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.   Parameters : The data file includes an entry for each individual spectrophotometric observation, with fields for the following parameters. The catalog number and name of the asteroid observed, the date of the observation, the wavelength at which the observation was made, the scaled reflectance measured for the asteroid at that wavelength, the error value for the scaled reflectance, and a reference code referring to one of the four published papers from which the data were taken.   Data : The dataset consists of a single data table, '3micron.tab'.   Media/Format : This dataset is released in the form of ASCII files which may be stored on disk or other magnetic medium and which may be distributed by ftp, email, real-time access by remote login, or by whatever means is most convenient.

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.   Limitations : This dataset collects data reported in the published literature. It is subject to the same limitations applicable to the original publications.