excentricité

[1988] The division of the Martian eccentricity from Hipparchos to Kepler: A history of the approximations to Kepler motion ; James Evans ; American Journal of Physics 56 (nov 1988) p. 1009 [lien]
[2012] The Eccentricity of the Sun: Kepler's Novel Method of Calculation ; Yaakov Zik ; Giora Hon ; Journal for the History of Astronomy 43 (2012) p. 181 [lien]