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| Orbital characteristics 1 | |
|---|---|
| Orbit type | Main belt |
| Semimajor axis | 2.758 AU |
| Perihelion distance | 2.138 AU |
| Aphelion distance | 3.379 AU |
| Orbital period | 4.58 years |
| Inclination | 2.83° |
| Eccentricity | 0.225 |
| Physical characteristics 1 | |
| Diameter | 61 km |
| Rotation period 3 | 12.999 hours |
| Spectral class | SApproximately 17% of all known asteroids are of an S-type (for stony composition. S-types are moderately bright (with an albedo of 0. 22) and consist of metallic nickel- iron mixed with iron- and magnesium- silicates. They dominate the inner to central ma |
| Abs. magnitudeIn astronomy, absolute magnitude is the apparent magnitude, m an object would have if it were at a standardized distance away. It allows the overall brightnesses of objects to be compared without regards to distance. Absolute Magnitude for stars M In stel | 8.40 |
| AlbedoNote: This article discusses the physical or planetological property of albedo. For other usage, see Albedo (disambiguation). The albedo is a measure of reflectivity of a surface or body. It is the ratio of electromagnetic radiation reflected to the amoun 4 | 0.208 |
| History 2 | |
| Discoverer | R. LutherKarl Theodor Robert Luther ( April 16 1822 February 15 1900) was a German astronomer who searched for asteroids while working in Dusseldorf. Two of his discoveries are now known to have unusual properties: the binary asteroid with equal components 90 Anti, 1864Events January March January 21 Maori Wars: The Tauranga Campaign starts. February 27 American Civil War: The first Northern prisoners arrive at the Confederate prison at Andersonville, Georgia. March 1- Alejandro Mon Menendez takes office as Prime Minist |
82 Alkmene is a Main belt asteroidAn asteroid is a small, solid object in our Solar System, orbiting the Sun. An asteroid is an example of a minor planet (or planetoid , which are much smaller than planets. The asteroids are believed to be remnants of the protoplanetary disc which were no. It is probably a mixture of silicate rock and nickel- iron metals.
Alkmene was discovered by R. Luther on November 27, 1864 and maned after Alcmene, the mother of Herakles in Greek mythology.
A satellite has been suggested based on the lightcurve data. [1]
Main Belt asteroids