Berry, Arthur,b. 1862 · London, J. Murray · leaf 442
70 and 80 years; §§ 290—2g2] Orbits of Comets 373 two of these have been seen at two returns, that known asOlberss comet in 1815 and 1887, and the Pons-Brookscomet in 1812 and 1884. Fourteen other comets with periodsvarying between 35 years (Enckes) and 14 years (Tuttles),have been seen at more… … Fig. 87.—The path of Halleys comet. with much certainty. Altogether the paths of about 230or 240 comets have been computed, though many arehighly uncertain. 292. In the theory of the tides the first important advancemade after the publication of the Mecanique Celeste wasthe collection of actual…
Astronomy
Internet Archive · Medical Heritage Library · Public Domain Mark 1.0. Free to use for anything.
