"SU-type asteroid" . "silicaceous" . "Sr" . "stony member" . "S-type asteroid" . "stony asteroids" . "Sr spectral class" . "SU/Sq-type" . "S-type (stony) asteroid" . "S spectral class" . "S-complex" . "S-type asteroid" . "type S" . "stony composition" . . "S-type" . "S spectral type" . "S-class" . . "stony (S-type) asteroid" . "stony" . "Sq-class asteroid" . "S-group" . . . "SK" . "stony asteroid" . . "S" . "type Sq" . "S(I)" . . "S-" . "Sq" . "Sk" . "S-types" . "SR-type asteroid" . . . "siliceous" . . "Sa" .