Was Uranus Observed by Hipparchus?

@article{Bourtembourg2013WasUO,
  title={Was Uranus Observed by Hipparchus?},
  author={Ren{\'e} Bourtembourg},
  journal={Journal for the History of Astronomy},
  year={2013},
  volume={44},
  pages={377 - 387}
}
  • R. Bourtembourg
  • Published 1 November 2013
  • Physics
  • Journal for the History of Astronomy
1. IntroductionAlthough Uranus was 'officially' discovered by William Herschel (1738-1822) on 13 March 1781, it had previously been sighted on 22 occasions between 1690 and 1771 by four different astronomers.' But there is reason to think that a naked-eye observation of the planet was made in Antiquity.The systematic error of -1 ° found in the longitudes of the Almagest star catalogue has raised many controversies about the identity of its author. Several ingenious theories2 have been suggested… 
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