A.a=6378140,α=1/298.257 B.a=6378245,α=1/298.3 C.a=6378145,α=1/298.357 D.a=6377245,α=1/298.0
A.-0.012m;59.988m B.+0.012m;60.012m C.–0.012m;59.982m D.+0.012m;59.982m
A.–0.010m B.–0.007m C.+0.005m D.+0.007m