About Placidus de Titis
Lived 1603 – 1668 (aged 64–65). Placidus de Titis was a mathematician, astronomer, astrologer and monk, known for Placidian system.
Works De motibus directionum coelestium mobilium (1641). Physiomathematica sive coelestis philosophia (1650), Placidus' magnum opus, first published as Quaestionum physiomathematicarum libri tres, under the pseudonym of Didacus Prittus Pelusiensis, second edition by C. Francobacci und A. Scirota (pseudonyms of two of Placidus' students, F. Brunacci and F. M. Onorati).
Nuncius astronomicus (1654). Il corriere astronomico (1656). Tabulae primi mobilis cum thesibus et canonibus (1657). Commentaria in Ptolemaeum de siderum judiciis (1658). De siderum judiciis, 2 vols. (1660, 1665).
De diebus decretoriis et aegrorum decubitu, 2 vols. (1661, 1665). Ephemerides coelestium motuum (1661-1665).
Tocco di paragone onde evidentemente appare che l’astrologia nelle parti concesse da S. Chiesa è vera scienza, naturale, nobile, et utile quanto la filosofia (1666), in defense of astrology as a natural science.
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Important facts
Related people
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Contemporaries
People whose lives overlapped Placidus de Titis's
Frequently asked questions
Who was Placidus de Titis?
Italian astrologer
When was Placidus de Titis born?
Placidus de Titis was born on 25 December 1603 in Perugia.
When did Placidus de Titis die?
Placidus de Titis died in 1668 in Pavia.
What was Placidus de Titis's occupation?
Placidus de Titis was a mathematician, astronomer, astrologer and monk.
What was Placidus de Titis known for?
Placidus de Titis was known for Placidian system.
Sources & further reading
· Wikipedia: Placidus de Titis
Cite this page
APA: Biography.guide. (2026). Placidus de Titis. https://biography.guide/placidus-de-titis/
MLA: "Placidus de Titis." Biography.guide, https://biography.guide/placidus-de-titis/.
Chicago: "Placidus de Titis." Biography.guide. https://biography.guide/placidus-de-titis/.
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