The geography of the heavens, and class-book of astronomy: accompanied by a celestial atlas (1873)
Burritt, Elijah H. (Elijah Hinsdale), 1794-1838, Mattison, Hiram, 1811-1868, ed, Whitall, Henry, 1819-1887? Celestial planisphere · New York, Sheldon & company · leaf 266
1531, and 1607. The times of theirappearance had been nearly at equal and regular intervals ; theirperihelion distances were nearly the same ; and he finally provedthem to be one and the same comet, performing its circuit aroundthe Sun in a period varying a little from 16 years. It is, there-fore,… … This is the same comet that filled the eastern world with so much consternation in 1456kas stated on page 253, and became an object of sach abhorrence to the Church of Rome. The periodic times of the three comets just described, are as*bllow: Enckes, 1212 days.Bielas, 2461 days.Halleys, 28,000…
Constellations · Stars
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