Dating Ptolemy's Star Catalogue through Proper Motions: The Hipparchan Epoch

  title={Dating Ptolemy's Star Catalogue through Proper Motions: The Hipparchan Epoch},
  author={Andrei K. Dambis and Yurij N. Efremov},
  journal={Journal for the History of Astronomy},
  pages={115 - 134}
Cet article a pour theme la polemique a propos de la datation des releves d'etoiles de Ptolemee et l'explication des erreurs des longitudes des etoiles... 

Figures from this paper

The Dating of Ptolemy's Star Catalogue

L'auteur donne dans cet article des explications sur les methodes de datation des etoiles du catalogue stellaire de Ptolemee, en presentant les deux principaux modes de calcul, une datation standard

The Latitude of the Observer of the Almagest Star Catalogue

L'identite de l'observateur des etoiles et de leur position mentionnees dans l'almageste porte a polemique, car elle concerne a la fois Ptolemee et Hipparque, ou les deux a la fois. L'A. montre

Associations Between the Ancient Star Catalogues

A travers l'etude de l'Almageste de Ptolemee et du Commentaire aux Phenomenes d'Aratos d'Hipparque, l'auteur revient sur les points communs residant dans la retranscription de certaines donnees

Dating the Almagest Star Catalogue Using Proper Motions: A Reconsideration

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,

Āpa and Apāṃvatsa – enigmatic stars catalogued in Sūryasiddhānta

Indian siddhāntic texts are well known for their indigenous approach to solutions of problems in astronomy which also speaks of their expertise in mathematics. The text Sūryasiddhānta is considered

An astronomical analysis of Hipparchus' Commentaries

Hipparchus is considered the greatest astronomer of antiquity. However, his fame is due, more than to what he has done, or said, or written, to what the scientists of some generation or of a few



The History of Ptolemy’s Star Catalogue

Contents: Introduction.- The Stars of the Almagest.- Accusations.- The Rehabilitation of Ptolemy.- The Analysis of the Star Catalogue.- Structures in Ptolemy's Star Catalogue.- Theory and

Ancient Stellar Observations Timocharis, Aristyllus, Hipparchus, Ptolemy –; the Dates and Accuracies

SUMMARY By means of the method of least mean square error the epochs and accuracies of the stellar observations made by Timocharis, Aristyllus, Hipparchus and Ptolemy are deduced. The results

On the Origin of the Ptolemaic Star Catalogue: Part 1

The origin of the catalogue of stars found in Books 7 and 8 of Ptolemy's Almagest is a problem that has long vexed both astronomers and historians of science. Ptolemy says rather plainly that he

An Analysis of Errors in the Star Catalogues of Ptolemy and Ulugh Beg

The main peculiarity of Ptolemy's catalogue is the mean systematic error in the longitudes of the stars exceeding 1 • Many astronomers, in a European tradition going back to Tycho Brahe, I have

The Enigma of Ptolemy's Catalogue of Stars

On the right side of Raphael's School of Athens are two figures representing geography and astronomy. One, a young man with his back to the viewer wearing a crown and holding a terrestrial globe, is


Various tests are applied to Claudius Ptolemy's long-suspect claim that he himself observed the more than 1000 objects in the Ancient Star Catalog. An obvious consequence of observing under the

ref. I), 129. 23. Ibid

    ref. I), 197. 35. Ibid