afwiki Hipparchos; arwiki أبرخش; arzwiki هيبارخوس; astwiki Hiparco de Nicea; azwiki Hipparx; be_x_oldwiki Гіпарх; bewiki Гіпарх; bgwiki Хипарх; cawiki Hiparc . Hiparco de Nicea is on Facebook. Join Facebook to connect with Hiparco de Nicea and others you may know. Facebook gives people the power to share and. . Hipparchus, also spelled Hipparchos, (born, Nicaea, Bithynia [now Iznik, Turkey] —died after bc, Rhodes?), Greek astronomer and mathematician who made .

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A unha e a outra, en fin, non poden iluminarse mutuamente. Most of what is known about Hipparchus comes from Strabo ‘s Geography and Pliny ‘s Natural History in the 1st century; Ptolemy’s 2nd-century Almagest ; and additional references to him in the huparco century by Pappus and Theon of Alexandria in their commentaries on the Almagest.

Please note that our editors may make some formatting ncea or correct spelling or grammatical errors, and may also contact you if any clarifications are needed. Hipparchos, Hipparchus of Bithynia.

This model described the apparent motion of the Sun fairly well. These models, nicae assumed that the apparent irregular motion was produced by compounding two or more uniform circular motions, were probably familiar to Greek astronomers well before Hipparchus.

Views Read Edit View history. Help us improve this article! Parallax is the apparent displacement of an object when viewed from different vantage points.

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Our editors will review what you’ve submitted, and if it meets our criteria, we’ll add it to the article. Analysis of Hipparchus’s seventeen equinox observations made at Rhodes shows that the mean error in declination is positive seven arc minutes, nearly agreeing with the sum of refraction by air and Swerdlow’s parallax.

Between the solstice observation of Meton and his own, there were years spanningdays.

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Os traballos de Arquimedes a. Hipparchus also observed solar equinoxeswhich hipardo be done with an equatorial ring: He had two methods of doing this. Ptolemy later measured the lunar parallax directly Almagest V. Delambre, incast doubt on Ptolemy’s work. For more information see Discovery of precession. Cyrene Library of Alexandria Platonic Academy.

He was one of the first Greek mathematicians to do this, and in this way expanded the techniques available to astronomers and geographers.

Ancient Middle Eastern and Greek astronomy In astronomy: By using this site, you agree to the Terms of Use and Privacy Policy.

Hipparchus also studied the motion of the Moon and confirmed the accurate values for two periods of its motion that Chaldean astronomers are widely presumed [24] to have possessed before him, whatever their ultimate origin.


Ptolemy’s catalog in the Almagestwhich is derived from Hipparchus’s catalog, is given ed ecliptic coordinates. It seems he did not introduce many improvements in methods, but he did propose a means to determine the geographical longitudes of different cities at lunar eclipses Strabo Geografia 1 January It is not clear if this would be a value for the sidereal year actual value at his time modern estimate about Babylonian astronomy Egyptian astronomy.

Hipparchus – Wikidata

Ptolemy cites more than 20 observations made there by Hipparchus on specific dates from toas well as three earlier observations from to that may be attributed to him.

Hipparchus obtained information from Alexandria as well as Babylonbut it is not known when or if he visited these places. Vistas Ler Editar Editar a fonte Ver o historial. Ptolemy discussed this a century later at length in Almagest VI. In the second book, Hipparchus starts from the opposite extreme assumption: Retrieved 5 June Contact our editors with your feedback.

The lunar crater Hipparchus and the asteroid Hipparchus are more directly named after him.