(Q80605120)
Statements
−1±3 milliarcsecond per year
4±3 milliarcsecond per year
18.966±0.02
1 reference
18.624±0.011
1 reference
18.623±0.035
1 reference
17.35±0.284
15.775±0.209
18.92
18.77
18.661±0.008
1 reference
18.635±0.009
1 reference
195,000,000 centimetre per square second