Infrared /JHK/ photometry of asteroids

Astronomy and Astrophysics – Astronomy

Scientific paper

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Asteroids, Astronomical Photometry, Infrared Astronomy, Chemical Composition, Classifications, Infrared Spectra, Asteroids, Infrared, Photometry, Wavelengths, Spectra, Triad Asteroids, C Asteroids, S Asteroids, R Asteroids, M Asteroids, E Asteroids, Colors, 446 Asteroid, Catalogs, Observations, Composition, Reflectances, Magnitude

Scientific paper

We report JHK (1.2, 1.6, and 2.2 micron) photometry for 23 asteroids of various spectral types. All of the TRIAD asteroid classes were sampled. The C and S classes have distinct, infrared color domains. Most R-class asteroids fall within the S-color domain and the observed M asteroids fall within the C-color domain. The E asteroids have neutral colors. Asteroid 446 Aeternitas was discovered to have an unusual J-H color (0.88 mag).

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