4183 Cuno

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4183 Cuno
Cuno, imaged by radar
Cuno, imaged by radar
Discovered by Cuno Hoffmeister
Discovery date June 5, 1959
Named after
Cuno Hoffmeister
1959 LM
Minor planet category Apollo, Mars-crosser,
Orbital characteristics
Epoch December 1, 2005 (JD 2453705.5)
Aphelion 485.073 Gm (3.243 AU)
Perihelion 107.872 Gm (0.721 AU)
296.473 Gm (1.982 AU)
Eccentricity 0.636
1019.031 d (2.790 a)
18.827 km/s
Inclination 6.750°
Physical characteristics
Dimensions 4.5 km
3.6 h
Spectral type

4183 Cuno is an Apollo, Mars- and Venus-crosser asteroid. It was discovered in 1959 by Cuno Hoffmeister, from whom the asteroid takes its name.

Cuno is about 4–9 km in diameter and is an S-type asteroid, meaning that it is highly reflective and composed of nickel-iron mixed with iron- and magnesium-silicates.

In December 2000, Cuno was analysed by radar to determine its shape. The resultant images are lacking in detail, but indicate a rough sphere with some kind of concave depression 1–2 km in diameter.

4183 Cuno approaches the Earth to within 40 Gm six times in the 21st century. On 2012-May-20 Cuno made its closest Earth approach at a distance of 0.12182 AU (18,224,000 km; 11,324,000 mi).[1] It will not make a closer approach until 2093.


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