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From Nordan Symposia
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  • ...rth’s axis. His cataloguing of 3222 stars was refined in 1807 by Friedrich Bessel, the father of modern astrometry. He made the first measurement of stellar
    5 KB (709 words) - 23:41, 12 December 2020
  • ...10, 1812), Gauss (1823), James Ivory (1825, 1826), Hagen (1837), Friedrich Bessel (1838), W. F. Donkin (1844, 1856), and Morgan Crofton (1870). Other contrib
    6 KB (892 words) - 02:37, 13 December 2020
  • ...in 1838 when the [[parallax]] of [[61 Cygni]] was measured by [[Friedrich Bessel]].
    39 KB (5,838 words) - 23:43, 12 December 2020