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Toro (minor planet 1685)
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 AU of Earth. Radar observations indicate a rocky surface, thinly covered with dust.
| diameter | 5 × 3 km |
| albedo | 0.15 |
| rotational period | 10.18 hours |
| semimajor axis | 1.37 AU |
| perihelion | 0.77 AU |
| aphelion | 1.96 AU |
| eccentricity | 0.44 |
| period | 584.2 days (8/5 that of Earth) |
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