Claudius Ptolemaeus

E40246
Greco-Roman scholar astrologer astronomer geographer human mathematician

Claudius Ptolemaeus, commonly known as Ptolemy, was a Greco-Roman mathematician, astronomer, and geographer whose geocentric model of the universe and influential works like the Almagest shaped scientific thought for over a millennium.

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All labels observed (4)

Label Occurrences
Ptolemy 42
Claudius Ptolemy 12
Claudius Ptolemaeus canonical 4

Statements (51)

Predicate Object
instanceOf Greco-Roman scholar ⓘ
astrologer ⓘ
astronomer ⓘ
geographer ⓘ
human ⓘ
mathematician ⓘ
activeIn Alexandria ⓘ
alsoKnownAs Ptolemaios ⓘ
Claudius Ptolemaeus ⓘ
surface form: Ptolemy

Ptolemaios ⓘ
surface form: Κλαύδιος Πτολεμαῖος
birthPlace Alexandria ⓘ
Byzantine Egypt ⓘ
surface form: Roman Egypt
catalogued over 1,000 fixed stars ⓘ
citizenship Roman Empire ⓘ
compiled star catalogue in the Almagest ⓘ
contributedTo trigonometry ⓘ
developed geocentric model of the universe ⓘ
era Roman Antiquity ⓘ
surface form: Roman Imperial period
ethnicGroup Greek ⓘ
fieldOfWork astrology ⓘ
astronomy ⓘ
geography ⓘ
mathematics ⓘ
music theory ⓘ
optics ⓘ
floruit 2nd century ⓘ
c. 100–170 CE ⓘ
influenced Nicolaus Copernicus ⓘ
surface form: Claudius Copernicus

European Renaissance astronomy ⓘ
Islamic astronomy ⓘ
geography in the Middle Ages ⓘ
medieval astronomy ⓘ
influencedBy Hipparchus ⓘ
introduced equant in planetary theory ⓘ
languageOfWorkOrName Ancient Greek ⓘ
name Claudius Ptolemaeus self-link ⓘ
notableWork Almagest ⓘ
Geographia ⓘ
Harmonics ⓘ
Mathematike Syntaxis ⓘ
Optics ⓘ
Planetary Hypotheses ⓘ
Almagest ⓘ
surface form: Tetrabiblos
proposed Earth-centered cosmology ⓘ
systematized ancient Greek astronomy ⓘ
ancient geographic knowledge ⓘ
used chord tables ⓘ
deferents in planetary theory ⓘ
eccentrics in planetary theory ⓘ
epicycles in planetary theory ⓘ
workPeriod c. 127–151 CE ⓘ

Referenced by (59)

Full triples — surface form annotated when it differs from this entity's canonical label.

Claudius → wasBorneBy → Claudius Ptolemaeus ⓘ
Claudius → isKnownAs → Claudius Ptolemaeus ⓘ
subject surface form: Claudius Ptolemaeus
this entity surface form: Ptolemy
Johannes Kepler → influencedBy → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Ptolemaic system → namedAfter → Claudius Ptolemaeus ⓘ
this entity surface form: Claudius Ptolemy
Ptolemaic system → developedBy → Claudius Ptolemaeus ⓘ
this entity surface form: Claudius Ptolemy
Dialogue Concerning the Two Chief World Systems → influencedBy → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Nicolaus Copernicus → influencedBy → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Tycho Brahe → influencedBy → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
constellation Cancer → firstCatalogedBy → Claudius Ptolemaeus ⓘ
subject surface form: Cancer
this entity surface form: Ptolemy
Claudius Ptolemaeus → name → Claudius Ptolemaeus self-link ⓘ
Claudius Ptolemaeus → alsoKnownAs → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Buri → mentionedBy → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Marcomanni → mentionedBy → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Quadi → mentionedBy → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Canopus → mentionedBy → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy (geographer)
Gerardus Mercator → influencedBy → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Ulugh Beg → influencedBy → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Vestini → knownFrom → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
The School of Athens → depicts → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Ibn al-Haytham (Alhazen) → influencedBy → Claudius Ptolemaeus ⓘ
subject surface form: Ibn al-Haytham
this entity surface form: Ptolemy
Corona Australis → cataloguedBy → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Al-Sufi → influencedBy → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Almagest → author → Claudius Ptolemaeus ⓘ
this entity surface form: Claudius Ptolemy
Hipparchus → influenced → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Canis Major → listedBy → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Gemini → listedBy → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Regiomontanus → influencedBy → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Eridanus → firstCatalogedBy → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Kalisz → wasMentionedBy → Claudius Ptolemaeus ⓘ
this entity surface form: Claudius Ptolemy
Caucasian Albania → mentionedBy → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Strabo → influenced → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Caledonia → mentionedBy → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Isauria → mentionedBy → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Centaurus → listedBy → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Ptolemaios → latinizedNameOf → Claudius Ptolemaeus ⓘ
Ptolemaios → fullName → Claudius Ptolemaeus ⓘ
Borysthenes → mentionedIn → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Mathematike Syntaxis → author → Claudius Ptolemaeus ⓘ
this entity surface form: Claudius Ptolemy
Geographia → author → Claudius Ptolemaeus ⓘ
this entity surface form: Claudius Ptolemy
Harmonics → author → Claudius Ptolemaeus ⓘ
subject surface form: Harmonics (Ptolemy)
this entity surface form: Claudius Ptolemy
Optics → author → Claudius Ptolemaeus ⓘ
subject surface form: Optics (Ptolemy)
this entity surface form: Claudius Ptolemy
Planetary Hypotheses → author → Claudius Ptolemaeus ⓘ
this entity surface form: Claudius Ptolemy
Thabit ibn Qurra → influencedBy → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Aquarius → firstCataloguedBy → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Ptolemy’s 48 constellations → compiledBy → Claudius Ptolemaeus ⓘ
this entity surface form: Claudius Ptolemy
Toledo School of Translators → translatedAuthor → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Thermae Himerenses → mentionedBy → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Gerard de Kremer → influencedBy → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Ibn al-Shatir → correctedWorkOf → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy
Mountains of the Moon → mentionedBy → Claudius Ptolemaeus ⓘ
this entity surface form: Ptolemy