Insigniores orbitae cometarum proprietates 

Year of Conception:    June-July 1757
Year of Writing:             1760
Year of Publication:     1761

Subject:
Astronomy

Publication:
Insigniores orbitae cometarum proprietates. Augsburg, 1761.(2)

Translations:
Ueber die Eigenschaften der Cometenbewegung. In: J.H. Lambert's Abhandlungen zur Bahnbestimmung der Cometen, hrsg. von J. Bauschinger, 1902 (Ostwalds Klassiker der exakten Wissenschaften Nr. 133), pp. 3-108.(3)

Description:

Lambert explains and exemplifies a new method to find the orbit of a comet on the basis of three observations. The method is a geometric one, using conic sections and their projections.
 
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