On October 19, 2010, the Catalina Sky Survey found a small near-Earth asteroid of the Apollo family; it was given the designation 2010 TD54. In principle, it is no different from similar dekameter-sized near-Earth asteroids.

What made it unique was the photometric observations made at Table Mountain Observatory (California, USA) using the 60-cm telescope. Photometric observations were obtained using Johnson BVRI filters. From the analysis of the data, the scientists determined that 2010 TD54 belongs to taxonometric class S. Using the average albedo of this class of asteroid in the calculations, astronomers were able to more precisely determine its diameter – 3 to 6 meters. But most interesting was the synodic period of the new asteroid, that is, the velocity of rotation on its axis – all of 42.00+/-0.03 seconds! I remind the reader that before 2010 TD54, the record belonged to asteroid 2008 HJ, whose rotational velocity was 42.67+/-0.04 seconds.

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