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Hipparchus

File:Head_of_Hipparchus_(cropped).jpg · Wikimedia Commons · See Wikimedia Commons

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Hipparchus

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Also known as Hipparchus of Nicaea, Hipparchus of Rhodes

Hipparchus (; , ;  BC) was a Greek astronomer, geographer, and mathematician. He is considered the founder of trigonometry, but is most famous for his incidental discovery of the precession of the equinoxes. Hipparchus was born in Nicaea, Bithynia, and probably died on the island of Rhodes, Greece. He is known to have been a working astronomer between 162 and 127 BC.

OverviewAI-generated

Hipparchus was a male astronomer, mathematician, and geographer who lived during the period of the Kingdom of Pergamon. Born in Nicaea in 190 BCE, he died in Rhodes in 120 BCE. He wrote in Ancient Greek and is associated with the notable work known as the Schröder–Hipparchus number. His field of work was primarily astronomy.

His writings include *Hipparchou Tōn Aratou kai Eudoxou Phainomenōn exēgēseōs vivlia tria* and *The geographical fragments of Hipparchus*. He is described in sources such as the *Encyclopædia Britannica* 11th edition and the *Nordisk familjebok*.

Synthesized by Vinony from 28 facts across 5 sources: Wikidata, Open Library, Last.fm, Crossref, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.

Person · Open Library

Born
fl. 190 B.C.
Died
127 B.C.
Works
8

Top works

  • Hipparchou Tōn Aratou kai Eudoxou Phainomenōn exēgēseōs vivlia tria =
  • ['Ipparchou Ton 'Aratou kai Eu'doxou phainoménon 'exegéseos biblia tria
  • Hipparchi bithyni in arati et eudoxi phaenomena libri III..
  • Hipparkhou Bithunou ton Aratou kai Eudoxou Phainomenon exegeseon biblia g
  • The geographical fragments of Hipparchus

via Open Library + Wikidata

Listeners · Last.fm

Listeners
1
Total plays
19

<a href="https://www.last.fm/music/Hipparchus">Read more on Last.fm</a>

via Last.fm · Hipparchus

Recent publications · Crossref

3 total works indexed

  1. ASTRONOMY AND LETTERS.

    · 1926

  2. The Geographical Fragments of Hipparchus. With an Introduction and Commentary

    · 1960

  3. Subbatical and Jubilee Years of the jews

    · 1851

via Crossref · CC0

Quotes

  • “I have composed a book on the length of the year in which I show that the tropical year contains 365 days plus a fraction of a day which is not exactly 1/4 days as the mathematicians-astronomers suppose, but which is less than 1/4 by about 1/300.”

via Wikiquote · CC BY-SA

Key facts

Person.name
Hipparchus
Person.image
Head of Hipparchus (cropped).jpg
Person.caption
Illustration based on a 19th century engraved amethyst from the Poniatowski gem collection
Person.birth_date
&nbsp;BC
Person.birth_place
Nicaea, Kingdom of Bithynia(modern-day İznik, Bursa, Turkey)
Person.death_date
&nbsp;BC (around age 70)
Person.death_place
Rhodes, Roman Republic(modern-day Greece)

via Wikipedia infobox

Wikidata facts

Instance of
human
Gender
male
Citizenship
Kingdom of Pergamon
Place of birth
Nicaea
Place of death
Rhodes
Occupation
geographer
Languages spoken
Ancient Greek
Field of work
astronomy
Image
Head of Hipparchus (cropped).jpg
Show 9 more facts
Commons category
Hipparchus
date of birth
0190-00-00
date of death
0120-00-00
described by source
Pauly–Wissowa
birth name
Ἵππαρχος
writing language
Ancient Greek
on focus list of Wikimedia project
Wikipedia:Vital articles/Level/4
name in native language
Hipparchus
maintained by WikiProject
WikiProject Mathematics
Sources (4)

via Wikidata · CC0

~48 min read

Encyclopedic overview

28 sections
Contents
  • Life and work
  • Babylonian sources
  • Geometry, trigonometry and other mathematical techniques
  • Lunar and solar theory
  • Motion of the Moon
  • Orbit of the Moon
  • Apparent motion of the Sun
  • Orbit of the Sun
  • Distance, parallax, size of the Moon and the Sun
  • Eclipses
  • Astronomical instruments and astrometry
  • Star catalog
  • Stellar magnitude
  • Coordinate system
  • Celestial globe
  • Arguments for and against Hipparchus's star catalog in the Almagest
  • Precession of the equinoxes (146–127&nbsp;BC)
  • Geography
  • Other work
  • Modern speculation
  • Legacy
  • Translations
  • See also
  • Notes
  • References
  • Works cited
  • Further reading
  • External links

Hipparchus (; , ; &nbsp;BC) was a Greek astronomer, geographer, and mathematician. He is considered the founder of trigonometry, but is most famous for his incidental discovery of the precession of the equinoxes. Hipparchus was born in Nicaea, Bithynia, and probably died on the island of Rhodes, Greece. He is known to have been a working astronomer between 162 and 127&nbsp;BC.

Hipparchus is considered the greatest ancient astronomical observer and, by some, the greatest overall astronomer of antiquity. He was the first whose quantitative and accurate models for the motion of the Sun and Moon survive. For this he certainly made use of the observations and perhaps the mathematical techniques accumulated over centuries by the Babylonians and by Meton of Athens (fifth century BC), Timocharis, Aristyllus, Aristarchus of Samos, and Eratosthenes, among others.

Excerpted from Wikipedia’s “Hipparchus” article, available under the CC BY-SA 4.0 licence.

Gallery (25)

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via Wikidata sitelinks · CC0