Abu'l-Abbas Ahmad ibn Muhammad ibn Kathir al-Farghani (Arabic: أبو العبّاس أحمد بن محمد بن كثير الفرغاني Abū al-ʿAbbās Aḥmad ibn Muḥammad ibn Kathīr, and known as Alfraganus in the West) was a Central Asian astronomer and one of the famous astronomers in 9th century. Arabic ( or just ) is the largest living member of the Semitic language family in terms of speakers. ... Central Asia is a region of Asia. ... An astronomer or astrophysicist is a person whose area of interest is astronomy or astrophysics. ... As a means of recording the passage of time the 9th century was that century that lasted from 801 to 900. ...

He was involved in the measurement of the diameter of the Earth together with a team of scientists under the patronage of al-Ma'mūn in Baghdad. His textbook Elements of astronomy on the celestial motions, written about 833, was a competent descriptive summary of Ptolemy's Almagest. It was translated into Latin in the twelfth century and remained very popular in Europe until the time of Regiomontanus. In the seventeenth century the Dutch orientalist Jacob Golius published the Arabic text on the basis of a manuscript he had acquired in the Near East, with a new Latin translation and extensive notes. Adjectives: Terrestrial, Terran, Telluric, Tellurian, Earthly Atmosphere Surface pressure: 101. ... Abu Jafar al-Mamun ibn Harun (also spelled Almanon and el-Mâmoûn) (786 – October 10, 833) (المأمون) was an Abbasid caliph who reigned from 813 until his death in 833. ... Baghdad (Arabic: ) is the capital of Iraq and of Baghdad Governorate. ... A medieval artists rendition of Claudius Ptolemaeus Claudius Ptolemaeus (Greek: ; c. ... Almagest is the Latin form of the Arabic name (al-kitabu-l-mijisti, i. ... Latin is an ancient Indo-European language originally spoken in Latium, the region immediately surrounding Rome. ... World map showing the location of Europe. ... Johannes Müller von Königsberg (June 6, 1436 – July 6, 1476), known by his Latin pseudonym Regiomontanus, was an important German mathematician, astronomer and astrologer. ...

Later he moved to Cairo, where he composed a very important treatise on the astrolabe around 856. There he also supervised the construction of the large Nilometer on the island of al-Rawda (in Old Cairo) in the year 861. Nickname: Al Qahirah (The Triumphant City) Egypt: Site of Cairo (top center) Coordinates: Government  - Governor Dr. Abdul Azim Wazir Area  - City 214 km²  (82. ... A 16th century astrolabe. ... – Herodotus Nilometer is the name given to one of several devices that are different in design but that all serve the same function: measuring water levels in the River Nile and thus allowing comparative historic records to be kept. ...

The Alfraganus crater on the Moon was named after him. Alfraganus is a small lunar impact crater that lies in the rugged highland region to the southwest of the Mare Tranquillitatis. ... Apparent magnitude: up to -12. ...

See also

• List of Muslim scientists and scholars

Please see: List of Arab scientists and scholars List of Iranian scientists and scholars Category: ...

Bibliography

• Dictionary of Scientific Biography, s.v.
• Jacobus Golius (ed.), كتاب محمد بن كثير الفرغاني في الحركات السماوية وجوامع علم النجوم، بتفسير الشيخ الفاضل يعقوب غوليوس / Muhammedis Fil. Ketiri Ferganensis, qui vulgo Alfraganus dicitur, Elementa astronomica, Arabicè & Latinè. Cum notis ad res exoticas sive Orientales, quae in iis occurrunt, Amsterdam 1669; Reprint Frankfurt 1986 and 1997.
• El-Fergânî, The Elements of Astronomy, textual analysis, translation into Turkish, critical edition & facsimile by Yavuz Unat, edited by Şinasi Tekin & Gönül Alpay Tekin, Harvard University 1998.
• Richard Lorch (ed.), Al-Farghānī on the Astrolabe. Arabic text edited with translation and commentary, Stuttgart, 2005, ISBN 3-515-08713-3.