(253) Mathilde (Catalan Wikipedia)

Analysis of information sources in references of the Wikipedia article "(253) Mathilde" in Catalan language version.

Last modified: 08:56:30, 11 August 2026 (UTC)

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6^th place

15^th place

archive.org (Global: 6^th place; Catalan: 15^th place)

For semi-major axis a, orbital period T and eccentricity e, the average orbital speed is given by:
${\begin{aligned}v_{o}&={\frac {2\pi a}{T}}\left[1-{\frac {e^{2}}{4}}-{\frac {3e^{4}}{64}}-\dots \right]\\&=18.31\ {\mbox{km/s}}\left[1-0.0177-0.00008-\cdots \right]\\&\approx 17.98\ {\mbox{km/s}}\\\end{aligned}}\!\,$
For the circumference of an ellipse, see: H. St̀eocker, J. Harris. Handbook of Mathematics and Computational Science. Springer, 1998, p. 386. ISBN 0-387-94746-9.