(Q75171304)
Statements
0.8262
1±3 milliarcsecond per year
0±3 milliarcsecond per year
18.70
18.54
17.09±0.02
16.78±0.03
15.79±0.02
18.668±0.017
1 reference
18.318±0.023
1 reference
18.362±0.007
1 reference
18.37±0.008
1 reference
18.44±0.01
1 reference
68,000,000 centimetre per square second