2015 RY245
| Discovery[1][2] | |
|---|---|
| Discovered by | OSSOS |
| Discovery site | Mauna Kea Obs. |
| Discovery date | 9 September 2015 |
| Designations | |
| 2015 RY245 | |
| o5s13[3] | |
| TNO[1] · SDO[4] | |
| 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[4] |
| 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.[5] Such objects can not reach such orbits without some perturbing object, which lead to the speculation of planet nine.
References
[edit]- ^ a b c d "JPL Small-Body Database Browser: (2015 RY245)" (2017-01-02 last obs.). Jet Propulsion Laboratory. Retrieved 2 August 2017.
- ^ a b "2015 RY245". Minor Planet Center. Retrieved 2 August 2017.
- ^ Shankman, Cory; et al. (2017). "OSSOS. VI. Striking Biases in the Detection of Large Semimajor Axis Trans-Neptunian Objects". The Astronomical Journal. 154 (2): 50. arXiv:1706.05348. Bibcode:2017AJ....154...50S. doi:10.3847/1538-3881/aa7aed. hdl:10150/625487. S2CID 3535702.
- ^ a b "List of Known Trans-Neptunian Objects". Johnston's Archive. 22 July 2017. Retrieved 2 August 2017.
- ^ minorplanetcenter.net: q>30, a>200
External links
[edit]- OSSOS survey by the Canada–France–Hawaii Telescope
- OSSOS VI. Striking Biases in the detection of large semimajor axis Trans-Neptunian Objects 16 Jun 2017
- 2015 RY245 at the Minor Planet Center
- 2015 RY245 at the JPL Small-Body Database
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