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S-class asteroid





Animation of the rotation of 433 Eros
Animation of the rotation of 433 asteroid
A moderately bright, slightly reddish type of asteroid believed to be composed largely of silicate minerals (the "S" stands for "silicaceous") such as olivine and pyroxene. S-class asteroids are quite common in the inner part of the main asteroid belt, their proportion decreasing at greater distances from the Sun. They have an albedo of 0.10 to 0.28 and a reflectance spectrum that is flat at wavelengths longer than 0.7 micron. Examples include 433 Eros, 951 Gaspra, 15 Eunomia (see Eunomia family), and the 219km-diameter 29 Amphitrite. S-class asteroids may be the parent objects of stony-iron meteorites.


Related category

   • ASTEROIDS AND OTHER MINOR PLANETS - TYPES AND GROUPS