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Image showing motion of 2002GT over 5 hours in a 15x15 arcmin field of view. As the asteroid is moving fast, the telescope tracking is not following stars but the asteroid itself; thus the stars are then trail-shaped while the asteroid is perfectly circular.
Observation of the Apollo-class asteroid (163249) 2002GT performed with the Omicron telescope of the C2PU project (https://c2pu.oca.eu/), by M. Devogèle(1,2), J-P. Rivet(1), P. Tanga(1), Ph. Bendjoya(1), L. Abe(1), and O. Suarez(1) from the Observatoire de la Côte d'Azur (1) and the Université de Liège (2). The C2PU 1 m telescope is based in the Calern observatory (premises of the Observatoire de la Côte d'Azur, France, MPC code 010).