...The difference = 6,000,000 kilometers(3,720,000 miles), and its velocity is a little greater at perihelionthan at aphelion...
Camille Flammarion Frances A. Welby 「Astronomy for Amateurs」
...From thepoint of view of the importance of finding out the divergence of a cometaryorbit from a parabola, its period, and its aphelion distance, this increase ofrange attains the very highest value...
George Forbes 「History of Astronomy」
...At aphelion it recedes tothirty-five times the distance of the Earth, far beyond the orbit ofNeptune...
E. Walter Maunder 「Are the Planets Inhabited?」
...The relative dimensions and presentation of Mars, as seen in oppositionin perihelion, and in opposition in aphelion, are shown in the two rowsof figures...
Richard A. Proctor 「Half-hours with the Telescope」
...The solar tide varies between aphelion and perihelion from 1·9 to 2·1...
Oliver Lodge 「Pioneers of Science」
...Hence each planet is nearer to the sun at one partof its orbit than another; that point is called the perihelion,and the farthest point aphelion...
Henry Warren 「Recreations in Astronomy」
...But the eye ofscience sees it as having passed its aphelion beyond the orbitof Neptune in 1873, and is already hastening back to the warmthand light of the sun...
Henry Warren 「Recreations in Astronomy」
...At perihelionit is 128,000,000 miles from the sun, and at aphelion 154,000,000;hence its mean distance is about 141,000,000...
Henry Warren 「Recreations in Astronomy」
...In thesix weeks in which Mercury moves from aphelion to perihelion, itapproaches the Sun by fourteen millions of miles, and the heat received byit is increased 2½ times...
E. Walter Maunder 「Are the Planets Inhabited?」
...This makes the sun appeartwice as large, bright, and hot as seen and felt on Mercury atits perihelion than at its aphelion...
Henry Warren 「Recreations in Astronomy」
...
Distance from the sun, perihelion, 457,000,000 miles; aphelion,503,000,000 miles...
Henry Warren 「Recreations in Astronomy」
...
Mean distance of a planet, half the sum of the aphelion andperihelion distances...
Henry Warren 「Recreations in Astronomy」
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