286 Iclea
Iclea is a large main belt asteroid with the minor planet designation, 286 Iclea. It was discovered by Austrian astronomer Johann Palisa on 3 August 1889 in Vienna, and named for the heroine of Camille Flammarion's astronomical romance Uranie. This object is orbiting the Sun at a distance of 3.19 AU with a period of 5.711 years and an orbital eccentricity (ovalness) of 0.029. The orbital plane is tilted at an angle of 17.9° to the plane of the ecliptic.
Orbital diagram | |
| Discovery | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | 3 August 1889 |
| Designations | |
MPC designation | (286) Iclea |
| Pronunciation | French: [ikle.a] |
Named after | Icléa |
Alternative designations | A889 PB |
Minor planet category | Main belt |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 117.95 yr (43,083 d) |
| Aphelion | 3.287 AU (491.8 Gm) |
| Perihelion | 3.102 AU (464.1 Gm) |
Semi-major axis | 3.195 AU (477.9 Gm) |
| Eccentricity | 0.028921 |
Orbital period (sidereal) | 5.71 yr (2,085.8 d) |
Mean anomaly | 49.3850° |
Mean motion | 0° 10m 21.335s / day |
| Inclination | 17.9010° |
Longitude of ascending node | 149.115° |
| 213.463° | |
| Physical characteristics | |
| Dimensions | 94.30±2.6 km |
Synodic rotation period | 15.365 h (0.6402 d) |
| 0.0508±0.003 | |
| 9.0 | |
This asteroid has a classification of CX in the Tholen taxonomy, indicating a generally carbonaceous composition. Infrared measurements indicate a cross-sectional diameter of approximately 94.3 km. Photometric observations of this asteroid in 2001 provided a light curve that was used to derive a synodic rotation period of 15.365±0.002 hours with an amplitude of 0.15 magnitude.