Editing Ali ibn Isa al-Asturlabi

{{Short description|Arab geographer and astronomer (fl. 832)}}
{{Other people|Ali ibn Isa}}{{Distinguish|Al-Badi' al-Asturlabi
}}
{{Use British English|date=February 2023}}
{{Infobox academic
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| name             = Alī ibn ʿĪsā al-Asṭurlābī
| native_name = علي بن عيسى
| native_name_lang   = ar
| birth_date       = before 858
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| death_date       = 
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| era              = [[Islamic Golden Age]]
| school_tradition = 
| main_interests   = [[Geography]], [[astronomy]]
| notable_ideas    = 
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}}
'''ʿAlī ibn ʿĪsā al-Asṭurlābī''' ({{langx|ar|علي بن عيسى}}, fl. 832) was a 9th century [[Arabs|Arab]] [[Islamic geography|geographer]] and [[astronomer]]. He wrote a [[treatise]] on the [[astrolabe]] and was an opponent of [[astrology]]. During the reign of [[al-Ma'mun]], and together with [[Khālid ibn ʿAbd al-Malik al-Marwarrūdhī]], he participated in an expedition to the Plain of [[Sinjar]] to measure the length of a [[latitude|degree]].{{sfn|Bolt|2007|p=34}} Differing reports state that they obtained a result of {{convert|56|mi}}, 56 and two-thirds, or 56 and one-quarter miles per degree.{{sfn|Mercier|2008|p=966}}

==References==
{{reflist}}

==Sources==
* {{cite book | last=Bolt  |first= Marvin | editor1-last=Hockey |editor1-first=Thomas |title=[[Biographical Encyclopedia of Astronomers]] |date=2007 |publisher=[[Springer Publishers]] |isbn= |edition= |access-date=|chapter=ʿAlī ibn ʿĪsā al-Asṭurlābī |language=|display-editors=etal |chapter-url=http://islamsci.mcgill.ca/RASI/BEA/Battani_BEA.htm }}
* {{cite book |last1=Mercier |first1=Raymond |editor1-last=Selin |editor1-first=Helaine |title=Encyclopaedia of the History of Science, Technology, and Medicine in Non-Western Cultures |date=2008 |publisher=[[Springer Nature]] |location=Berlin |isbn=978-14020-4-559-2 |page=|volume=1 |edition=2nd |url=https://books.google.com/books?id=kt9DIY1g9HYC |chapter=Geodesy}}

==Further reading==
* ʿAlī ibn ʿĪsā al-Asṭurlābī, Kitāb al-ʿamal bi-l-asṭurlāb , ed. by P. Louis Cheikho : "'Kitāb al-ʿamal bi-l-asṭurlāb li-ʿAlī ibn ʿĪsā", in: al-Mashriq 16 (1913), pp. 29–46; transl. German by Carl Schoy, "ʿAlī ibn ʿĪsā, Das Astrolab und sein Gebrauch", in: Isis 9 (1927), pp. 239–254.
{{Astronomer-stub}}

{{Islamic astronomy}}
{{authority control}}

{{DEFAULTSORT:Ali Ibn Isa}}
[[Category:Geographers from the Abbasid Caliphate]]
[[Category:Astronomers from the Abbasid Caliphate]]
[[Category:9th-century astronomers]]
[[Category:9th-century people from the Abbasid Caliphate]]
[[Category:9th-century Arab people]]