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Table 2

Compare HIP2 and Gaia DR1 data.

HIP2 Gaia DR1

α 274.96 (deg) ± 1.48 (mas) 274.96 (deg) ± 0.23 (mas)
δ − 1.94 (deg) ± 1.02 (mas) − 1.94 (deg) ± 0.22 (mas)
π 51.12 ± 1.63 (mas) 52.35 ± 0.27 (mas)
μ α 1.15 ± 1.66 (mas / yr) − 0.47 ± 0.13 (mas / yr)
μ δ 1.99 ± 1.22 (mas / yr) − 0.18 ± 0.09 (mas / yr)
RV 13.8 ± 0.3 (km s-1)