3581 Alvarez
Asteroid
3581 Alvarez, provisional designation 1985 HC, is a carbonaceous asteroid and a very large Mars-crosser on an eccentric orbit from the asteroid belt, approximately 13.7 kilometers in diameter. Wikipedia
Orbital period: 1,687 days
Orbits: Sun
Geometric albedo: 0.113
Minor planet category: Mars crosser
Named after: Luis Alvarez; Walter Alvarez; (American scientists)