1           1994-06-03.27  Dahlgren et al. (1998) 
2           1994-06-04.30  Dahlgren et al. (1998) 
3           1994-06-06.24  Dahlgren et al. (1998) 
4           1994-06-08.25  Dahlgren et al. (1998) 
5  1998-01-29--2007-04-25  USNO 
6  2003-11-23--2008-06-06  Catalina 
7  2005-09-30--2008-05-03  Mt. Lemmon