(131697) 2001 XH255

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(131697) 2001 XH255
Discovery[1]
Discovered by Kleyna, J., Sheppard, S. S., Jewitt, D. C.
Discovery date 2001-12-11
Designations
MPC designation (131697) 2001 XH255
Minor planet category TNO
4:5 resonance[2][3]
Orbital characteristics[1]
Epoch November 30, 2008
Aphelion 37.363 AU (Q)
Perihelion 32.256 AU (q)
34.810 AU (a)
Eccentricity 0.07335
205.39 yr
301.70° (M)
Inclination 2.8632 °
323.08°
222.19°
Physical characteristics
Dimensions 92 km (assumed)[4]
Albedo 0.09 (assumed)
23.8[5]
8.8[1]

(131697) 2001 XH255, provisionally known as 2001 XH255, is a trans-Neptunian object (TNO) that has a 4:5 resonance with Neptune.[2]

It will come to perihelion in 2042.[1]

Assuming a generic TNO albedo of 0.09, it is about 92 km in diameter.[4]

Resonance[edit]

According to the Deep Ecliptic Survey and Minor Planet Center, (131697) 2001 XH255 has a 4:5 resonance with Neptune.[2][3] 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.[1]

The Neptune 4:5 resonance keeps it more than 7 AU from Neptune over a 14000-year period.[6]

It has been observed 19 times over 4 oppositions and has an orbit quality code of 3.[1]

The libration of 2001 XH255. Jupiter in red, Saturn in yellow, and Uranus in blue. Neptune is the white dot at 5 o'clock.

References[edit]

  1. ^ a b c d e f "JPL Small-Body Database Browser: 131697 (2001 XH255)". 2006-01-29 last obs. Retrieved 2009-02-01. 
  2. ^ a b c Marc W. Buie (2006-01-29 using 19 observations). "Orbit Fit and Astrometric record for 131697". SwRI (Space Science Department). Retrieved 2009-02-01. 
  3. ^ a b "MPEC 2009-A63 :Distant Minor Planets (2009 JAN. 29.0 TT)". Minor Planet Center. 2009-01-13. Retrieved 2009-02-01. 
  4. ^ a b Wm. Robert Johnston (22 August 2008). "List of Known Trans-Neptunian Objects". Johnston's Archive. Archived from the original on 13 February 2009. Retrieved 2009-02-01. 
  5. ^ "AstDys (131697) 2001XH255 Ephemerides". Department of Mathematics, University of Pisa, Italy. Archived from the original on 2009-04-18. Retrieved 2009-03-16. 
  6. ^ "MPEC 2006-H30 : 2001 XT254, 2001 XH255". Minor Planet Center. 2006-04-22. Retrieved 2009-02-01. 

External links[edit]