i mean is pluto still existing as a planet or eliminated from the planetry body? and is sedna a new discovered planet or just part of the heavenly bodies?and when was sedna discorverd as a planet?
2006-10-23 04:48:09 · 5 answers · asked by honeykingz 1 in Science & Mathematics ➔ Astronomy & Space
http://en.wikipedia.org/wiki/Pluto
http://en.wikipedia.org/wiki/Eris_%28dwarf_planet%29
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. 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 twelve. 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.
sedna was not in consideration for classification as a planet, but "136199 eris" was because it is about five percent bigger than "134340 pluto".
incidental, "134340 pluto" was never a moon of neptune. neptune did capture triton. this is why triton has a retrograde orbit.
2006-10-23 05:24:18 · answer #1 · answered by warm soapy water 5 · 2⤊ 0⤋
nicely, it is being debated right now. there is an merchandise, which some evaluate a planet and a few do no longer, previous Pluto's orbit and that i'm particular many greater of those Kuipier Belt gadgets are going to be stumbled on interior the close to destiny. Unofficially, this is asserted as Xena and that i've got heard different persons call it Sedna or something like that, yet until eventually we get probe obtainable to take a nearer examine out those gadgets, the jury will nevertheless be out so a approaches as i'm worried. For a real long term the two astronomers and mathmaticians have been searching for Planet X, as many have pronounced because it, interior the previous. So until eventually the clinical community can come to a decision the actual definition of a Planet, this is extremely your call.
2016-12-16 12:50:28 · answer #2 · answered by starich 4 · 0⤊ 0⤋
Pluto is a dwarf planet. It does not meet the definition of a planet nor should it have ever been considered a planet. Sedna is a Trans-Neptune Object. It orbits the sun in a 10,500 year elliptical orbit beyond Pluto. Sedna was discovered in 2003 or 2004.
2006-10-23 07:58:50 · answer #3 · answered by bldudas 4 · 0⤊ 0⤋
90377 Sedna is a trans-Neptunian object, discovered by Michael Brown (Caltech), Chad Trujillo (Gemini Observatory) and David Rabinowitz (Yale University) on November 14, 2003. At the time of its discovery it was the most distant observed natural solar system body. Sedna may qualify as a dwarf planet pending the detailed definition of that category by the International Astronomical Union.
pluto now is a dwarf planet
2006-10-23 04:51:07 · answer #4 · answered by Anonymous · 0⤊ 1⤋
No It was finnaly decided this summer that a planet must....
Be large enough so that the gravity pulls it into a roughly spherical shape
and must travel around the sun with all objects in its path cleared away.
(Pluto crosses neptune's orbit so is not considered a planet)
2006-10-23 04:52:08 · answer #5 · answered by Benny B 2 · 0⤊ 1⤋