ASTRONOMER

Habash al-Hasib al-Marwazi

770 - 874

Photo of Habash al-Hasib al-Marwazi

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Ahmad ibn 'Abdallah al-Marwazi, known as Habash al-Hasib (Persian: حبش الحاسب, lit. 'Abyssinian calculator', died c. 869) was a Persian astronomer, geographer, and mathematician from Merv in Khorasan, who was the first to describe the trigonometric ratios tangent, and cotangent. Read more on Wikipedia

Since 2007, the English Wikipedia page of Habash al-Hasib al-Marwazi has received more than 75,213 page views. His biography is available in 22 different languages on Wikipedia (up from 18 in 2019). Habash al-Hasib al-Marwazi is the 150th most popular astronomer (up from 194th in 2019), the 17th most popular biography from Turkmenistan (down from 12th in 2019) and the most popular Turkmen Astronomer.

Memorability Metrics

  • 75k

    Page Views (PV)

  • 57.76

    Historical Popularity Index (HPI)

  • 22

    Languages Editions (L)

  • 8.41

    Effective Languages (L*)

  • 1.80

    Coefficient of Variation (CV)

Among ASTRONOMERS

Among astronomers, Habash al-Hasib al-Marwazi ranks 150 out of 644. Before him are Carolyn S. Shoemaker, Cecilia Payne-Gaposchkin, Joseph-Nicolas Delisle, Mariam al-Asturlabi, George Biddell Airy, and Eugène Joseph Delporte. After him are Abu-Mahmud Khojandi, Guillaume Bigourdan, Antonie Pannekoek, Abu Maʿshar, Andrea M. Ghez, and Luigi Ferdinando Marsili.

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Contemporaries

Among people born in 770, Habash al-Hasib al-Marwazi ranks 8. Before him are Einhard, Pope Stephen IV, Michael II, Michael I Rangabe, Al-Hakam I, and Pepin the Hunchback. After him are Maria of Amnia, Bera, Count of Barcelona, Hugh of Tours, Theodosia, wife of Leo V, and Prokopia. Among people deceased in 874, Habash al-Hasib al-Marwazi ranks 4. Before him are Hasan al-Askari, Bayazid Bastami, and Antipope John VIII. After him are Girart de Roussillon, Salomon, King of Brittany, Gisela, daughter of Louis the Pious, Unruoch III of Friuli, and Yahya ibn Yahya.

Others Born in 770

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Others Deceased in 874

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In Turkmenistan

Among people born in Turkmenistan, Habash al-Hasib al-Marwazi ranks 17 out of 50. Before him are Abd Allah ibn al-Mubarak (736), Al-Muqanna (800), Najm al-Din Kubra (1145), Sufyan al-Thawri (716), Yelena Bonner (1923), and Al-Shahrastani (1086). After him are Mithridates II of Parthia (-150), Andronikos I of Trebizond (1101), Yahya ibn Khalid (701), Jaʻfar ibn Yahya (767), Serdar Berdimuhamedow (1981), and Dmitri Shepilov (1905).

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Among ASTRONOMERS In Turkmenistan

Among astronomers born in Turkmenistan, Habash al-Hasib al-Marwazi ranks 1. 

Turkmen born Astronomers

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