 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° 10 21.335 / day |
| Inclination | 17.9010° |
| Longitude of ascending node | 149.115° |
| Argument of perihelion | 213.463° |
| Physical characteristics | |
| Dimensions | 94.30±2.6 km |
| Synodic rotation period | 15.365 h (0.6402 d) |
| Geometric albedo | 0.0508±0.003 |
| Absolute magnitude (H) | 9.0 |
286 Iclea is a large main-belt asteroid. 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.
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.
References
- ^ "286 Iclea". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 11 May 2016.
- ^ Tedesco, Edward F.; Noah, Paul V.; Noah, Meg; Price, Stephan D. (February 2002). "The Supplemental IRAS Minor Planet Survey". The Astronomical Journal. 123 (2): 1056–1085. Bibcode:2002AJ....123.1056T. doi:10.1086/338320.
- ^ Cooney, Walter R. Jr.; Pravec, Petr (September 2002). "Rotation Period and Lightcurve of Minor Planet 286 Iclea". The Minor Planet Bulletin. 29: 48–49. Bibcode:2002MPBu...29...48C.
- "Osculating elements from astorb-database for 286 Iclea". The Centaur Research Project. Retrieved 6 April 2015.
- Schmadel, Lutz D. (2012). Dictionary of Minor Planet Names. Berlin Heidelberg New York: Springer. p. 38. ISBN 9783642297182.
- Flammarion, Camille (1891). Uranie. Collection Guillaume.
External links
- 286 Iclea at AstDyS-2, Asteroids—Dynamic Site
- 286 Iclea at the JPL Small-Body Database
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