Biographical Encyclopedia of Astronomers

2014 Edition
| Editors: Thomas Hockey, Virginia Trimble, Thomas R. Williams, Katherine Bracher, Richard A. Jarrell, Jordan D. MarchéII, JoAnn Palmeri, Daniel W. E. Green

Severin, Christian

Reference work entry

Alternate Name


BornLomborg (Longberg), Jutland, Denmark, 4 October 1562

DiedCopenhagen, Denmark, 8 October 1647

Longomontanus, a professor of astronomy and observer, was one of  Tycho Brahe’s most important students and publicized the Tychonic system in the early seventeenth century. Christian Severin was born in a poor farmer’s family – that of Soeren Poulsen and Maren Christensdatter. After the early death of his father in 1570, he had to work on the farm. During the winter months, Severin received his first tuition from a pastor in Lomborg. Beginning in 1577, he attended the cathedral school of Viborg. At the age of 26, Severin matriculated from the University of Copenhagen, inscribing his name in the Latin form of Longomontanus. Within a year, he began working for Brahe and became his only long-term student, making astronomy his life’s work.

After Brahe had left his island of Hven, Longomontanus bade him farewell with a very well-meant letter of resignation dated 1...

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Selected References

  1. Anon. (1929). Forfatter-Lexicon for Kongeriget Danmark med tilhorende Bilande 1841 til efter 1858. Vol. 5, pp. 181–185. Copenhagen.Google Scholar
  2. Christianson, John Robert (2000). On Tycho’s Island: Tycho Brahe and His Assistants, 1570–1601. Cambridge: Cambridge University Press.Google Scholar
  3. Dreyer, J. L. E. (1890). Tycho Brahe: A Picture of Scientific Life and Work in the Sixteenth Century. (Reprint, New York: Dover, 1963.)MATHGoogle Scholar
  4. Thoren, Victor E. (1990). The Lord of Uraniborg: A Biography of Tycho Brahe. Cambridge: Cambridge University Press.Google Scholar

Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.Department of Earth ScienceUniversity of Northern IowaCedar FallsUSA