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Helene (SXII) is the leading Lagrange librator in the Saturn/Dione L4 point. Telesto (SXIII) and Calypso (SXIV) are the leading and following Lagrange librators in the Saturn/Tethys L4 and L5 points respectively. While these were ground-based discoveries in 1980, Voyager images have provided approximate dimensions and albedos.
We obtained CCD BVRI observations of these three satellites in 1992 and 1993. We present magnitudes, color indexes, albedos and leading/trailing albedo and color variations.
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