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Topic: Urbain Le Verrier

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	CATHOLIC ENCYCLOPEDIA: Urbain-Jean-Joseph le Verrier
		Le Verrier soon received an appointment in the government administration of tobaccos; later he became a professor at the Collège Stanislas at Paris, and finally, in 1646, he was appointed professor of celestial mechanics in the faculty of sciences at the University of Paris.
		However, Le Verrier on this occasion also showed his masterly skill in handling the various problems of the reciprocal perturbations of the planets and other heavenly bodies, as is shown in his writings on the subject: "Formules propres à simplifier le calcul des perturbations" (1876); "Variations séculaires des orbites" (1876), etc.
		With all his erudition Le Verrier was a zealous adherent and true son of the Catholic Church; even as deputy of the Assembly he openly acknowledged and defended his Catholic faith before all the world.
	www.newadvent.org /cathen/09205b.htm (963 words)

	Imago Mundi - Urbain Le Verrier.
		Le Verrier (Urbain Jean-Joseph), astronome né le 11 mars 1811 à; Saint-Lô;, mort le 23 septembre 1877.
		Le Verrier s'est attiré de son vivant une renommée universelle en découvrant, par la seule puissance du calcul, une planète que l'on a nommée Neptune.
		Wolf, de Zurich, écrit en 1876 à; Le Verrier qu'il a vu une tache ronde passer sur le Soleil.
	www.cosmovisions.com /LeVerrier.htm (1047 words)

	Urbain Le Verrier - Wikipedia, the free encyclopedia
		Urbain Jean Joseph Le Verrier (March 11, 1811 – September 23, 1877) was a French mathematician who specialized in celestial mechanics.
		Le Verrier assisted Galle in locating the planet (September 1846); which was found within 1° of its predicted location at a point in Aquarius.
		Le Verrier on the French 50 Franc banknote
	en.wikipedia.org /wiki/Urbain_Le_Verrier (280 words)

	Historic Dispute : Is Urbain Le Verrier the true discoverer of Neptune (Site not responding. Last check: 2007-11-03)
		Le Verrier's estimated position was very close to that of Adams's, despite the difference in their methods.
		Le Verrier's (and Adams's) calculations were based on much guesswork, particularly in regards to the orbital distance of Neptune from the Sun.
		Le Verrier deserves to be recognized as the true discoverer of Neptune, as without his efforts the search would not have been made at that time.
	www.scienceclarified.com /dispute/Vol-1/Historic-Dispute-Is-Urbain-Le-Verrier-the-true-discoverer-of-Neptune.html (5708 words)

	Urbain Le Verrier
		Urbain Jean Joseph Le Verrier was born in 1811 at Saint-Lô;, France.
		Le Verrier expected to be declared the sole discoverer of Neptune, but months prior to his calculations being completed John Couch Adams, an English mathematician, had accomplished the same feat.
		Urbain Le Verrier died in Paris in 1877.
	starchild.gsfc.nasa.gov /docs/StarChild/whos_who_level2/leverrier.html (352 words)

	Hypothetical Planets
		The French mathematician Urbain Jean Joseph Le Verrier, who (along with John Couch Adams) had predicted the position of Neptune based on deviations in the motion of Uranus, believed similar forces were at work.
		Le Verrier, who was in the audience when Petit made the announcement, grumbled that one needed to take air resistance into account, something nobody could do at that time.
		Le Verrier then turned to the Berlin observatory, where Galle and his assistant d'Arrest found Neptune on the evening of September 23, 1846.
	www.solarviews.com /eng/hypothet.htm (8731 words)

	Hypothetical Planets
		The French mathematician Urbain Le Verrier, co-predictor with J.C. Adams of the position of Neptune before it was seen, in a lecture at 2 Jan 1860 announced that the problem of observed deviations of the motion of Mercury could be solved by assuming an intra-Mercurial planet, or possibly a second asteroid belt inside Mercury's orbit.
		Le Verrier investigated this observation, and computed an orbit from it: period 19 days 7 hours, mean distance from Sun 0.1427 a.u., inclination 12# 10', ascending node at 12# 59' The diameter was considerably smaller than Mercury's and its mass was estimated at 1/17 of Mercury's mass.
		Le Verrier then instead turned to the Berlin observatory, where Galle and his assistant d'Arrest found Neptune on the evening of Sept 23, 1846.
	www.seds.org /billa/tnp/hypo.html (9089 words)

	Le_Verrier (Site not responding. Last check: 2007-11-03)
		Le Verrier was better served by the German astronomer Galle (who found the planet in 1 hour) than Adams was by Airy who gave the task to Challis, the director of the Cambridge Observatory.
		Le Verrier discovered of a discrepancy in the motion in the perihelion of Mercury in 1855, soon after his appointment as director of the Paris Observatory.
		Le Verrier, however, attributed this to a planet, which he called Vulcan, closer to the Sun than Mercury or to a second asteroid belt so close to the Sun as to be invisible.
	mirror.math.nankai.edu.cn /mirror/www-history.mcs.st-and.ac.uk/history/Mathematicians/Le_Verrier.html (426 words)

	Urbain Le Verrier Summary
		Urbain Jean Joseph Le Verrier was born in 1811 to a poor family in a rural region of northwest France, near the English Channel.
		Urbain Jean Joseph Le Verrier(March 11, 1811 – September 23, 1877) was a French mathematician who specialized in celestial mechanics.
		Biography Le Verrier was born in Saint-Lô;, France.
	www.bookrags.com /Urbain_Le_Verrier (250 words)

	THE SURMISE OF VULCAN
		In 1845 a French astronomer by the name of Urbain Le Verrier (1811-1877), attempted to resolve this problem by proposing the existence of a planet lying inside the orbit of Mercury which he named Vulcan, after the Roman god of fire and the flsmith of the gods.
		Consequently, Le Verrier was delighted when, in 1859, he received a report from an amateur astronomer by the name of Dr. Lescarbault, a country physician, who lived in the small town of Orgenes, some 80 miles from Paris.
		Even though Le Verrier was the originator of the quest he was by no means the only astronomer of the time, or since, to be seeking an intra-Mercurian planet.
	www.ldolphin.org /unruh/vulcan.html (1096 words)

	Urbain Le Verrier - Wikipédia
		Urbain Jean Joseph Le Verrier (Saint-Lô, 11 mars 1811 — Paris, 23 septembre 1877) était un astronome et mathématicien français spécialisé en mécanique céleste.
		Urbain Le Verrier est devenu célèbre pour la découverte de la planète Neptune, plus précisément en raison de la méthode menant à cette découverte, celle des calculs mathématiques seuls, qui marque le triomphe de la mécanique céleste.
		Le Verrier entreprend alors de mettre en place un réseau d'observatoires météorologiques sur le territoire français, destiné avant tout aux marins afin des les prévenir de l'arrivée des tempêtes.
	fr.wikipedia.org /wiki/Urbain_Le_Verrier (931 words)

	Urbain Le Verrier
		Le Verrier thought an asteroid belt between Mercury and the Sun caused Mercury's unusual motion.
		Le Verrier shares the honor as the discoverer of Neptune with John Couch Adams.
		Urbain Jean Joseph Le Verrier died in Paris in 1877.
	starchild.gsfc.nasa.gov /docs/StarChild/whos_who_level1/leverrier.html (231 words)

	Neptune (Site not responding. Last check: 2007-11-03)
		Though still a student at the Berlin Observatory, Heinrich d'Arrest suggested that a recently drawn chart of the sky, in the region of Le Verrier's predicted location, could be compared with the current sky to seek the displacement characteristic of a planet, as opposed to a fixed star.
		However, the issue is now being re-evaluated by historians with the rediscovery in 1998 of the "Neptune papers" (historical documents from the Royal Greenwich Observatory), which had apparently been misappropriated by astronomer Olin Eggen for nearly three decades and were not rediscovered (in his possession) until immediately after his death.
		Shortly after its discovery, Neptune was referred to simply as "the planet exterior to Uranus" or as "Le Verrier's planet." The first suggestion for a name came from Galle.
	www.theamazingsky.com /Neptune.htm (1462 words)

	Early Cosmology (Site not responding. Last check: 2007-11-03)
		Notable achievments were made by Edmund Halley, Urbain Le Verrier and John Couch Adams.
		Adams and Le Verrier independently predicted the coordinates of Neptune in 1846 based on irregularities in the orbit of the newly discovered planet Uranus.
		Le Verrier convinced a German astronomer named Johann Galle to look at his coordinates and Galle did find Neptune very close to them after a brief search.
	www.drumright.ossm.edu /astronomy/heliocentric4.html (619 words)

	Louis Paul Urbain LE VERRIER (1848-1905) (Site not responding. Last check: 2007-11-03)
		Fils de Urbain LE VERRIER (X 1831), connu pour ses travaux d'astronomie et ses démêlés avec Delaunay.
		Le Comité supérieur de rédaction du Génie Civil vient de faire une nouvelle perte en la personne de M. Urbain Le Verrier, décédé à Eaubonne, près de Paris, le 2 juin 1907, à la suite d'une longue et douloureuse maladie.
		Le Verrier était également, depuis 1893, professeur aux cours préparatoires de l'École supérieure des Mines, où il était chargé du cours de physique.
	www.annales.org /archives/x/leverrier.html (467 words)

	Urbain Le Verrier - Wikipedia, la enciclopedia libre
		Urbain Jean Joseph Le Verrier nació en Saint-Lô, Francia, el 11 de marzo de 1811.
		Le Verrier le dio a Johann Gottfried Galle la posición del planeta y éste lo localizó en septiembre 1846; a menos de 1° de su situación prevista en la constelación de Acuario.
		Quizás espoleado por su descubrimiento, Le Verrier interpretó que la anomalía en la órbita de Mercurio consistente en un avance de su perihelio era debido a un planeta no descubierto al que se le llamó planeta Vulcano.
	es.wikipedia.org /wiki/Urbain_Le_Verrier (299 words)

	Neptune: History (Site not responding. Last check: 2007-11-03)
		Then in 1846 Urbain Le Verrier, a French mathematician, independently came up with his own prediction of a new planet, and his predicted position agreed closely with that of Adams.
		In the meantime, Le Verrier had sent his prediction to Johann Galle at the Berlin Observatory.
		In keeping with the practice of naming planets for mythical gods, Le Verrier suggested it be named Neptune, for the Roman god of the seas.
	dev.space.com /reference/neptune/history.html (470 words)

	Hypothetical Planets / Planet X, 1841-1992
		Adams presented two different solutions to the problem, assuming that the deviations were caused by the gravitation from an unknown planet.
		Nowadays, both Adams and Le Verrier share the credit of having predicted the existence and position of Neptune.
		On 30 Sept 1846, one week after the discovery of Neptune, Le Verrier declared that there may be still another unknown planet out there.
	www.bibliotecapleyades.net /hercolobus/esp_hercolobus_31.htm (3752 words)

	.:: Vallis Alpes : Solar System - Neptune ::.
		Astronomers found that Uranus was not keeping to its expected course, and some suspected that it was being pulled by the gravity of an as-yet-unseen planet.
		In France, mathematician Urbain Le Verrier calculated the new planet's position in 1846, beating the English-man John Couch Adams who had been working on the same problem.
		On September 23 that year, astronomers at the Berlin Observatory found Neptune close to Le Verrier's predicted position.
	www.apsylus.com /vallis-alpes/neptune.html (424 words)

	Neptune
		Though still a student at the Berlin Observatory, Heinrich d'Arrest suggested that a recently drawn chart of the sky, in the region of Le Verrier's predicted location, could be compared with the current sky to seek the displacement characteristic of a planet, as opposed to a stationary star.
		Shortly after its discovery, Neptune was referred to simply as "the planet exterior to Uranus" or as "Le Verrier's planet".
		Galle, "Account of the discovery of the planet of Le Verrier at Berlin", Monthly Notices of the Royal Astronomical Society, Vol.
	www.mlahanas.de /Greeks/Astro/Neptune.html (2175 words)

	Discoveries On Planets
		In 1841, John Couch Adams began investigating the by then quite large characteristic in the motion of Uranus.
		Adams presented two different solutions to the problem, assuming that the pulling was caused by the gravitation from an unknown planet.
		Sept 30, 1846 - one week after the discovery of Neptune, Le Verrier declared that there may be still another unknown planet out there.
	www.tqnyc.org /NYC062733/Planet-x.htm (821 words)

	ESA - Kids - Our Universe - Neptune
		Galle knew where to look because of calculations by French mathematician Urbain Le Verrier.
		Both Le Verrier and John Adams in England had realised that an unseen planet was pulling on Uranus, causing it to slow down or speed up.
		Neptune has at least five dark, narrow rings (named after Galle, Le Verrier, Adams and others who worked to discover the planet).
	www.esa.int /esaKIDSen/SEM7CTMZCIE_OurUniverse_0.html (267 words)

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