In 1980 Hermes, one of these objects, came within 300,000 miles of the Earth
[DOC] [TLE] Asteroid - Wikipedia [PAR] In order of discovery, these were: 1221 Amor, 1862 Apollo, 2101 Adonis, and 
finally 69230 Hermes, which approached within 0.005 AU of Earth in 1937.