The Pioneer Venus Orbiter detected magnetic field disturbances that are correlated with 2201 Oljato. This could be caused by an outgassing of H at a rate of about 10−4 that for an active comet.Russell et al., 1984; Davies, 1986 Oljato's possible comet-like nature is supported by its unusual UV reflectance. It has been interpreted as Rayleigh scattering from a cloud of fine particles around it.McFadden et al., 1984; Rickman, 1985
