1           1953-12-30.22  Groeneveld & Kuiper (1954) 
 2           1954-01-04.20  Groeneveld & Kuiper (1954) 
 3           1965-11-14.58  Chang et al. (1981) 
 4           1968-07-31.89  Wamsteker & Sather (1974) 
 5           1968-08-12.89  Wamsteker & Sather (1974) 
 6           1976-07-21.07  Scaltriti et al. (1981) 
 7           1976-07-21.10  Scaltriti et al. (1981) 
 8           1978-11-19.97  Scaltriti et al. (1981) 
 9           1978-11-19.97  Scaltriti et al. (1981) 
10           1978-11-19.98  Scaltriti et al. (1981) 
11           1978-11-19.99  Scaltriti et al. (1981) 
12           1985-08-22.07  Schober et al. (1994) 
13           1990-10-08.87  Belskaya et al. (1993) 
14           1990-10-10.89  Belskaya et al. (1993) 
15           1990-10-12.90  Belskaya et al. (1993) 
16           1990-10-13.90  Belskaya et al. (1993) 
17           1990-10-25.75  Belskaya et al. (1993) 
18           2007-11-23.28  F. Pilcher (2009) 
19           2007-12-06.27  F. Pilcher (2009) 
20           2007-12-19.19  F. Pilcher (2009) 
21           2008-02-03.72  Hanuš (2011) 
22           2009-02-28.39  Pilcher 
23           2009-03-08.40  Pilcher 
24           2009-03-17.44  Pilcher 
25           2009-03-19.43  Pilcher 
26           2009-03-31.35  Pilcher 
27           2009-05-05.26  Pilcher 
28           2009-05-09.26  Pilcher 
29           2009-05-11.25  Pilcher 
30  1997-05-27--2009-03-16  USNO 
31  2006-09-20--2010-11-02  Siding Spring 
32  1985-07-09--1992-04-30  La Palma 
33  1989-12-25--1992-06-21  Hipparcos