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Nur ad-Din al-Bitruji

1200 - 1204

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Nur ad-Din al-Bitruji (Arabic: أبو إسحاق البطروجي) (also spelled Nur al-Din Ibn Ishaq al-Betrugi and Abu Ishâk ibn al-Bitrogi) (known in the West by the Latinized name of Alpetragius) (died c. 1204) was an Iberian-Arab astronomer and a Qadi in al-Andalus. Al-Biṭrūjī was the first astronomer to present a non-Ptolemaic astronomical system as an alternative to Ptolemy's models, with the planets borne by geocentric spheres. Read more on Wikipedia

Since 2007, the English Wikipedia page of Nur ad-Din al-Bitruji has received more than 52,471 page views. His biography is available in 22 different languages on Wikipedia (up from 21 in 2019). Nur ad-Din al-Bitruji is the 144th most popular astronomer (down from 134th in 2019), the 597th most popular biography from Spain (down from 516th in 2019) and the 4th most popular Spanish Astronomer.

Memorability Metrics

  • 52k

    Page Views (PV)

  • 56.53

    Historical Popularity Index (HPI)

  • 22

    Languages Editions (L)

  • 7.08

    Effective Languages (L*)

  • 1.85

    Coefficient of Variation (CV)

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Among astronomers, Nur ad-Din al-Bitruji ranks 144 out of 531Before him are Antonie Pannekoek, Pierre Janssen, Joseph-Nicolas Delisle, Luigi Ferdinando Marsili, Maria Mitchell, and Annie Jump Cannon. After him are Giovanni Battista Hodierna, Peter Andreas Hansen, Guillaume Bigourdan, Eugène Joseph Delporte, Hermann Carl Vogel, and Bernard Lyot.

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Among people born in 1200, Nur ad-Din al-Bitruji ranks 22Before him are Joan, Countess of Flanders, Shiban, Peire de Montagut, Louis IV, Landgrave of Thuringia, Gilbert Horal, and Hadewijch. After him are Michael I Komnenos Doukas, Guillaume de Lorris, Anonymus, Pierre Basile, Richard de Bures, and Guillaume de Sonnac. Among people deceased in 1204, Nur ad-Din al-Bitruji ranks 10Before him are Alexios IV Angelos, Alexios V Doukas, Emeric, King of Hungary, Nicholas Kanabos, Haakon III of Norway, and Ban Kulin. After him are Minamoto no Yoriie, Berthold, Duke of Merania, Suleiman II, Marie of Champagne, Guttorm of Norway, and Michael Glykas.

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In Spain

Among people born in Spain, Nur ad-Din al-Bitruji ranks 597 out of 2,932Before him are Chintila (606), José de Espronceda (1808), Ibn al-Khatib (1313), Alonso Sánchez Coello (1531), Juan Goytisolo (1931), and Juan de Grijalva (1480). After him are Ramon Muntaner (1265), Lluís Llach (1948), Víctor Valdés (1982), Prince Ludwig Ferdinand of Bavaria (1859), Francisco Herrera the Elder (1576), and Emilia Pardo Bazán (1851).


Among astronomers born in Spain, Nur ad-Din al-Bitruji ranks 4Before him are Avempace (1080), Abū Ishāq Ibrāhīm al-Zarqālī (1029), and Maslama al-Majriti (950). After him are Antonio de Ulloa (1716) and Josep Comas i Solà (1868).