A short course in astronomy and the use of the globes (1871)
Kiddle, Henry, 1824-1891 · New York, Chicago, Ivison, Blakeman, Taylor & co. · leaf 65
ELLIPSE—ECCENTRICITY. \ 74. How great is the eccentricity of the planets1 orbits ? How is eccentricitymeasure! ? 75. What is the mean place of a planet ? The true place ? The equa-tion of the centre ? Illustrate by the diagram. 62 ORBITAL REVOLUTIONS uniform velocity; the true place is that in… … MEAN AND TRUE PLACES OF A PLANET. In the above diagram, the ellipse represents the actual orbit ofthe planet, and the dotted circle the corresponding circular orbit.The points marked T represent the true places, and those markedM, the mean places of the planet. The mean place is obviouslybefore or…
Astronomy
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