Nur ad-Din al-Bitruji

1200 - 1204

Photo of Nur ad-Din al-Bitruji

Icon of person Nur ad-Din al-Bitruji

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 48,027 page views. His biography is available in 21 different languages on Wikipedia (up from 20 in 2019). Nur ad-Din al-Bitruji is the 134th most popular astronomer (down from 128th in 2019), the 516th most popular biography from Spain (down from 32nd in 2019) and the 3rd most popular Spanish Astronomer.

Memorability Metrics

  • 48k

    Page Views (PV)

  • 67.11

    Historical Popularity Index (HPI)

  • 21

    Languages Editions (L)

  • 7.95

    Effective Languages (L*)

  • 1.75

    Coefficient of Variation (CV)

Page views of Nur ad-Din al-Bitrujis by language


Among astronomers, Nur ad-Din al-Bitruji ranks 134 out of 532Before him are Russell Alan Hulse, Andreas Cellarius, Walter Sydney Adams, Ingrid van Houten-Groeneveld, Arthur Auwers, and Vesto Slipher. After him are Ernst Öpik, N. R. Pogson, Maslama al-Majriti, Maria Mitchell, William Henry Pickering, and Guillaume Bigourdan.

Most Popular Astronomers in Wikipedia

Go to all Rankings


Among people born in 1200, Nur ad-Din al-Bitruji ranks 17Before him are Shiban, Joan, Countess of Flanders, Canute II of Sweden, Marcabru, George III of Georgia, and Michael I Komnenos Doukas. After him are Louis IV, Landgrave of Thuringia, Gilbert Horal, Ghiyas ud din Balban, Guillaume de Lorris, Smilets of Bulgaria, and Mstislav II of Kiev. Among people deceased in 1204, Nur ad-Din al-Bitruji ranks 10Before him are Alexios IV Angelos, Alexios V Doukas, Emeric, King of Hungary, Haakon III of Norway, Nicholas Kanabos, and Ban Kulin. After him are Guttorm of Norway, Suleiman II, Marie of Champagne, Minamoto no Yoriie, Berthold, Duke of Merania, and Michael Glykas.

Others Born in 1200

Go to all Rankings

Others Deceased in 1204

Go to all Rankings

In Spain

Among people born in Spain, Nur ad-Din al-Bitruji ranks 516 out of 2,595Before him are Santiago Carrillo (1915), Marcus Ulpius Traianus the Elder (30), Infante Carlos, Count of Montemolin (1818), Aurelius of Asturias (740), Francisco Pacheco (1564), and Ildefonsus (607). After him are Gaspar Sanz (1640), García Íñiguez of Pamplona (810), Juan Sánchez Cotán (1560), Abraham Zacuto (1452), Chintila (606), and Santiago Rusiñol (1861).


Among astronomers born in Spain, Nur ad-Din al-Bitruji ranks 3Before him are Avempace (1080) and Abū Ishāq Ibrāhīm al-Zarqālī (1029). After him are Maslama al-Majriti (950), Antonio de Ulloa (1716), and Josep Comas i Solà (1868).