Anything spooky according to this? Can this be Planet X?
It's a large planet in a highly eccentric orbit that is very peculiarly aligned, so it does sound spoopily like some of the claims about Nibiru and its ilk.
However, I wouldn't worry about it coming near us. The parameters they estimate for the orbit are in the general range of semi-major axis a ~ 700 AU, eccentricity e ~ 0.6, and mass m ~ 10 Earths. Perihelion of an orbit (its closest approach to the Sun) is a * (1 - e), so such an object would never come closer than about 280 astronomical units. For reference, Earth orbits at a distance of 1 astronomical unit, and Pluto orbits at 40 AU.
Yes, the old myths tell us that Nibiru, or the planet what ever you wanna call it came in and upset the orbits of the outer planets.
This is why they are tilted or why Pluto is way out of orbit.
Pluto used to be a moon of Saturn named Gaga by the Sumerians.
But Nibiru changed its orbit.
Nibiru also smashed into Tiamat and destroyed it. This is what the old myths say. Some people think it was only a moon of Nibiru that hit Tiamat.
But Tiamat was between Mars and Jupiter where the asteroid belt is now.
Some of Tiamat became Earth.
The moon used to orbit Tiamat also.
And Ceres used to be a moon of Tiamat but its still in the asteroid belt. Its called the Hammered Bracelet.