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Johann Bayer ( 1572 – March 7, 1625 ) was a German lawyer and uranographer ( celestial cartographer ).
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Johann and Bayer
Most of the brighter stars were assigned their first systematic names by the German astronomer Johann Bayer in 1603, in his star atlas Uranometria ( named after Urania, the Greek Muse of Astronomy, along with Uranus, the Greek god of the sky and heavens ).
The stars of the main asterism within a constellation are usually given Greek letters in their order of brightness, the so-called Bayer designation introduced by Johann Bayer in 1603.
Indeed, in 1603 Johann Bayer gave three of these clusters designations as if they were single stars.
Johann and 1572
The first system comes from the German astronomer Johann Bayer's ( 1572 – 1625 ) Uranometria published in 1603 and is for bright stars.
Two astronomers particularly known for attempting to expand Ptolemy's catalogue were Johann Bayer ( 1572 – 1625 ) and Nicolas Louis de Lacaille ( 1713 – 1762 ).
* Aller Praktik Grossmutter, after Rabelais ' Prognostication Pantagrueline ( 1572, Johann Scheible ed.
In 1572, Jean Taisner published from the press of Johann Birkmann of Cologne a work entitled Opusculum perpetua memoria dignissimum, de natura magnetis et ejus effectibus, Item de motu continuo.
Johann and –
* 1811 – First ascent of Jungfrau, third highest summit in the Bernese Alps by brothers Johann Rudolf and Hieronymus Meyer.
In the Battle of Abensberg on 19 – 20 April 1809, Napoleon gained a significant victory over the Austrians under Archduke Louis of Austria and General Johann von Hiller.
* 1727 – Premiere of Johann Sebastian Bach's St Matthew Passion BWV 244b at the St. Thomas Church, Leipzig
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