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Giuseppe Piazzi

1746 - 1826

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Giuseppe Piazzi (US: PYAHT-see, Italian: [dʒuˈzɛppe ˈpjattsi]; 16 July 1746 – 22 July 1826) was an Italian Catholic priest of the Theatine order, mathematician, and astronomer. He established an observatory at Palermo, now the Osservatorio Astronomico di Palermo – Giuseppe S. Vaiana. Read more on Wikipedia

Since 2007, the English Wikipedia page of Giuseppe Piazzi has received more than 178,767 page views. His biography is available in 64 different languages on Wikipedia (up from 60 in 2019). Giuseppe Piazzi is the 24th most popular astronomer (up from 25th in 2019), the 546th most popular biography from Italy (up from 558th in 2019) and the 4th most popular Italian Astronomer.

Giuseppe Piazzi is most famous for discovering the first asteroid, Ceres, in 1801.

Memorability Metrics

  • 180k

    Page Views (PV)

  • 67.50

    Historical Popularity Index (HPI)

  • 64

    Languages Editions (L)

  • 13.17

    Effective Languages (L*)

  • 3.12

    Coefficient of Variation (CV)

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Among astronomers, Giuseppe Piazzi ranks 24 out of 531Before him are Neil deGrasse Tyson, Edmond Halley, Jocelyn Bell Burnell, Robert Woodrow Wilson, Abd al-Rahman al-Sufi, and Charles Messier. After him are Johannes Hevelius, Heinrich Wilhelm Matthias Olbers, Jamshīd al-Kāshī, Roger Joseph Boscovich, Avempace, and William Alfred Fowler.

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Among people born in 1746, Giuseppe Piazzi ranks 7Before him are Francisco Goya, Johann Heinrich Pestalozzi, Tadeusz Kościuszko, Carlo Buonaparte, Gustav III of Sweden, and Gaspard Monge. After him are Archduchess Maria Amalia of Austria, Maurice Benyovszky, William Jones, Sophia Magdalena of Denmark, Giovanni Battista Venturi, and Antoine Quentin Fouquier-Tinville. Among people deceased in 1826, Giuseppe Piazzi ranks 5Before him are Thomas Jefferson, Carl Maria von Weber, John Adams, and Joseph von Fraunhofer. After him are Philippe Pinel, René Laennec, John VI of Portugal, Joseph Proust, Elizabeth Alexeievna, Stamford Raffles, and Jean Anthelme Brillat-Savarin.

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In Italy

Among people born in Italy, Giuseppe Piazzi ranks 546 out of 4,668Before him are Rodolfo Graziani (1882), Elena Ferrante (1943), Marsilius of Padua (1275), Octavia the Younger (-69), Pope John XIV (1000), and Cosima Wagner (1837). After him are Dominic Savio (1842), Gentile Bellini (1429), Aloysius Gonzaga (1568), Philip of Swabia (1177), Ennius (-239), and Rita Levi-Montalcini (1909).


Among astronomers born in Italy, Giuseppe Piazzi ranks 4Before him are Galileo Galilei (1564), Giordano Bruno (1548), and Giovanni Domenico Cassini (1625). After him are Paolo dal Pozzo Toscanelli (1397), Giovanni Schiaparelli (1835), Girolamo Fracastoro (1476), Riccardo Giacconi (1931), Giovanni Battista Riccioli (1598), Angelo Secchi (1818), Annibale de Gasparis (1819), and Luigi Ferdinando Marsili (1658).