Ulrich Junius

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Ulrich Junius

Ulrich Junius (also: Ulrich Juni ; * October 17, 1670 in Ulm ; † March 20, 1726 in Leipzig ) was a German astronomer, geographer and mathematician.

Life

Junius was the son of the master weaver Georg Juni, who came from Tyrol and had settled in Swabia in 1638. After attending the school in his place of birth, he moved to the local high school and studied at the University of Jena from 1694 . His teachers here were especially the mathematicians Erhard Weigel (1625–1699) and Georg Albrecht Hamberger (1662–1716). In 1697 he moved to the University of Leipzig to devote himself primarily to astronomical observations with Christoph Pfautz (1645–1711). In 1700/01 he acquired the academic degree of Master of Philosophy with the dissertation De erroribus Astrologorum circa Subject Christi Genthliacum (Leipzig 1701) . In 1702 he became a member of the great prince's college and associate professor of mathematics.

In 1705 he took over the full professorship for mathematics at the Leipzig University, after which he became court mathematician to the Polish king and Saxon elector Augustus the Strong . He commissioned him to continue his education at European universities. Therefore, in 1706 he went on a scholarly journey through Germany, France , Holland and England . He got to know the greats of the time, such as Philippe de La Hire , Giovanni Domenico Cassini , Isaac Newton and John Flamsteed , with whom he was in constant correspondence from then on.

At the end of 1708 he returned to Leipzig and continued his work on the calendar he described. The writings that appeared as a result of his activity as a Leipzig university lecturer earned him far-reaching recognition. On September 22, 1723, he became a member of the Royal Prussian Academy of Sciences . He had also been given honorary offices at the Leipzig University. He took care of the economic tasks of the Leipzig University, was provost of the university villages in 1712 and rector of the alma mater in the summer semesters of 1712, 1716, 1720 and 1722 .

family

His daughter Johanna Wilhelmina († December 6, 1741 in Leipzig) married the natural scientist Johann Ernst Hebenstreit (1702–1757) on February 2, 1739 . She died seven days after the birth of her son Georg Ernst Hebenstreit (born November 30, 1741 in Leipzig; † 1781 ibid). Furthermore, his sons Ludwig Wilhelm Junius, Friedrich August Junius and Johann Friedrich Junius are known.

Works (selection)

  • De visu. Ulm 1694
  • De Mercurio sub sole videndo. Leipzig 1697
  • Mercurius in sole videndus sive Calculus rari hujus phaenomeni Anno MDCXCVIII d. XXIV. October. Style. Veter. Apparituri secundum praecipuorum maxime vero recentiorum autorum tabulas, cui accedit Calculus instantis eclipaeos lunae partialis The 19th Octob. Anni hujus currentis Astronomia reum coelestium studiosis geographis aliisque currentis Astronomis rerum coelestium studiosis geographis aliisque curiosis communicatas a Ulrico June, Ulmens. Leipzig 1697
  • Ulrici Junii Novae et accuratae motuum coelestium ephemerides ad annum… Leipzig 1702
  • Divino favente nvmine ad orationem avspicatoriam… Leipzig 1702
  • De principe mathematoricum Jo. Kepplero in scriptis editis atque ineditis. Leipzig 1711
  • Elogium Jo. Keppleri, Ortu Wurtembergici, continens. Leipzig 1711
  • Diss. De Erroribus Astrologum circa Subject Christi genthiliacum.
  • Programmata de Calculo Paschili.
  • Progr. De maleficis et mathematicis. Leipzig 1715

literature

Individual evidence

  1. ↑ Communications from the Geography Association in Leipzig . 1902, p. 8
  2. ^ John Francis Reynolds: Christian Fürchtegott Gellert's correspondence . De Gruyter, 1983, ISBN 3-11-008409-0 , p. 402
personal data
SURNAME Junius, Ulrich
ALTERNATIVE NAMES June, Ulrich
BRIEF DESCRIPTION German astronomer, geographer and mathematician
DATE OF BIRTH October 17, 1670
PLACE OF BIRTH Ulm
DATE OF DEATH March 20, 1726
Place of death Leipzig