Data Set Overview : This dataset includes the infrared spectrophotometry asteroid data reported in the following papers:  Lebofsky, L.A. 1980. Infrared reflectance spectra of asteroids: A search for water of hydration. Astron. J. 85, 573-585. [LEBOFSKY1980]  Feierberg, M.A., L.A. Lebofsky, and D.J. Tholen 1985. The nature of C- class asteroids from 3-micron spectrophotometry. Icarus 63, 183-191. [FEIERBERGETAL1985]  Lebofsky, L.A., T.D. Jones, P.D. Owensby, M.A. Feierberg, and G.J. Consolmagno 1990. The nature of low-albedo asteroids from 3-micron multi-color photometry. Icarus 83, 16-26. [LEBOFSKYETAL1990]  Jones, T.D., L.A. Lebofsky, J.S. Lewis, and M.S. Marley 1990. The composition and origin of the C, P, and D asteroids: Water as a tracer of thermal evolution in the outer belt. Icarus 88, 172-192. [JONESETAL1990]  For further information about these data, please contact Dr. Larry Lebofsky, University of Arizona.

Confidence Level Overview : This data is a compilation of results reported in the published literature. Error estimates are given for the individual data values. The individual references are to be consulted for any additional information regarding the confidence level of the observations.  Review : This dataset underwent formal external review on March 31, 1995.  Data Coverage and Quality : The PDS Three Micron dataset is intended to comprise a relatively coherent set of asteroid infrared spectrophotometry data taken by a single group of researchers working together. It does not purport to be a comprehensive survey of all asteroid infrared spectrophotometry.