Photometric Studies of Asteroids.IX. Additional Light-Curves

Abstract

Fifteen asteroids were observed with the 36- and the 82-inch telescopes of the McDonald Observatory. Owing to the fast motions of the 36-inch, precise transfers to the U, B, V system could be made concurrently with the light-curve observations Iris was observed nearly pole-on, at ShOS right ascension and +20 declination Large obliquities often occur, and there apparently is some alignment of the poles. The ecliptic longitudes of eight asteroid poles were determined between 104 (284 ) and 194 (14 , with none occurring between 14 and 104 or between 194 and 284 .