(131697) 2001 XH255

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(131697) 2001 XH255
Discovery[1]
Discovered byKleyna, J., Sheppard, S. S., Jewitt, D. C.
Discovery date11 December 2001
Designations
MPC designation(131697) 2001 XH255
TNO
4:5 resonance[2][3]
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 3
Observation arc4110 days (11.25 yr)
Aphelion37.907 AU (5.6708 Tm) (Q)
Perihelion32.339 AU (4.8378 Tm) (q)
35.123 AU (5.2543 Tm) (a)
Eccentricity0.079253 (e)
208.16 yr (76030.5 d)
318.51° (M)
0° 0m 17.046s / day (n)
Inclination2.8512° (i)
323.17° (Ω)
217.87° (ω)
Earth MOID31.3433 AU (4.68889 Tm)
Jupiter MOID26.8986 AU (4.02397 Tm)
Physical characteristics
Dimensions100 km (assumed)[4]
0.09 (assumed)
23.6[5]
8.2[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 2041.[1]

Assuming a generic TNO albedo of 0.09, it is about 100 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 21 times over 5 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)" (last observation: 2006-01-29). Retrieved 7 April 2016.
  2. ^ a b c Marc W. Buie. "Orbit Fit and Astrometric record for 131697" (2006-01-29 using 19 observations). 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]