(469306) 1999 CD158
(469306) 1999 CD158 (provisional designation 1999 CD158) is a trans-Neptunian object from the circumstellar disc of the Kuiper belt, located in the outermost region of the Solar System. The relatively bright hot classical Kuiper belt object measures approximately 310 kilometers (190 miles) in diameter. It was discovered on 10 February 1999, by American astronomers Jane Luu, David Jewitt, and Chad Trujillo at Mauna Kea Observatories on the Big Island of Hawaii, United States.
| Discovery | |
|---|---|
| Discovered by | J. X. Luu D. C. Jewitt C. Trujillo |
| Discovery site | Mauna Kea Obs. |
| Discovery date | 10 February 1999 |
| Designations | |
MPC designation | (469306) 1999 CD158 |
Alternative designations | 1999 CD158 |
Minor planet category | TNO · cubewano (hot) distant · detached |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 3 | |
| Observation arc | 16.18 yr (5,908 days) |
| Aphelion | 50.139 AU |
| Perihelion | 37.410 AU |
Semi-major axis | 43.775 AU |
| Eccentricity | 0.1454 |
Orbital period (sidereal) | 289.63 yr (105,787 days) |
Mean anomaly | 250.48° |
Mean motion | 0° 0m 12.24s / day |
| Inclination | 25.486° |
Longitude of ascending node | 119.03° |
| ≈ 17 February 2107 ±3 days | |
| 143.51° | |
| Physical characteristics | |
Mean diameter | 310 km |
Synodic rotation period | 6.88±0.02 h |
| 0.13 | |
| IR · C B–V = 0.770 · 0.830 · 0.864 · 0.860 V–R = 0.630 · 0.510 · 0.520 · 0.520 V–I = 1.110 · 1.092 · 1.100 | |
| 21.8 | |
| 4.837±0.111 (R) · 5.28 | |
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