1           1958-02-16.24  Gehrels & Owings (1962) 
 2           1958-03-05.20  Gehrels & Owings (1962) 
 3           1962-01-09.95  Chang & Chang (1962) 
 4           1962-01-26.60  Chang & Chang (1962) 
 5           1962-01-27.45  Chang & Chang (1962) 
 6           1962-01-29.53  Chang & Chang (1962) 
 7           1962-01-30.57  Chang & Chang (1962) 
 8           1962-02-07.21  Chang & Chang (1962) 
 9           1962-02-08.53  Chang & Chang (1962) 
10           1969-12-31.18  Taylor (1978) 
11           1970-01-01.17  Taylor (1978) 
12           1975-05-12.19  Taylor (1978) 
13           1975-05-13.33  Taylor (1978) 
14           1975-05-14.24  Taylor (1978) 
15           1979-03-30.96  Pavlovski et al. (1981) 
16           1979-04-02.99  Pavlovski et al. (1981) 
17           1983-01-08.42  Harris et al. (1999) 
18           1983-02-20.35  Weidenschilling et al. (1990) 
19           1983-02-22.17  Weidenschilling et al. (1990) 
20           1983-02-23.42  Weidenschilling et al. (1990) 
21           1987-01-10.42  Lagerkvist et al. (1989) 
22           1987-02-07.21  Weidenschilling et al. (1990) 
23           1987-02-19.16  Melillo (1987) 
24           1987-02-20.14  Melillo (1987) 
25  1998-09-14--2004-06-20  USNO