(131697) 2001 XH255

(131697) 2001 XH255
Discovery[1]
Discovered by Kleyna, J., Sheppard, S. S., Jewitt, D. C.
Discovery date 11 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 arc 4110 days (11.25 yr)
Aphelion 37.907 AU (5.6708 Tm) (Q)
Perihelion 32.339 AU (4.8378 Tm) (q)
35.123 AU (5.2543 Tm) (a)
Eccentricity 0.079253 (e)
208.16 yr (76030.5 d)
318.51° (M)
0° 0m 17.046s / day (n)
Inclination 2.8512° (i)
323.17° (Ω)
217.87° (ω)
Earth MOID 31.3433 AU (4.68889 Tm)
Jupiter MOID 26.8986 AU (4.02397 Tm)
Physical characteristics
Dimensions 100 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

    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

    1. 1 2 3 4 5 6 "JPL Small-Body Database Browser: 131697 (2001 XH255)" (last observation: 2006-01-29). Retrieved 7 April 2016.
    2. 1 2 3 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. 1 2 "MPEC 2009-A63 :Distant Minor Planets (2009 JAN. 29.0 TT)". Minor Planet Center. 2009-01-13. Retrieved 2009-02-01.
    4. 1 2 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

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