Ulugh Beg's Zij-i Sultani

E316752

15th-century scientific work astronomical star catalogue planetary tables zij

Ulugh Beg's Zij-i Sultani is a 15th-century astronomical star catalogue and set of planetary tables compiled at the Samarkand observatory, renowned for its remarkably accurate measurements and lasting influence on later astronomy.

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All labels observed (2)

Label	Occurrences
Ulugh Beg astronomical tables	1
Ulugh Beg's Zij-i Sultani canonical	1

Statements (47)

Predicate	Object
instanceOf	15th-century scientific work ⓘ astronomical star catalogue ⓘ planetary tables ⓘ zij ⓘ
accuracyComparedToModern	errors of star positions typically within a few arcminutes ⓘ
alternativeName	Zīj-i Sultānī ⓘ surface form: Zij-i Jadid-i Sultani
approximateCompletionDate	around 1437 ⓘ
associatedWithSchool	Ulugh Beg observatory ⓘ surface form: Samarkand school of astronomy
basedOn	observations at Samarkand observatory ⓘ
compiledAt	Ulugh Beg observatory ⓘ surface form: Samarkand observatory
compiledBy	Ulugh Beg ⓘ
compiledInCity	Samarkand ⓘ
compiledInPresentDayCountry	Uzbekistan ⓘ
compiledInRegion	Timurid dynasty ⓘ surface form: Timurid Empire
compiledUsingInstrument	armillary sphere ⓘ large meridian arc sextant ⓘ
contains	planetary tables ⓘ star catalogue ⓘ tables of eclipses ⓘ tables of planetary positions ⓘ trigonometric tables ⓘ
dedicatedTo	Ulugh Beg ⓘ surface form: Ulugh Beg as sultan
editorOrCollaborator	Al-Qushji ⓘ surface form: Ali Qushji Qadi Zada al-Rumi ⓘ
epoch	15th century ⓘ
field	astronomy ⓘ
historicalSignificance	bridge between classical and early modern astronomy ⓘ one of the last major works of medieval Islamic astronomy ⓘ
includesMeasurement	length of the sidereal year ⓘ obliquity of the ecliptic ⓘ
influenced	later zij compilations ⓘ
influencedBy	Almagest ⓘ surface form: Ptolemy's Almagest earlier Islamic zijes ⓘ
language	Arabic ⓘ Persian ⓘ
notableFor	high accuracy of star positions ⓘ influence on later European astronomy ⓘ influence on later Islamic astronomy ⓘ precise planetary tables ⓘ
numberOfStars	about 1018 ⓘ
tradition	Islamic astronomy ⓘ
usedFor	astrological calculations ⓘ calendar reform ⓘ navigation ⓘ timekeeping ⓘ
usesCoordinateSystem	ecliptic coordinates ⓘ
usesUnit	sexagesimal system ⓘ

Referenced by (2)

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

Islamic astronomy → hasKeyText → Ulugh Beg's Zij-i Sultani ⓘ

Ulugh Beg → notableWork → Ulugh Beg's Zij-i Sultani ⓘ

this entity surface form: Ulugh Beg astronomical tables