1           1991-09-04.93  Shevchenko et al. (1992) 
 2           1991-09-15.90  Shevchenko et al. (1992) 
 3           1991-09-26.99  di Martino et al. (1994) 
 4           1991-09-27.92  di Martino et al. (1994) 
 5           1991-09-28.97  di Martino et al. (1994) 
 6           1991-10-01.77  Shevchenko et al. (1992) 
 7           1991-10-02.96  di Martino et al. (1994) 
 8           1991-10-08.83  Shevchenko et al. (1992) 
 9           1991-10-09.83  Shevchenko et al. (1992) 
10  1998-02-24--2007-07-03  USNO 
11  2005-10-31--2010-05-05  Catalina