J, H, K photometry of 433 Eros and other asteroids

Details J, H, K photometry of 433 Eros and other asteroids J, H, K photometry of 433 Eros and other asteroids

May 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976icar...28...91c&link_type=abstract

Icarus, vol. 28, May 1976, p. 91-94.

Astronomy and Astrophysics

Astronomy

10

Asteroids, Astronomical Photometry, Infrared Astronomy, Extremely High Frequencies, Indium Antimonides, Ultrahigh Frequencies

Scientific paper

Results are reported for IR photometry of nine bright asteroids, including 433 Eros, which was conducted in the J, H, K, and (for Eros) L bands with an InSb photometer on the 1.3-m Kitt Peak telescope. It is found that the J-H and H-K color indices of all nine asteroids are slightly redder than those of the sun and that three C-type objects are somewhat redder in the same color indices than four S-types and an E-type. Eros is shown to have an unusually red J-K index; the shape of its IR spectral reflectance curve is attributed in part to the presence of the weak 2-micron pyroxene absorption band in the spectrum. The results show that JHK photometry is less diagnostic of asteroidal composition than higher-resolution IR spectrophotometry.

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