Readme里面说明了
149-154 F6.3 arcsec/yr pmRA ?Annual proper motion in RA J2000, FK5 system (赤经自行)
155-160 F6.3 arcsec/yr pmDE ?Annual proper motion in Dec J2000, FK5 system(赤纬自行)
161 A1 --- n_Parallax [D] D indicates a dynamical parallax, (视差类型:动力学还是三角视差)
otherwise a trigonometric parallax
162-166 F5.3 arcsec Parallax ? Trigonometric parallax (unless n_Parallax) (三角视差)
167-170 I4 km/s RadVel ? Heliocentric Radial Velocity (日心视向速度)
181-184 F4.1 mag Dmag ? Magnitude difference of double,
or brightest multiple (双星或多重星的星等差)
185-190 F6.1 arcsec Sep ? Separation of components in Dmag
if occultation binary.
191-194 A4 --- MultID Identifications of components in Dmag
195-196 I2 --- MultCnt ? Number of components assigned to a multiple
197 A1 --- NoteFlag a star indicates that there is a note
(see file notes)
恒星的岁差除了太阳据我所知是没有什么好方法测量的 |