Joseph Jérôme Lefrançais de Lalande ( July 11 is the 192nd day (193rd in leap years) of the year in the Gregorian Calendar, with 173 days remaining. ...July 11, Events February 23 _ First performance of Handels Orlando, in London June 9 _ James Oglethorpe is granted a royal charter for the colony of Georgia. ...1732 – April 4 is the 94th day of the year in the Gregorian calendar (95th in leap years). ...April 4, 1807 was a common year starting on Thursday (see link for calendar). ...1807) was a France _ Wikipedia /**/ @import /skins/monobook/IE50Fixes. ...French Wikipedia does not yet have an article with this exact name. ...astronomer.

He was born at Bourg_en_Bresse is a city in eastern France, préfecture (capital) of the Ain département, and was capital of the former province of Bresse. ...Bourg_en_Bresse (now in the The départements (or departments) are administrative units of France, roughly analogous to British counties and are now grouped into 22 metropolitan and four overseas régions. ...département of Ain is also a figure from mythology; see Ain (mythology). ...Ain). His parents sent him to The Eiffel Tower has become the symbol of Paris throughout the world. ...Paris to study Law (a loanword from Danish_ Norwegian lov), in politics and jurisprudence, is a set of rules or norms of conduct which mandate, proscribe or permit specified relationships among people and organizations, provide methods for ensuring the impartial treatment of such people, and provide punishments for those who do not follow...law; but as a result of lodging in the Hôtel Cluny, where Joseph Nicolas Delisle had his observatory, he was drawn to astronomy, and became the zealous and favoured pupil of both Delisle and Pierre Charles Le Monnier (November 23, 1715 – May 31, 1799) was a French astronomer. ...Pierre Lemonnier. Having completed his legal studies, he was about to return to Bourg to practise as an advocate, when Lemonnier obtained permission to send him to Berlin ( pronounced: , German ) is the capital of Germany and its largest city, with 3,387,404 inhabitants (as of September 2004); down from 4. ...Berlin, to make observations on the lunar Parallax (Greek: παραλλαγή = alteration) is the change of angular position of two stationary points relative to each other as seen by an observer, due to the motion of said observer. ...parallax in concert with those of Abbé Nicolas_Louis de Lacaille (March 15, 1713 – March 21, 1762) was a French astronomer. ...NL Lacaille at the The Cape of Good Hope headland seen from the north 1888 Map of the Cape of Good Hope Triangular Postage Stamp The Cape of Good Hope is a headland in South Africa, near Cape Town, traditionally — and incorrectly — regarded as marking the turning point between the Atlantic Ocean and the...Cape of Good Hope.

The successful execution of this task obtained for him, before he was twenty_one, admission to the Academy of Berlin, as well as the post of adjunct astronomer to that of Paris. He now devoted himself to the improvement of the planetary theory, publishing in Events January 11 _ In Philadelphia, Pennsylvania, the first American life insurance company is incorporated. ...1759 corrected edition of Edmond Halley. ...Halley's tables, with a history of the Comet Halley as taken with the Halley Multicolor Camera on the ESA Giotto mission. ...celebrated comet whose return in that year he had aided Alexis Claude Clairault (or Clairaut) (May 3, 1713 _ May 17, 1765) was a French mathematician. ...Alexis Clairault to calculate. In 1762 Delisle resigned the chair of astronomy in the College de France in Lalande's favour. The duties were discharged by Lalande for forty_six years. His house became an astronomical seminary, and amongst his pupils were Jean Baptiste Joseph Delambre (September 19, 1749 in Amiens – August 19, 1822 in Paris) was a French mathematician and astronomer. ...JBJ Delambre, Giuseppe Piazzi. ...Giuseppe Piazzi, Pierre Méchain, and his own nephew Michel Lalande. By his publications in connection with the This article is about the astronomical phenomenon. ...transit of Venus of Events Baron Wolfgang von Kempelen exhibits the Mechanical Turk, a chess_playing machine May 14 _ Charles III of Spain sends Spanish missionaries, who found California missions in San Diego, Santa Barbara, San Francisco and Monterey and begin the settlement of California. ...1769 he won great fame. However, his difficult personality lost him some popularity.

Although his investigations were conducted with diligence rather than genius, Lalande's career was an eminent one. As a lecturer and writer he helped popularise astronomy; his planetary tables, into which he introduced corrections for mutual perturbations, were the best available up to the end of the (17th century _ 18th century _ 19th century _ more centuries) As a means of recording the passage of time, the 18th century refers to the century that lasted from 1701 through 1800. ...18th century; and the Lalande prize instituted by him in Events March 16 _ West Point is established. ...1802 for the chief astronomical performance of each year, still testifies to his enthusiasm for his favourite pursuit.

Notable works

• Traité d'astronomie (2 vols., 1764 enlarged. edition, 4 vols., 1771–1781; 3rd ed., 3 vols., 1792)
• Histoire céleste française (1801), giving the places of 50,000 stars
• Bibliographie astronomique (1803), with a history of astronomy from 1780 to 1802
• Astronomie des dames (1785)
• Abrégé de navigation (1793)
• Voyage d'un français en Italie (1769), a valuable record of his travel in 1765–1766.

He communicated more than one hundred and fifty papers to the Paris The French Academy of Sciences (Académie des sciences) is a learned society, founded in 1666 by Louis XIV at the suggestion of Jean_Baptiste Colbert, to encourage and protect the spirit of French scientific research. ...Academy of Sciences, edited the Connoissance de temps (1759–1774), and again (1794–1807), and wrote the concluding two volumes of the 2nd edition of Montucla's Histoire des mathématiques (1802).

References

• Mémoires de l'Institut, t. viii. (1807) (JBJ Delambre) Delambre, Hist. de l'astr. au XVIIIe siècle, p. 547;
• Magazin encyclopédique, ii. 288 (1810) (Mme de Salm);
• JS Bailly, Hist. de l'astr. moderne, t. iii. (ed. 1785); J Madler,
• Geschichte der Himmelskunde ii. 141;
• R Wolf, Gesch. der Astronomie;
• JJ Lalande, Bibl. astr p. 428;
• JC Poggendorff, Biog. Lit. Handworterbuch;
• M Marie Hist. des sciences, ix. 35.

See also

• Felis (constellation)

This article incorporates text from the The public domain comprises the body of all creative works and other knowledge—writing, artwork, music, science, inventions, and others—in which no person or organization has any proprietary interest. ...public domain The Eleventh Edition of the Encyclopædia Britannica ( 1911) in many ways represents the sum of knowledge at the beginning of the 20th century. ...1911 Encyclopædia Britannica.