Annals of the Astronomical Observatory of Harvard College Volume 82
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1908 edition. Excerpt: ...also determined the longitude of its node, 103, and the inclination of its orbit, 1 24', which we have not attempted to deduce. American Journal of Science, 1880, CXX, 231. The elements of the orbit of 0, according to the present investigation, together with its mass, magnitude, and approximate position in 1909, computed solely from the perturbations of Uranus are as follows: --Epoch 1900.0 Longitude 105.8 Mean distance 51.9 Period 373.5 Mean annual motion 0.964 Mass in terms of the Sun Tbtwtt Mass in terms of the Earth 2.0 Angular diameter, if of the same density as Neptune 0."8 Magnitude, if of the same albedo as Neptune 11.5 Magnitude, if of the same density and albedo as Mars 13.4 Right ascension in 1909.0 7 47m Declination in 1909.0 +21 The last two lines preceding the figure on page 125 should read: "reduce the angle due to the tangential component. This angle we will call B'. The reduction we will call x. Hence B'--x=B=:8.2. In the case of Saturn, therefore, the angle B' will not be so much reduced, and we must consider 15.2 to be merely a minimum value." THE ASTRONOMICAL OBSERVATORY OF HARVARD COLLEGE EDWARD C. PICKERING, Directok Volume Lxi-part III A STATISTICAL INVESTIGATION OY COMETARY ORBITS BY WILLIAM H. PICKERING ASSISTANT PROFESSOR OF ASTRONOMY IN THE OBSERVATORY PRINTED FROM THE STURGIS FUND CAMBRIDGE, MASS. publisbeb bp tbe (c)bservator? 1911 CONTENTS OF PART III. Page Chapter XI. Classification Of Orbits 167 Distinction between Classes and Types, 170. Chronological Catalogue of Comets, 174. Elements of orbits published since Galle's Catalogue, 179. Data re-lating to the more accurately known Non-periodic Comets, 183. Summary of Chronological Catalogue, 186. Classification according to Brilliancy, 187..
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- 13 Sep 2013
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