EOS, KORONIS, AND MARIA FAMILY ASTEROIDS - INFRARED (JHK) PHOTOMETRY

Infrared photometry at 1.2, 1.6, and 2.2 mu m (JHK) is reported for 56 asteroids in the Eos, Koronis and, Maria dynamical families. These da ta are consistent with a similar surface composition for all of the as teroids of each family. The infrared colors within each family cluster in the region observed for the S taxonomic class, but Eos asteroids m ay belong to a separable K class. Asteroid 243 Ida, which was observed by the Galileo spacecraft, is a typical member of the Koronis family. The average infrared colors of the Maria family are slightly redder t han those of the Eos and Koronis families. (C) 1995 Academic Press, In c.