High quality CCD cameras and powerful PCs are enabling advanced amateur astronomers to make high quality photometric and astrometric observations of a wide variety of solar system objects and to reduce them almost in real time. This has had important consequences for the observation of minor solar system bodies. In particular, new comets down as faint as 17th and 18th magnitude which were previously highly under-observed, can now count with extensive astrometry within a few days of discovery. At least one amateur astronomer is even working in astrometry of Kuiper Belt Objects which were thought, until recently, to be exclusively a professional province. A further field where even a modestly equipped amateur can make a major contribution is in the determination of rotation periods and physical parameters of Near Earth Objects (NEOs). This presentation examines the rotation curve of two objects - 1999 CV3 and 1999 HF1 - observed in collaboration between members of the "The Astronomer" Group and astro- physicists at Teide Observatory (Canary Islands) and shows how amateur and student observations can make a highly valuable contribution to this field.