10199 Chariklo
An artist's rendering of Chariklo with its rings
|
|
| Discovery | |
|---|---|
| Discovered by | James Scotti, Spacewatch |
| Discovery date | 15 February 1997 |
| Designations | |
|
Named after
|
Chariclo |
| 1997 CU26 | |
| Centaur | |
| Orbital characteristics | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 1 | |
| Observation arc | 9684 days (26.51 yr) |
| Aphelion | 18.511 AU (2.7692 Tm) |
| Perihelion | 13.066 AU (1.9546 Tm) |
| 15.789 AU (2.3620 Tm) | |
| Eccentricity | 0.17244 |
| 62.74 yr (22915 d) | |
| 68.918° | |
| 0° 0m 56.556s / day | |
| Inclination | 23.405° |
| 300.39° | |
| 242.20° | |
| Known satellites |
2 rings undiscovered embedded or shepherd moons? |
| Earth MOID | 12.1374 AU (1.81573 Tm) |
| Jupiter MOID | 8.14711 AU (1.218790 Tm) |
| Jupiter Tisserand parameter | 3.479 |
| Physical characteristics | |
| Dimensions | 254 km 248±18 km 302 km |
|
Mean radius
|
151 ± 15 km |
| 7.004 h (0.2918 d) | |
|
Sidereal rotation period
|
7.004 h |
| 0.045 ± 0.010 | |
|
SMASS = D, BR (G-mode) B−V=0.84 V−R=0.50±0.03 B−R=1.34 V−I=1.02±0.02 R−J=0.99 V−J1.49±0.07 J−H=0.49 V−H=1.98±0.08 |
|
| ~18.3 | |
| 7.40±0.25, 6.6 | |
10199 Chariklo (/ˈkærᵻkloʊ/ or /kəˈrɪkloʊ/; Ancient Greek: Χαρικλώ; provisional designation: 1997 CU26) is the largest confirmed centaur (minor planet of the outer Solar System). It orbits the Sun between Saturn and Uranus, grazing the orbit of Uranus. On 26 March 2014, astronomers announced the discovery of two rings (nicknamed Oiapoque and Chuí), around Chariklo by observing a stellar occultation. making it the first known minor planet to have rings.
Chariklo was discovered by James V. Scotti of the Spacewatch program on February 15, 1997. Chariklo is named after the nymph Chariclo (Χαρικλώ), the wife of Chiron and the daughter of Apollo.
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