Abstract
The gravitational influence of Jupiter on Saturn produces, among other things, non-negligible changes in the eccentricity of Saturn that affect the magnitude of error of Ptolemaic astronomy. The value that Ptolemy obtained for the eccentricity of Saturn is a good approximation of the real eccentricity—including the perturbation of Jupiter—that Saturn had during the time of Ptolemy's planetary observations or a bit earlier. Therefore, it seems more probable that the observations used for obtaining the eccentricity of Saturn were done near Ptolemy’s time, and rather unlikely earlier than the first century AD. Even if this is not quite a demonstration that Ptolemy used observations of his own, my argument increases its probability and practically discards the idea that Ptolemy borrowed values or observations from astronomers further back than the first century AD, such as Hipparchus or the Babylonians.
Keywords No keywords specified (fix it)
Categories No categories specified
(categorize this paper)
ISBN(s)
DOI 10.1007/s00407-020-00271-y
Options
Edit this record
Mark as duplicate
Export citation
Find it on Scholar
Request removal from index
Revision history

Download options

PhilArchive copy


Upload a copy of this paper     Check publisher's policy     Papers currently archived: 65,581
External links

Setup an account with your affiliations in order to access resources via your University's proxy server
Configure custom proxy (use this if your affiliation does not provide a proxy)
Through your library

References found in this work BETA

Ptolemaic Planetary Models and Kepler’s Laws.Gonzalo Recio & Christián Carman - 2019 - Archive for History of Exact Sciences 73 (1):39-124.
Ptolemy.J. Feke & A. Jones - 2010 - In Lloyd Gerson (ed.), The Cambridge History of Philosophy in Late Antiquity. Cambridge, UK: Cambridge University Press. pp. 197-209.
The Arabic Version of Ptolemy's Planetary Hypotheses.G. J. Toomer & Bernard R. Goldstein - 1970 - Journal of the American Oriental Society 90 (2):296.
Ptolemy’s Treatment of the Outer Planets.Dennis Duke - 2005 - Archive for History of Exact Sciences 59 (2):169-187.
Mean Motions in Ptolemy’s Planetary Hypotheses.Dennis Duke - 2009 - Archive for History of Exact Sciences 63 (6).

Add more references

Citations of this work BETA

Add more citations

Similar books and articles

'Jupiter tames saturn': Astrology in Ficino's epistolae.Ruth Clydesdale - 2011 - In Stephen Clucas, Peter J. Forshaw & Valery Rees (eds.), Laus Platonici Philosophi: Marsilio Ficino and His Influence. Brill. pp. 198--117.
The Coming-to-Be of Hansen’s Method.William Harper & Curtis Wilson - 2014 - Archive for History of Exact Sciences 68 (4):409-497.
Jupiter's Aeneid: Fama and Imperium.Julia Hejduk - 2009 - Classical Antiquity 28 (2):279-327.
Jupiter's Aeneid: Fama and Imperium.Julia Hejduk - 2009 - Classical Antiquity 28 (2):279-327.
Ptolemaic Planetary Models and Kepler’s Laws.Gonzalo Recio & Christián Carman - 2019 - Archive for History of Exact Sciences 73 (1):39-124.
The Rationality of the Copernican Revolution.Martin V. Curd - 1982 - PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association 1982:3 - 13.

Analytics

Added to PP index
2021-01-04

Total views
3 ( #1,334,416 of 2,461,407 )

Recent downloads (6 months)
1 ( #448,382 of 2,461,407 )

How can I increase my downloads?

Downloads

Sorry, there are not enough data points to plot this chart.

My notes