any other "asteroid","stationary comet" or even another "planet" capable of such a feat. however, just because ASTRONOMERS deem pluto lesser than it is, has no effect what so ever on ASTROLOGERS exept to piss us off.
984760
You'd have to contact an observatory to find out where it was in the sky in 11/98 but with an orbital period of 165 years, it hasn't moved far relative to us. Pluto, of course, is no longer considered a planet.
547157
*Pluto: officially the 9th planet in our solar system\n*10th planet: nothing officially has this designation.\n\nIf you are talking about 2003 UB313, then there is a comparison to be made.  They both live in a similar part of the solar system, but it looks like UB313 seems to be a bit redder than Pluto.  Pluto is also known to have a transient atmosphere, not measurements of a potential atmosphere of UB313 have yet been published.
1107840
Because there are still arguments whether Pluto is actually a planet, "Sedna" is larger than Pluto. But I believe the argument stems from sheer distance from the Sun, it is more of a rogue body.
406851
In our Solar System?  Unlikely.  There are a bunch of things orbiting beyond Pluto that are bigger than it that could be considered planets if size were everything... although Pluto is just a large Comet that orbits on the inside of the Oort cloud.  \n\nIf there was anything beyond Neptune of any consequential size, chances are we would have detected it by now.
152687
Pluto is the 9th farthest planet form the sun. Sometimes it becomes the 8th farthest planet. Once in every 248 years for 20 yrs.\n\npluto is considered by some to not be a planet at all.  If u want i will tell u the reasons
104242
Yes! The 10th planet was discovered in 2005, and is temporarily known as 2003 UB313.  However, 2003 UB313 is located in the Kuiper belt, which is made up of numerous objects, and there may be many more that could be counted as planets.  The definition of "planet" is currently a topic of debate, and some argue that neither 2003 UB313 nor Pluto should be considered planets.  I believe that the popular media has sometimes refered to it as "planet x," but this is not its official name.
103893
Pluto is officially a planet. Although if it were discovered today it would almost certainly NOT get planet status.\n\nBecause of all the confusion with the recent spate of Kuiper Belt Objects, the International Astronomical Union (they are in charge of naming stuff) declared Pluto a planet for historical reasons.\n\nOf course, for astronomical research it doesn't matter too much what you call it...
389936
Nope.  That's my professional (astronomer) opinon.  Here is why:\n\nPluto is a member of a large collection of similar sized objects that orbit the sun in the same region as it.  This is the same situation that Ceres, the largest asteroid is in.  Pluto was simply the first of these icy bodies to be found, we have since found almost 1000 other objects that share orbital space with Pluto.  Many of them are almost the same sice as it, and one (2003 UB313) is in fact larger than Pluto.\n\nNo good defination of planet exists that allows for pluto to be a planet without admitting about 10-100 other objects in as planets as well, unless you simple state that Pluto is a planet in an ad hoc manner.\n\nThe definition that I generally use in my work is that a planet is an object that has cleared it's orbital space of all other small bodies.  All of the main 8 planets satisfy the criteria.  Pluto, 2003 UB313, Ceres and other small bodies do not.
1183831
THere is an argument among astromoners as to whether classify the bodies beyond pluto as planets... consider that in the asteroid belt there are many objects orbiting the sun... do we call them all planets?\n\nCurrently there are officially only 9 planets:\nMercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto.
757181
The International Astronomical Union decided that Pluto was no longer a planet.  Instead, they decided to classify it as a "dwarf planet" because it has not cleared its orbit of debris.\n\nSee the details below.\n\nRESOLUTION 5A\nThe IAU therefore resolves that "planets" and other bodies in our Solar System, except satellites, be defined into three distinct categories in the following way:\n\n(1) A "planet" [footnote 1] 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 neighbourhood around its orbit.\n\n(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 [footnote 2] , (c) has not cleared the neighbourhood around its orbit, and (d) is not a satellite.\n\n(3) All other objects [footnote 3] except satellites orbiting the Sun shall be referred to collectively as "Small Solar-System Bodies".\n\n\nFootnote 1: The eight "planets" are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.\n\nFootnote 2: An IAU process will be established to assign borderline objects into either dwarf planet and other categories.\n\nFootnote 3: These currently include most of the Solar System asteroids, most Trans-Neptunian Objects (TNOs), comets, and other small bodies.\n\nRESOLUTION 6A\nThe IAU further resolves:\n\nPluto is a "dwarf planet" by the above definition and is recognized as the prototype of a new category of trans-Neptunian objects.
973992
Something less than 400 members of the 10,000 member IAU voted under a veil of assumed authority to downgrade Pluto's status as a planet after they rewrote the rule book. Most of the new criteria they established that must be met in order for an object to be considered a planet is met by Pluto. It orbits a star, it has a moon, and it is generally spherical in shape. The disqualifying new rule was that Pluto has not cleared its orbital path around the sun and there are other objects sharing the same orbit. This would mean that if another object enters or is found to exist in the same orbital path of the Earth, the Earth would not be a planet. The IAU also failed to take into consideration as to whether or not Pluto is in the process of clearing its orbital path and just needs a few billion more years.
823004
Let's try to see this from Pluto's point of view.\n\nPluto received news in 1930 that the folks on Earth had proclaimed him as a Planet, putting him in a very exclusive group of Solar System inhabitants.\n\nPluto was very flattered indeed.\n\nPrior to this, he had been minding his own business, hurting nobody, as you rightly pointed out.  Well, almost nobody...  There were those pesky little rocks in the neighborhood that he just had to shoo away, like the little toddlers that sometimes walk right up to you in the mall.  But it wasn't very often, and Pluto was generally very well behaved in his 3:2 resonant orbit with the local neighborhood big guy, Neppy-whats-his-face.\n\nBut hey, if the folks on Earth put Pluto with Neppy, more power to you guys!\n\nBut the truth is, Pluto has been around for a long, long time, quietly doing his rounds.\n\nNow, you Earthlings decide to take away - some say "dethrone" - his title as a Planet.  Oh, the audacity!...\n\nBut in reality, the insult is felt by Pluto's friends on Earth (including yours truly).  Pluto heard about the raucous in August, but you know what?\n\nHe's still doing his rounds in the cold, dark outer reaches of our stellar neighborhood quietly and without complaining.  He's been doing it for many millennia now.  Maybe, when the boredom gets to him - or perhaps when a fit of playfulness seizes him - he may send a icy piece of rock heading our way, but I'm sure he'll aim to miss.\n\nPluto is a nice guy.  He never hurt anyone except those pesky toddler rocks.  I'm sad for him, but he knows he has friends down here.  He and his chums in the Kuiper Belt are probably laughing at Earthlings who can't seem to make up our minds.\n\nI heard Xena was about to call a neighborhood party to celebrate her ascension.  She's pissed.  Maybe she's the one who'll hurl that rock at us...
822336
read http://en.wikipedia.org/wiki/Pluto\n\ni don't know what you mean by "special", but pluto does orbit the sun, is ball-shaped, does not have an isolated orbit (a bunch of other similar bodies have similar orbits.), and is not a satellite so it is not a planet.\n\ni have been waiting for this since i was about ten.  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.  i feel somewhat satisfied, but i don't know how long this will drag on tho.  this was the right thing to do, believe me.  this does not change anything about pluto or the solar system.  this just corrects the mistake of classifying pluto as a planet initially.\n\nmany astronomers consider pluto and charon to be a binary system, but two small bodies orbit that system.  they are called nix and hydra.\n\nincidentally, "134340 pluto" was never a moon of neptune.  neptune did capture triton. this is why triton has a retrograde orbit.