A high-school astronomy: in which the descriptive, physical, and practical are combined .. (1853)
Mattison, Hiram, 1811-1868 · New York, F. J. Huntingdon [etc.] · leaf 145
pe. 302. The periods of but few comets are known. That of1818, called EncMs Co-met, has a period of only3^-years. BielcCs Comethas a period of 6| years.That of 1682 (then firstnoticed with care, andidentified as the samethat had appeared in1456, 1531, and 1607)has a period of about 76years. It is… … 800. Velocity of comets ? Uniform or not ? Comet of 1472 ? Of 16S0 ? 301. Temperature? Comet of 1680 ? Supposed cause of their tails ? 302. Periods? Enckes ? Biela*s ? Baileys? That of 1680? Supposedperiods of others? Opinions of Prof. Nichol and Dr. Herschel ? 142 ASTRONOMY. 2250. Many are…
Astronomy
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