Yes about Pluto, Charon, and the other dwarf planet (tentatively named Xena) being Kuiper Belt Objects.
Yes about Pluto and Charon being a binary system.
As for Pluto not being a planet, check any of the 9,000 threads with this question since Pluto was reclassified.
2006-10-27 07:37:59
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answer #1
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answered by Anonymous
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Xena is a dwarf.
Please read below:
Our solar system is thus considered to have eight planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Under a separate resolution, it is also considered to have three dwarf planets: Ceres, Pluto, and Eris.
(The International Astronomical Union (IAU), the official scientific body for astronomical nomenclature, currently defines "planet" as a celestial body that, within the Solar System,[1]
(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;
or within another system,[2]
(i) is in orbit around a star or stellar remnants;
(ii) has a mass below the limiting mass for thermonuclear fusion of deuterium; and
(iii) is above the minimum mass/size requirement for planetary status in the Solar System. )
(Before the name Eris was granted, two nicknames were used for the planet by the popular media.
"Xena" was an informal name used by the discovery team. It was inspired by eponymous heroine of the television series Xena: Warrior Princess. The discovery team had reportedly saved the nickname 'Xena' for the first body they discovered that was larger than Pluto. Their only stated reason was that "We have always wanted to name something Xena"[6] (apparently implying that the name was chosen without any reference to Planet X).
The nickname "Lila" has also been used, but this is a misunderstanding of planetlila, part of the URL of the discovery web page; the web page's name is derived from Mike Brown's daughter Lilah.)
2006-10-27 07:38:37
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answer #2
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answered by Anonymous
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Xena was never the official name of "2003 UB313", it was only unofficially called that for a while. It is now officially named Eris.
As of today, the IAU says Eris, Pluto and Ceres (the largest asteroid) are the only 3 dwarf planets. Pluto's moon Charon is just a Moon again.
2006-10-27 07:35:42
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answer #3
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answered by campbelp2002 7
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Xena is a dwarf planet. It is too small and does not meet the criteria to be called a planet. Pluto is not and never was a planet. It is way too small. Pluto has three moons, not just one. It is not a binary planet system.
2006-10-27 07:44:21
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answer #4
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answered by bldudas 4
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Xena is a warrior princess............
2006-10-27 09:47:18
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answer #5
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answered by Anonymous
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i think they are dwarfs
2006-10-27 09:16:48
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answer #6
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answered by garrbear99 1
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