Memoir of the secular variations of the elements of the orbits of the eight principal planets, Mercury, Venus, the Earth, Mars, Jupiter, Saturn, Uranus, and Neptune; with tables of the same; together with the obliquinity of the ecliptic, and the precession of the equinoxes in both longitude and right ascension Stockwell, John N. (John Nelson), 1832-1920 creator text book Washington Smithsonian Institution 1872 1872
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ENG 19th century Astronomy Orbits Q11 .S68 vol. 18 Publication (Smithsonian Institution), 232 Smithsonian contributions to knowledge, [vol. XVIII, art. 3] https://www.biodiversitylibrary.org/bibliography/31715 3530734 s13000079 10.5962/bhl.title.31715 Library, Smithsonian Institution