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'''M-type asteroids''' are a type of asteroid or minor planet. Asteriods are generally classified into broad categories such as C-type, S-type, or M-type according to their brightness and color. Brightness, or albedo, is a measurement of how well the object reflects light. Albedo ranges from 0 (perfectly black) to 1 (perfectly reflecting).<ref>http://www.planetary.org/explore/topics/near_earth_objects/asteroids_and_comets/facts.html</ref>
These mid-region main belt objects are relatively bright, with albedos ranging from 0.10 to 0.18. Composition is apparently dominated by metallic iron.
M-type asteroids inhabit the main belt's middle region.
.<ref>http://nssdc.gsfc.nasa.gov/planetary/text/asteroids.txt</ref> They make up some 10% of the total asteroid population.<ref>http://www.spaceguardindia.com/Asteroids.html</ref>
== References ==
<references/>
[[Category:Astronomy]]