How long is a year on Sedna?

Answer 1

Sedna is not a planet, according to the International Astronomical Union (IAU). Because Sedna is so distant and so small, it has not yet been classified, but is probably a Trans-Neptunian Object. It may or may not turn out to meet the standards of a "dwarf planet", depending on whether its mass is high enough to force it into a roughly spherical shape.

Sedna's orbit is highly elliptical and has not been completely analyzed, but its perihelion appears to be 76 AU with an aphelion of 975 AU. This would give it an orbital period of perhaps 12 thousand years.

Answer 2

Sedna's orbit isn't known exactly yet, but it is estimated to take between 10,000 and 12,000 years to make one trip around the sun.

Answer 3

Sedna is thought to take around 11,400 years to complete one orbit of our sun.

Answer 4

It ia ten earth hours.