2015 RY245

2015 RY245
Discovery [1][2]
Discovered by OSSOS
Discovery site Mauna Kea Obs.
Discovery date 9 September 2015
Designations
MPC designation 2015 RY245
o5s13
TNO [1] · SDO [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 5
Observation arc 1.47 yr (538 days)
Aphelion 411.25 AU
Perihelion 31.276 AU
221.26 AU
Eccentricity 0.8586
3291.32 yr (1,202,155 days)
1.6973°
0° 0m 1.08s / day
Inclination 6.0347°
341.55°
354.30°
Physical characteristics
Dimensions 78 km[3]
24.6
9.0683[1]

    2015 RY245, also known as o5s13, is a trans-Neptunian object from the scattered disc of the outermost reaches of the Solar System, approximately 78 kilometers in diameter. It was discovered on 9 September 2015, by the Outer Solar System Origins Survey using the Canada–France–Hawaii Telescope at Mauna Kea Observatories, Hawaii, United States.[2]

    It is one a small number of detached objects with perihelion distances of 30 AUs or more, and semi-major axes of 200 AU or more.[4] Such objects can not reach such orbits without some perturbing object, which lead to the speculation of planet nine.

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: (2015 RY245)" (2017-01-02 last obs.). Jet Propulsion Laboratory. Retrieved 2 August 2017.
    2. 1 2 "2015 RY245". Minor Planet Center. Retrieved 2 August 2017.
    3. 1 2 "List of Known Trans-Neptunian Objects". Johnston's Archive. 22 July 2017. Retrieved 2 August 2017.
    4. ↑ minorplanetcenter.net: q>30, a>200


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