In 1980 Hermes, one of these objects, came within 300,000 miles of the Earth
IN 1980 
HERMES, ONE OF THESE OBJECTS, CAME WITHIN 300,000 MILES OF THE 
EARTH .... NOW 6 BILLION MILES FROM EARTH, PIONEER 10 ORIGINALLY 
WAS... [DOC] [TLE] The Curious Tale of Asteroid Hermes | Science Mission Directorate [PAR] Oct 31, 2003 ... Six months later it would pass 300,000 miles from Earth's orbit, only a little more 
... 1980 wasn't the first time Hermes had sailed by unremarked.