Previously accredited discoveries have now been reassigned to the various amateur astronomers using the observatory. These include Valter Giuliani, Piero Sicoli, Pierangelo Ghezzi, Francesco Manca, Paolo Chiavenna, Graziano Ventre and Augusto Testa. Marco Cavagna, was also an observer and discoverer of minor planets at Sormano until his death in 2005. The observatory's 0.5-meter telescope was named in his honor. It has discovered the following asteroids:  It has discovered the following asteroids:  The Rozhen Observatory has discovered the following asteroids:  It has discovered the following asteroids:  It has discovered the following asteroids:  It has discovered the following asteroids:  It has discovered the following asteroids:   It has discovered the following asteroids:  It has discovered the following asteroids:  It has discovered the following asteroids:  At Yorii Observatory, Japanese amateur astronomers Masaru Arai and Hiroshi Mori have discovered 45 minor planets (credited by the MPC as per 2016):Scr Tom Stafford discovered a number of asteroids since 1997, including 12061 Alena, 12533 Edmond, 13436 Enid, 13688 Oklahoma, at Zeno Observatory (observatory code 727) in Edmond, Oklahoma. It has discovered the following asteroids: