A short course in astronomy and the use of the globes (1871)
Kiddle, Henry, 1824-1891 · New York, Chicago, Ivison, Blakeman, Taylor & co. · leaf 64
l aid ingiving the student a correct idea ofthe figure of the planets orbits.This diagram represents an ellipse,the eccentricity of which is -*-, ormuch greater than that of the mosteccentric of the minor planets. Itwill be apparent, therefore, that theactual fijurs of the planets orbits isbut… … 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…
Astronomy
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