Johann Hieronymus Schröter ( August 30 is the 242nd day of the year in the Gregorian Calendar (243rd in leap years), with 123 days remaining. ...August 30, Events May 11 _ War of Austrian Succession: Battle of Fontenoy _ At Fontenoy, French forces defeat an Anglo_Dutch_Hanoverian army including the Black Watch June 4 – Austrian army at Hohenfriedberg August 19 _ Beginning of the 45 Jacobite Rising at Glenfinnan September 12 _ Francis I is elected Holy Roman Emperor with...1745 – August 29 is the 241st day of the year in the Gregorian Calendar (242nd in leap years), with 124 days remaining. ...August 29, Events March 25 _ Friedrich Karl Ludwig, Duke of Schleswig_Holstein_Sonderburg_Beck dies and is succeeded by the later Friedrich Wilhelm, Duke of Schleswig_Holstein_Sonderburg_Glücksburg, his son and founder of the Schleswig_Holstein_Sonderburg_Glücksburg. ...1816) was a The Federal Republic of Germany ( German: Bundesrepublik Deutschland) is one of the worlds leading industrialised countries, located in the heart of Europe. ...German Wikipedia does not yet have an article with this exact name. ...astronomer.

In Events The Cornish language died out 2nd edition of Encyclopædia Britannica published January 3 _ American general George Washington defeats British general Charles Cornwallis at the Battle of Princeton. ...1777 he was appointed Secretary of the Royal Chamber of George III (George William Frederick) (4 June 1738–29 January 1820) was King of Great Britain, and King of Ireland from 25 October 1760 until 1 January 1801, and thereafter King of the United Kingdom of Great Britain and Ireland until his death. ...George III in Alternate meanings: Hanover (district), Hanover (region), Hanover (state), other uses Map of Germany showing Hanover Hanover (in German: Hannover [haˈnoːfɐ]), on the Leine river, is the capital of the state of Lower Saxony (Niedersachsen) in Germany. ...Hanover, where he made the acquaintance of two of Sir Wilhelm Friedrich Herschel (November 15, 1738 Hanover _ August 25, 1822 Windsor) was a German_born astronomer and composer who became famous for discovering the planet Uranus, and made many other astronomical discoveries. ...William Herschel's brothers. Herschel's discovery of Atmospheric characteristics Atmospheric pressure 120 kPa Hydrogen 83% Helium 15% Methane 1. ...Uranus inspired Schröter to pursue Astronomy, which etymologically means law of the stars, (from Greek: αστρονομία = άστρον + νόμος) is a science involving the observation and explanation of events occurring outside Earth and its atmosphere. ...astronomy more seriously, and he resigned his post and became chief magistrate of Lilienthal.

He acquired two telescopes made by Herschel and concentrated almost entirely on observations of the For other moons in the solar system see natural satellite. ...Moon and A planet (from the Greek πλανήτης, planetes or wanderers) is a body of considerable mass that orbits a star and that produces very little or no energy through nuclear fusion. ...planets. He made extensive drawings of the features of Mars is the fourth planet from the Sun in the solar system, named after the Roman god of war (the counterpart of the Greek Ares), on account of its blood red color as viewed in the night sky. ...Mars, yet curiously he was always erroneously convinced that what he was seeing was mere cloud formations rather than geographical features.

In Events January 25 _ The British Parliament passes the Constitutional Act of 1791, splitting the old province of Quebec into Upper and Lower Canada March 3 _ The U.S. Congress passes a resolution calling for the establishment of the United States Mint (U.S. Mint not created until next year). ...1791 he published an important early map of the Moon entitled Selenotopographische Fragmente sur genauern Kenntniss der Mondfläche.

In his later years he suffered the disruptions of the The Napoleonic Wars lasted from 1804 until 1815. ...Napoleonic Wars when his observatory was looted by French troops.

His drawings of Mars were not rediscovered until 1873 was a common year starting on Wednesday (see link for calendar). ...1873 (by François J. Terby) and were not published until Events January - April January 16-24 ? Siege of Geok Tepe ? Russian troops under general Skobeleff defeat Turkomans January 25 - Thomas Edison and Alexander Graham Bell form the Oriental Telephone Company February 5 - Phoenix, Arizona is incorporated. ...1881 (by For the animal painter, see Hendrik Van de Sande Bakhuyzen Hendricus Gerardus Van de Sande Bakhuyzen (April 2, 1838 – January 8, 1923) was a Dutch astronomer. ...H. G. van de Sande Bakhuyzen), well after his death.

Schröter crater on the Moon and Schroeter crater on Mars are named after him. Also, Vallis Schröteri (Schröter's Valley) on the Moon is named after him.

References

• William Sheehan & Richard Baum, Observation and inference: Johann Hieronymous Schroeter, 1745–1816, JBAA 105 (1995), 171 [1] (http://adsbit.harvard.edu/cgi-bin/nph-iarticle_query?1995JBAA..105..171S)