(131697) 2001 XH255, provisionally known as 2001 XH255, is a trans-Neptunian object (TNO) that has a 4:5 resonance with Neptune.
It will come to perihelion in 2041.
Assuming a generic TNO albedo of 0.09, it is about 100 km in diameter.
According to the Deep Ecliptic Survey and Minor Planet Center, (131697) 2001 XH255 has a 4:5 resonance with Neptune. It comes as close as 32.2 AU from the Sun and has a fairly low orbital eccentricity of 0.07 with an inclination of only 2.86 degrees.
The Neptune 4:5 resonance keeps it more than 7 AU from Neptune over a 14000-year period.
It has been observed 21 times over 5 oppositions and has an orbit quality code of 3.
The libration of 2001 XH255
. Jupiter in red, Saturn in yellow, and Uranus in blue. Neptune is the white dot at 5 o'clock.