Franz Xaver von Zach
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Baron Franz Xaver von Zach was an Austrian astronomer born in Pest, Hungary.
Franz Xaver, Baron Von Zach
L'attraction des montagnes, 1814
Heinrich Wilhelm Matthias Olbers was a German astronomer. He found a convenient method of calculating the orbit of comets, and in 1802 and 1807, discovered the second and the fourth asteroids Pallas a
Franz Xaver von Zach
…Using predictions made of the position of Ceres by Carl Friedrich Gauss, on 31 December 1801/1 January 1802, Zach (and, independently one night later, Heinrich Wilhelm Matthias Olbers) recovered Ceres after it was lost during its passage behind the Sun. After the death of the duke in 1804, Zach accompanied the duke's widow on her…
Lithograph by Rudolph Suhrlandt
Olbers monument in Bremen by Carl Johann Steinhäuser (1850)
Abhandlung über die leichteste und bequemste Methode die Bahn eines Cometen zu berechnen, 1797