(181902) 1999 RD215
| Discovery[1][2] | |
|---|---|
| Discovered by | C. Trujillo J. X. Luu D. C. Jewitt |
| Discovery site | Mauna Kea Obs. |
| Discovery date | 6 September 1999 |
| Designations | |
| (181902) 1999 RD215 | |
| 1999 RD215 | |
| TNO[1] · SDO[3][4] · distant[2] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 3[1] · 1[2] | |
| Observation arc | 8.03 yr (2,933 days) |
| Aphelion | 204.40 AU |
| Perihelion | 37.541 AU |
| 120.97 AU | |
| Eccentricity | 0.6897 |
| 1330.58 yr (485,993 d) | |
| 7.8003° | |
| 0° 0m 2.52s / day | |
| Inclination | 25.990° |
| 210.32° | |
| 137.86° | |
| Physical characteristics | |
| 147 km[4] 148 km[5] | |
| 0.08 (estimate)[5] 0.09 (estimate)[4] | |
| 7.4[1] · 7.6[5] | |
(181902) 1999 RD215 is a trans-Neptunian object of the scattered disc, approximately 148 kilometers in diameter. It was discovered on 6 September 1999, by American astronomers Chad Trujillo, Jane Luu, and David Jewitt at the Mauna Kea Observatories, Hawaii.[2][3]
Orbit and classification
[edit]1999 RD215 orbits from the center of the Kuiper belt to well beyond into the scattered disc. It orbits the Sun at a distance of 37.5–204.4 AU once every 1330 years and 7 months (485,993 days; semi-major axis of 121 AU). Its orbit has an eccentricity of 0.69 and an inclination of 26° with respect to the ecliptic.[1] The body's observation arc begins with its official discovery observation.[2]
Diameter and albedo
[edit]According to the Johnston's Archive and Michael Brown, 1999 RD215 measures 147 and 148 kilometers in diameter, and its surface has an estimated albedo of 0.09 and 0.08, respectively.[4][5]
See also
[edit]References
[edit]- ^ a b c d e f "JPL Small-Body Database Browser: 181902 (1999 RD215)" (2007-09-17 last obs.). Jet Propulsion Laboratory. Retrieved 16 January 2018.
- ^ a b c d e "181902 (1999 RD215)". Minor Planet Center. Retrieved 16 January 2018.
- ^ a b "List Of Centaurs and Scattered-Disk Objects". Minor Planet Center. Retrieved 16 January 2018.
- ^ a b c d Johnston, Wm. Robert (15 October 2017). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 16 January 2018.
- ^ a b c d Michael E. Brown. "How many dwarf planets are there in the outer solar system?". California Institute of Technology. Retrieved 16 January 2018.
External links
[edit]- Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
- Discovery Circumstances: Numbered Minor Planets (180001)-(185000) – Minor Planet Center
- (181902) 1999 RD215 at AstDyS-2, Asteroids—Dynamic Site
- (181902) 1999 RD215 at the JPL Small-Body Database
