‎HANSEN (P.A.)‎
‎Auseinandersetzung einer zweckmässigen methode zur berechnung der absoluten störungen der kleinen planeten - Première, deuxième et troisième parties in Abhandt d. K.S. Ges. d. Wissenscha. V & VIi - 1859-1862 -- EDITION ORIGINALE‎

‎1859/1862, 3 PARTIES reliées en volume in 4,demi-chagrin marron, dos orné de fers dorés (reliure de l'époque), (un coin émoussé, quelques rousseurs), pp. 43/218, 1/148, 83/335‎

Reference : 2577

‎---- EDITION ORIGNALE ---- BON EXEMPLAIRE ---- "The greatest master of celestial mechanics since Laplace". (DSB) ---- "Hansen was a leading german theoretical astronomer of the mid-nineteenth century... Between 1820 and 1825 he serve as assistant to Schumacher... In 1825, he succeed Encke as director of the private observatory of the duke of Mecklenburg at Seeberg. He remained its head until his death almost half a century later. During this time Hansen's contributions to astronomy were so numerous and enriched so many branches of that field that he was considered among the foremost astronomers of his time. He was above all a theoretician, concerned with the representation of the motion of the moon and the planets in the sky in terms of newtonian celestial mechanics...". (DSB VI)**2577/L6DE‎