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In this study, the feasibility and utility of using a maneuverable nanosatellite laser guide star from a geostationary equatorial orbit have been assessed to enable ground-based, adaptive optics imaging of geosynchronous satellites with next-generation extremely large telescopes. The concept for a satellite guide star was first discussed in the literature by Greenaway and Clark in the early 1990s (“PHAROS: An Agile Satellite-Borne Laser Guidestar,” Proceedings of SPIE, Vol. 2120, 1994, pp. 206–210), and expanded upon by Albert in 2012 (“Satellite-Mounted Light Sources as Photometric Calibration Standards for Ground-Based Telescopes,” Astronomical Journal, Vol. 143, No. 1, 2012, p. 8). With a satellite-based laser as an adaptive optics guide star, the source laser does not need to scatter, and is well above atmospheric turbulence. When viewed from the ground through a turbulent atmosphere, the angular size of the …