Ruprecht 20
Washington observations
No
Ref
T1
CM
MT1
T1T2
M51
N
0002
22
11.100
1.188
0.800
0.550
2
0003
22
10.874
1.964
1.214
0.824
2
0004
22
10.901
1.968
1.226
0.830
3
0005
22
11.290
1.565
0.988
0.659
2