(66391)_1999_kw4 | discoverer | lincoln_near-earth_asteroid_research <tsp> (66391)_1999_kw4 | epoch | 2004-07-14 <tsp> (66391)_1999_kw4 | orbitalperiod | 162447000 <tsp> (66391)_1999_kw4 | periapsis | 299196000000 <sep> 66391 moshup , provisional designation 1999 kw4, is a binary asteroid, classified as a near-earth object and potentially hazardous asteroid of the aten group, approximately 13 kilometers in diameter it was discovered on 20 may 1999, by lincoln near-earth asteroid research (linear) at the lincoln laboratory's experimental test site in socorro, new mexico, united states it is a mercury-crosser that comes extremely close to the sun at a perihelion of 02 au 
(66391) 1999 kw4 was discovered by lincoln near-earth asteroid research and had its epoch date on july 14th 2004.its periapsis is 29919600000.0 and has an orbital period of 16244700.0.it was discovered on 20 may 1999, by lincoln near-earth asteroid research