(Q80687848)
Statements
0.8030
−1±3 milliarcsecond per year
−1±3 milliarcsecond per year
18.32±0.03
18.624±0.02
1 reference
18.349±0.011
1 reference
18.73
18.55
18.445±0.008
1 reference
18.355±0.008
1 reference
78,000,000 centimetre per square second