The lightcurve and phase function of the asteroid 304 Olga

Photoelectric lightcurves of 304 Olga were obtained at Table Mountain Observatory in 1978 near opposition. From these observations, and several observations made from Lowell Observatory a month later, a rotation period of 18.36 + or - 0.02 hr and a light curve amplitude of 0.20 magnitude are obtained. The range of solar phase angle covered by the observations is from 2.0 to 22 deg. The resulting phase function is well fit by the Bowell and Lumme model (1979), with Q = 0.02. This low value of Q is suggestive of a low-albedo object.