2015 KQ174
| Discovery Perihelion | 49.311 AU | |
|---|---|---|
| 55.397 AU | ||
| Eccentricity | 0.1099 | |
| 412.32 yr (150,600 d) | ||
| 76.743° | ||
| 0° 0m 8.64s / day | ||
| Inclination | 24.344° | |
| 213.92° | ||
| 294.05° | ||
| Physical characteristics | ||
Mean diameter | 154 km[5] | |
| 0.09 (assumed)[5] | ||
| 25.01[6] | ||
| 7.3[1][2] | ||
2015 KQ174 is a
scattered and detached object, located in the outermost region of the Solar System. The object with a moderately inclined and eccentric orbit measures approximately 154 kilometers (96 miles) in diameter. It was first observed on 24 May 2015, by astronomers at the Mauna Kea Observatories
in Hawaii, United States.
Orbit and classification
2015 KQ174 orbits the Sun at a distance of 49.3–61.5
semi-major axis of 55.4 AU). Its orbit has an eccentricity of 0.11 and an inclination of 24° with respect to the ecliptic.[2]
The object belongs to the same group as perihelia (at 49.3 AU rather than 31–41 AU).
Considered both a
2004 XR190
, nicknamed "Buffy".
Physical characteristics
Johnston's archive estimates a diameter of 154 kilometers based on an assumed
albedo of 0.09.[5] This is approximately a quarter the size of "Buffy" which is estimated at around 500 kilometres (310 mi), roughly a quarter the size of Pluto
.
References
- ^ a b c "2015 KQ174". Minor Planet Center. Retrieved 13 December 2018.
- ^ a b c d "JPL Small-Body Database Browser: (2015 KQ174)" (2017-08-24 last obs.). Jet Propulsion Laboratory. Retrieved 13 December 2018.
- ^ ISBN 3-540-71957-1.
- ^ . Retrieved 12 December 2018.
- ^ a b c d e f Johnston, Wm. Robert (7 October 2018). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 12 December 2018.
- ^ "2015 KQ174 – Ephemerides". AstDyS-2, Asteroids – Dynamic Site, Department of Mathematics, University of Pisa, Italy. Retrieved 12 December 2018.
- ^ S2CID 118630570.
- S2CID 15588453. (Discovery paper)
External links
- List Of Centaurs and Scattered-Disk Objects, Minor Planet Center
- List of Known Trans-Neptunian Objects, Johnston's Archive
- 2015 KQ174 at AstDyS-2, Asteroids—Dynamic Site
- 2015 KQ174 at the JPL Small-Body Database