286 Iclea

{{Short description|Main-belt asteroid}}

{{Use dmy dates|date=October 2019}}

{{Infobox planet

| minorplanet = yes

| background = #D6D6D6

| name = 286 Iclea

| discoverer = Johann Palisa

|image= Орбита астероида 286.png

|caption=Orbital diagram| discovered = 3 August 1889

| mpc_name = (286) Iclea

| pronounced = {{IPA|fr|ikle.a|lang}}

| alt_names = A889 PB

| named_after = Icléa

| mp_category = Main belt

| epoch = 31 July 2016 (JD 2457600.5)

| semimajor = {{cvt|3.19487|AU|Gm|1|adj=ri3|abbr=on}}

| perihelion = {{cvt|3.10248|AU|Gm|1|adj=ri3|abbr=on}}

| aphelion = {{cvt|3.28727|AU|Gm|1|adj=ri3|abbr=on|lk=on}}

| eccentricity = 0.028921

| period = {{cvt|2085.8|days|years|2|order=flip}}

| inclination = 17.9010°

| asc_node = 149.115°

| arg_peri = 213.463°

| mean_anomaly = 49.3850°

| dimensions = {{val|94.30|2.6|ul=km}}

| mass =

| density =

| rotation = {{cvt|15.365|h|d|abbr=on|lk=on}}

| spectral_type =

| abs_magnitude = 9.0

| albedo = {{val|0.0508|0.003}}

| mean_motion = {{Deg2DMS|0.172593|sup=ms}} / day

| orbit_ref =

| observation_arc = {{cvt|43083|days|years|order=flip}}

| uncertainty = 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 {{val|3.19|ul=AU}} with a period of {{convert|2085.8|days|years|disp=out|abbr=off}} 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.