Dating the Almagest Star Catalogue Using Proper Motions: A Reconsideration

  title={Dating the Almagest Star Catalogue Using Proper Motions: A Reconsideration},
  author={D. Duke},
  journal={Journal for the History of Astronomy},
  pages={45 - 55}
  • D. Duke
  • Published 2002
  • Art
  • Journal for the History of Astronomy
When considering star catalogues, either modem or ancient, it is useful to distinguish between the dates of the actual star position measurements, which might range over many months or even years, and the epoch of the catalogue, i.e. the date corresponding to the star positions quoted in the catalogue. In order to prepare a catalogue at a particular epoch, the catalogue's author must adjust the star coordinates from their measured values using formulae appropriate to the specific coordinate… Expand
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