1           1974-02-18.91  Lagerkvist (1978) 
 2           1991-10-30.12  Chevreton et al. (1993) 
 3           1991-10-31.15  Chevreton et al. (1993) 
 4           1991-11-01.08  Chevreton et al. (1993) 
 5           1991-11-03.04  Chevreton et al. (1993) 
 6           1991-11-13.97  Lagerkvist et al. (1995) 
 7           1991-11-14.18  Lagerkvist et al. (1995) 
 8           1991-11-15.02  Lagerkvist et al. (1995) 
 9  1998-07-15--2007-02-05  USNO 
10  2003-11-15--2008-04-25  Catalina 
11  1999-10-07--2004-06-20  Catalina