This hypothetical Neptune-sized planet orbits our Sun in a highly elongated orbit far beyond Pluto. The object, which the researchers have nicknamed "Planet Nine," could have a mass about 10 times that of Earth and orbit about 20 times farther from the Sun on average than Neptune.

What is the 9th planet name?

Pluto will always be the ninth planet to us! Smaller than Earth's moon, Pluto was a planet up until 2006 and has five of its own moons!

Is Pluto our 9th planet?

After Pluto was discovered in 1930, it was declared to be the ninth planet from the Sun. ... Pluto is the ninth-largest and tenth-most-massive known object directly orbiting the Sun. It is the largest known trans-Neptunian object by volume but is less massive than Eris.