1685 Toro is a member of the Apollo group of Earth-crossing asteroids, discovered by Carl Wirtanen in 1948 and rediscovered in 1964, whose closest approach takes it within 0.13 astronomical units (AU) of Earth. Radar observations indicate a rocky surface, thinly covered with dust.
|diameter||5 × 3 km|
|rotational period||10.18 hours|
|semimajor axis||1.37 AU|
|period||584.2 days (8/5 that of Earth)|