New CCD photometry and spectroscopy of the eight outer Jovian satellites obtained from November 1987 to February 1989 are presented. The photometry consists of light curves for J7-J12, plus BVRI colors for J6 and J8-J13, while spectroscopic data include reflectance spectra for J6 and J8-J11. The mean rotation periods and the light-curve amplitudes for the prograde and retrograde groups were found to be 11.1 hr and 0.20 mag, and 10.6 hr and 0.24 mag, respectively. A collisional origin for the shapes and rotations of the satellites is suggested. The satellites are spectrally diverse, with mean colors of five of them ranging from neutral to red. The reflectance spectra of the observed satellites are linear as a function of wavelength in the range 4000-7200 A, with no obvious absorption or emission features. The wide range of colors, plus the assumed low albedo for most of the satellites, indicate that the satellites resemble a mixture of both C- and d-type asteroids.