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No. Sedna is currently classified as a planetoid.
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Is planet sedna the closest to the asteroid belt?
no
What is the difference between an asteroid and sedna?
Minor Planet number 90377 Sedna has never been moved from the asteroid classification. The IAU hasn't received enough data to say it is a dwarf planet because observations to check for things like hydrostatic equilibrium is so difficult for an object in the far out scattered disc section it resides in. Asteroids do not have hydrostatic equilibrium whereas Dwarf Planets do. Sedna may very well qualify as a Dwarf Planet; we just don't know yet.
What orbits stars?
Mainly planets, which may have moons, but stars are also orbited by dwarf planets (like Pluto and Sedna), and space debris (like our asteroid belt).
Which is further sedna or Eris?
Sedna
What is the difference between Pluto and sedna?
sedna is red and Pluto is thought to be grey. Sedna is smaller then Pluto.
Is planet sedna the closest to the asteroid belt?
no
What is the difference between an asteroid and sedna?
Minor Planet number 90377 Sedna has never been moved from the asteroid classification. The IAU hasn't received enough data to say it is a dwarf planet because observations to check for things like hydrostatic equilibrium is so difficult for an object in the far out scattered disc section it resides in. Asteroids do not have hydrostatic equilibrium whereas Dwarf Planets do. Sedna may very well qualify as a Dwarf Planet; we just don't know yet.
What is a sedna?
Not "a" Sedna; just "Sedna". Sedna is the Inuit goddess of the sea. Also, a dwarf planet named after this goddess.
What orbits stars?
Mainly planets, which may have moons, but stars are also orbited by dwarf planets (like Pluto and Sedna), and space debris (like our asteroid belt).
Which is further sedna or Eris?
Sedna
How many moons does sedna have?
Sedna has no moons.
Is Pluto the only dwarf planet you know of?
There are several other dwarf planets in addition to Pluto. These include Eris, Sedna, Quaoar, Orcus, Makemake, Haumea, and the large asteroid Ceres.
What is the difference between Pluto and sedna?
sedna is red and Pluto is thought to be grey. Sedna is smaller then Pluto.
When was Sedna discovered?
Sedna was discovered on November 14, 2003.
What are the interior layers of Sedna?
sedna is hot, crusty, and shallow
How many km is sedna from sun?
There is not a way to tell how many km are from the sun to Sedna. It is a long distence from the sun to Sedna.
What gases make up Sedna's atmosphere?
It appears that there is no atmosphere on Sedna.
