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All-sky visible and near infrared space astrometry

Tanga, Paolo; Ting, Yuan-Sen; Zwitter, Tomaž +27 more

The era of all-sky space astrometry began with the Hipparcos mission in 1989 and provided the first very accurate catalogue of apparent magnitudes, positions, parallaxes and proper motions of 120 000 bright stars at the milliarcsec (or milliarcsec per year) accuracy level. Hipparcos has now been superseded by the results of the Gaia mission. The s…

HIPPARCOS and the Future of Space Astrometry

Perryman, M. A. C.