(Q75397073)
Statements
0.6586
−3±3 milliarcsecond per year
3±3 milliarcsecond per year
18.908±0.02
1 reference
18.516±0.01
1 reference
18.87
18.68
18.545±0.029
1 reference
18.571±0.008
1 reference
18.515±0.009
1 reference
105,000,000 centimetre per square second