Note that data only for those stars in the table is retrieved which have
the right ID available. If, for example, there is no BSC number in the table
(startable.bsc) for a specific star, no diameter will be read for it.
get_diameter Diameters, BSC identifier.
get_parallax Parallaxes, HDN identifier.
get_position Coordinates, HDN identifier.
get_ubvri UBVRI photometry, HDN identifier.
get_ubv UBV photometry, HDN identifier.
get_uvbybeta Strömgren photometry, HDN identifier.
get_feh [Fe/H] metallicity, HDN identifier.
get_toe Common names, BSC identifier.