Discovery date 11 December 2001 Minor planet category TNO4:5 resonance | MPC designation (131697) 2001 XH255 Observation arc 4110 days (11.25 yr) | |
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Discovered by Kleyna, J., Sheppard, S. S., Jewitt, D. C. Aphelion 37.907 AU (5.6708 Tm) (Q) | ||
(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.
Resonance
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.
References
(131697) 2001 XH255 Wikipedia(Text) CC BY-SA