Finding the composition of asteroids

Finding the composition of asteroids

. A prominent silicate absorption feature is present in the spectrum of sunlight reflected from the S-type asteroid 1685 Toro (dark dots with error bars). Asteroids like Toro may be the source of the stony meteorites recovered on Earth. The shaded spectrum is the reflection spectrum of a stony-chondrite meteorite. The wavelength is in units of micrometers, or 10-6 meters, designated as μm for short.

Copyright 2010, Professor Kenneth R. Lang, Tufts University