Vincentio (Vincenzio, Vincenzo) Reinieri (Renieri, Reiner) (30 March 1606 – 5 November 1647) was an Italian

mathematician A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, mathematical structure, structure, space, Mathematica ...

and

astronomer An astronomer is a scientist in the field of astronomy who focuses on a specific question or field outside the scope of Earth. Astronomers observe astronomical objects, such as stars, planets, natural satellite, moons, comets and galaxy, galax ...

. He was a friend and disciple of

Galileo Galilei Galileo di Vincenzo Bonaiuti de' Galilei (15 February 1564 – 8 January 1642), commonly referred to as Galileo Galilei ( , , ) or mononymously as Galileo, was an Italian astronomer, physicist and engineer, sometimes described as a poly ...

Biography

Born at

Genoa Genoa ( ; ; ) is a city in and the capital of the Italian region of Liguria, and the sixth-largest city in Italy. As of 2025, 563,947 people live within the city's administrative limits. While its metropolitan city has 818,651 inhabitan ...

, he was a member of the Olivetan order. His order sent him to

Rome Rome (Italian language, Italian and , ) is the capital city and most populated (municipality) of Italy. It is also the administrative centre of the Lazio Regions of Italy, region and of the Metropolitan City of Rome. A special named with 2, ...

in 1623. He met Galileo at

Siena Siena ( , ; traditionally spelled Sienna in English; ) is a city in Tuscany, in central Italy, and the capital of the province of Siena. It is the twelfth most populated city in the region by number of inhabitants, with a population of 52,991 ...

in 1633. Galileo had Reinieri update and attempt to improve his astronomical tables of the motions of Jupiter's moons, revising these tables for prediction of the positions of these satellites. Reinieri's work led him to

Arcetri Arcetri is a location in Florence, Italy, positioned among the hills south of the city centre. __TOC__ Landmarks A number of historic buildings are situated there, including the house of the scientist Galileo Galilei Galileo di Vincenzo B ...

, where he befriended

Vincenzo Viviani Vincenzo Viviani (April 5, 1622 – September 22, 1703) was an Italian mathematician and scientist. He was a pupil of Torricelli and Galileo.Pisa Pisa ( ; ) is a city and ''comune'' (municipality) in Tuscany, Central Italy, straddling the Arno just before it empties into the Ligurian Sea. It is the capital city of the Province of Pisa. Although Pisa is known worldwide for the Leaning Tow ...

: "Not infrequently I am in some battle with the

Peripatetic Peripatetic may refer to: *Peripatetic school, a school of philosophy in Ancient Greece *Peripatetic axiom, in philosophy *Peripatetic minority, a mobile population moving among settled populations offering a craft or trade. *Peripatetic Jats T ...

gentlemen, particularly when I note that those fattest with ignorance least appreciate your worth, and I have just given the head of one of those a good scrubbing." (Drake, p. 413-4) Reinieri became professor of mathematics at the

University of Pisa The University of Pisa (, UniPi) is a public university, public research university in Pisa, Italy. Founded in 1343, it is one of the oldest universities in Europe. Together with Scuola Normale Superiore di Pisa and Sant'Anna School of Advanced S ...

on the death of Dino Peri. He also taught

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there. His astronomical work consisted of adding new observations of Jupiter's moons to Galileo's. To some degree, Reinieri improved the Galilean tables on the motions of these satellites. Before his death, Galileo decided to place all of the papers containing his observations and calculations in the hands of Reinieri. Reinieri was to finish and revise them. Reinieri's observations of Jupiter's moons remained unpublished at the time of his premature death at Pisa in 1647. He was succeeded to the chair of mathematics by Famiano Michelini (c. 1600-1666).

Legacy

On Reinieri's death, papers concerning

longitude Longitude (, ) is a geographic coordinate that specifies the east- west position of a point on the surface of the Earth, or another celestial body. It is an angular measurement, usually expressed in degrees and denoted by the Greek lett ...

entrusted to him by Galileo are said to have been stolen by a man named Giuseppe Agostini (Fahie, p. 374). However, scholars such as Antonio Favaro doubt whether this

theft Theft (, cognate to ) is the act of taking another person's property or services without that person's permission or consent with the intent to deprive the rightful owner of it. The word ''theft'' is also used as a synonym or informal shor ...

actually occurred (see Antonio Favaro, ''Documenti inediti per la Storia dei MSS. Galileiani'', Rome, 1886, pp. 8–14). The crater Reiner on the

Moon The Moon is Earth's only natural satellite. It Orbit of the Moon, orbits around Earth at Lunar distance, an average distance of (; about 30 times Earth diameter, Earth's diameter). The Moon rotation, rotates, with a rotation period (lunar ...

is named after him.

Latin Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...
works

*''Expugnata Hierusalem, poema'', Publisher: Maceratae, Apud Petrum Salvionum (1628

*''Tabulae mediceae secundorum mobilium universales quibus per unicum prosthaphaereseon orbis canonem planetarum calculus exhibetur. Non solum tychonicè iuxta Rudolphinas Danicas & Lansbergianas, sed etiam iuxta Prutenicas Alphonsinas & Ptolemaicas'', Publisher: Florentiae, typis nouis Amatoris Massae & Laurentij de Landis (1639

* *''Tabulæ motuum cælestium universales : serenissimi magni ducis etruriæ Ferdinandi II. auspicijs primo editæ, & Mediceæ nuncupati, nunc vero auctæ, recognitæ, atque... Bernardini Fernandez de Velasco... iussu, ac sumptibus recusæ...''Publisher: Florentiæ : typis Amatoris Massæ Foroliuien., 164

Sources

*Drake, Stillman, ''Galileo at Work: His Scientific Biography'' (Chicago: University of Chicago Press, 1978), 464. *Fahie, J.J.
''Galileo: His Life and Work''
(London: John Murray, 1903), 374-5. -

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Biography

Legacy

Latin Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ... works

Sources

Further reading

Latin Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...
works