Lot 84 of 222:
Olbers on calculating a comet's orbit, 1797  

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$1,500 - $2,500

Abhandlung über die leichteste und bequemste Methode die Bahn eines Cometen aus einigen Beobachtungen zu berechnen

Olbers, Wilhelm


Im Verlage des Industrie-Comptoirs



xxxii, 106 [i.e. 96], 80 pp. Folding engraved plate of diagrams. (8vo) 19.3x11.5 cm (7½x4½"), period half calf & boards, leather spine label. First Edition.

First edition of Olbers' treatise on his development of a new method for calculating a comet's parabolic orbit. As the DSB relates, "In a letter to F. X. von Zach, director of the newly founded observatory on the Seeberg, near Gotha, Olbers asked whether his treatise on this method should be printed, and if so, how this could best be done. After reading the treatise and using it with excellent results to compute the orbit of the comet of 1779, which had presented great difficulties to many astronomers, von Zach decided to see it through the press himself. It appeared at Weimar in 1797." Pages 81-90 are omitted in pagination, text is complete. This copy formerly in a library in Danzig, with old rubberstamps to title page and front free endpaper, paper spine label.

Lot Amendments

Rubbing top covers; some foxing/darkening within, very good.

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