1           1981-06-30.36  Harris et al. (1992) 
 2           1981-07-01.29  Harris et al. (1992) 
 3           1981-07-05.33  Harris et al. (1992) 
 4           1981-07-24.27  Harris et al. (1992) 
 5           1981-07-25.28  Harris et al. (1992) 
 6           1981-07-29.31  Harris et al. (1992) 
 7           1981-08-01.31  Harris et al. (1992) 
 8           1981-08-05.29  Harris et al. (1992) 
 9  1998-09-13--2008-03-26  USNO 
10  2004-02-18--2008-05-03  Catalina 
11  2005-07-03--2008-06-26  Siding Spring