Astronomy:286 Iclea
 Orbital diagram | |
| Discovery | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | 3 August 1889 |
| Designations | |
| (286) Iclea | |
| Pronunciation | French: [ikle.a] |
| Named after | Icléa |
| A889 PB | |
| Minor planet category | Main belt |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 117.95 yr (43,083 d) |
| |{{{apsis}}}|helion}} | 3.287 astronomical unit|AU (491.8 Gm) |
| |{{{apsis}}}|helion}} | 3.102 AU (464.1 Gm) |
| 3.195 AU (477.9 Gm) | |
| Eccentricity | 0.028921 |
| Orbital period | 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[2] |
| Rotation period | 15.365 h (0.6402 d)[3] |
| Geometric albedo | 0.0508±0.003 |
| Absolute magnitude (H) | 9.0 |
Iclea is a large main belt asteroid with the minor planet designation, 286 Iclea.[4] 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.[5][6] This object is orbiting the Sun at a distance of 3.19 astronomical unit|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.[1]
This asteroid has a classification of CX in the Tholen taxonomy, indicating a generally carbonaceous composition.[1] Infrared measurements indicate a cross-sectional diameter of approximately 94.3 km.[2] 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.[3]
References
- ↑ 1.0 1.1 1.2 "286 Iclea". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=2000286.
- ↑ 2.0 2.1 Tedesco, Edward F. et al. (February 2002). "The Supplemental IRAS Minor Planet Survey". The Astronomical Journal 123 (2): 1056–1085. doi:10.1086/338320. Bibcode: 2002AJ....123.1056T.
- ↑ 3.0 3.1 Cooney, W. R., Jr.; Pravec, P. (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. http://www.kentauren.info/menu/index1.htm?page=/cgi-bin/astorb2txt.pl%3FSuchname%3DFraternitas. Retrieved 6 April 2015.
- ↑ Schmadel, Lutz D. (2012). Dictionary of Minor Planet Names. Berlin Heidelberg New York: Springer. p. 38. ISBN 9783642297182. https://books.google.com/books?id=aeAg1X7afOoC&pg=PA38.
- ↑ Flammarion, Camille (1891). Uranie. Collection Guillaume. https://books.google.com/books?id=D0ySJ3HGYSkC.
External links
- 286 Iclea at AstDyS-2, Asteroids—Dynamic Site
- 286 Iclea at the JPL Small-Body Database
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