286 Iclea

286 Iclea
	Lightcurve-based 3D model of 286 Iclea
Discovery
Discovered by	Johann Palisa
Discovery date	3 August 1889
Designations
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°
Argument of perihelion	213.463°
Physical characteristics
Dimensions	94.30±2.6 km
Mass	(5.4±2.1)×1017 kg
Mean density	1.23 g/cm3
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.

Notes

↑ Calculated from its standard gravitational parameter GM = 0.036±0.014 km³/s².

References

1 2 3 "286 Iclea". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 11 May 2016.
1 2 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.
1 2 Fuentes-Muñoz, Oscar; Farnocchia, Davide; Giorgini, Jon D.; Park, Ryan S. (1 December 2025). "Asteroid Mass Estimation by Mutual Perturbations During Close Encounters After Gaia Focused Product Release". The Astronomical Journal. 170 (6): 353. Bibcode:2025AJ....170..353F. doi:10.3847/1538-3881/ae0cc9. ISSN 0004-6256. S2CID 283347135.
1 2 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. Archived from the original on 14 September 2020. 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
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
286 Iclea at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

This article about a C-type asteroid native to the asteroid belt is a stub. You can help Wikipedia by adding missing information.

[4] Calculated from its standard gravitational parameter GM = 0.036±0.014 km³/s².

[jpldata-1] 1 2 3 "286 Iclea". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 11 May 2016.

[Tedesco_et_al_2002-2] 1 2 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.

[Fuentes-Muñoz2025-3] 1 2 Fuentes-Muñoz, Oscar; Farnocchia, Davide; Giorgini, Jon D.; Park, Ryan S. (1 December 2025). "Asteroid Mass Estimation by Mutual Perturbations During Close Encounters After Gaia Focused Product Release". The Astronomical Journal. 170 (6): 353. Bibcode:2025AJ....170..353F. doi:10.3847/1538-3881/ae0cc9. ISSN 0004-6256. S2CID 283347135.

[Cooney_Pravec_2002-5] 1 2 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.

[CRP-6] "Osculating elements from astorb-database for 286 Iclea". The Centaur Research Project. Archived from the original on 14 September 2020. Retrieved 6 April 2015.

[Schmadel-7] Schmadel, Lutz D. (2012). Dictionary of Minor Planet Names. Berlin Heidelberg New York: Springer. p. 38. ISBN 9783642297182.

[Flammarion1891-8] Flammarion, Camille (1891). Uranie. Collection Guillaume.