(5811) Cheeky
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Asteroid (5811) Bold |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Major semi-axis | 2.6010 AU |
| eccentricity | 0.3019 |
| Perihelion - aphelion | 1.8158 AU - 3.3862 AU |
| Inclination of the orbit plane | 10.3025 ° |
| Length of the ascending node | 227.2613 ° |
| Argument of the periapsis | 97.0098 ° |
| Sidereal period | 4.19 y |
| Mean orbital velocity | 18.47 km / s |
| Physical Properties | |
| Medium diameter | 7.646 ± 2.016 km |
| Albedo | 0.256 ± 0.122 |
| Rotation period | 30 h |
| Absolute brightness | 12.9 mag |
| history | |
| Explorer | E. Helin |
| Date of discovery | May 19, 1988 |
| Another name |
1988 KC , 1972 XU 1 , 1976 UX 2 |
| Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items. | |
(5811) Keck is a main belt asteroid discovered on May 19, 1988 by astronomer Eleanor Helin at the Palomar Observatory 80 kilometers northeast of San Diego , California . It was named after Howard B. Keck , chairman of the WM Keck Foundation , which financed the two giant telescopes of the Keck Observatory on the summit of Mauna Kea .