His areas of research included the N-body problem, the stability of the Solar System, asteroid dynamics, asteroid families, satellite geodesy, planetary exploration, orbit determination and asteroid impact risk assessment. In his brilliant career he pioneered most of the previous topics. He is the founder of the two web services NEODyS and AstDyS, dedicated to providing general information on all known asteroids. Furthermore, he was the developer, together with his collaborators over the years, of the software suite OrbFit. He was a member of SIMCA (Italian Society of Celestial Mechanics and Astrodynamics) and of the
International Astronomical Union, where he occupied over eight different positions under several Commissions and Divisions: he was the President of Commission on “Celestial Mechanics & Dynamical Astronomy” (2003-2006), the Secretary of Commission for “Positions & Motions of Minor Planets, Comets & Satellites” (2012-2015), and the first President of the Cross-Division A-F Commission X2 “Solar System Ephemerides” (2015-2018). He also served as member of the Steering Committees of Divisions 1 and F. Among his hobbies, he enjoyed writing science fiction stories. Milani co-authored a book with
Anna Maria Nobili and
Paolo Farinella on non-conservative forces on artificial satellites. More recently, he published a book with Giovanni Federico Gronchi on
orbit determination and impact monitoring. ==Awards==