176 Iduna

176 Iduna
Orbital characteristics 1 (ftp://ftp.lowell.edu/pub/elgb/astorb.html)
Orbit type Main belt
Semimajor axis 3.196 AU
Perihelion distance 2.679 AU
Aphelion distance 3.714 AU
Orbital period 5.71 years
Inclination 22.54°
Eccentricity 0.162
Physical characteristics 1 (ftp://ftp.lowell.edu/pub/elgb/astorb.html)
Diameter 121 km
Rotation period 11.289 hours
Spectral class 5 (http://spiff.rit.edu/richmond/parallax/phot/LCSUMPUB.TXT) G
Abs. magnitude 7.90
Albedo 4 (http://dorothy.as.arizona.edu/DSN/IRAS/index_iras.html) 0.083
History 2 (http://cfa-www.harvard.edu/iau/lists/NumberedMPs.html)
Discoverer C. H. F. Peters, 1877

176 Iduna is a large main belt asteroid. It has a composition similar to that of the largest main belt asteroid, 1 Ceres.

It was discovered by C. H. F. Peters on October 14, 1877. It is named after the Ydun, a club in Stockholm that hosted an astronomical conference.

An occultation of a star by Iduna was observed from Mexico on January 17, 1998.


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The minor planets
Vulcanoids | Main belt | Groups and families | Near-Earth objects | Jupiter Trojans
Centaurs | Trans-Neptunians | Damocloids | Comets | Kuiper belt | Oort cloud
(For other objects and regions, see: Binary asteroids, Asteroid moons and the Solar system)
(For a complete listing, see: List of asteroids. For pronunciation, see: Pronunciation of asteroid names.)
de:Iduna (Asteroid)

es:(176) Idunna

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