astro.wikisort.org - Researcher

Aloysius Lilius (c. 1510 – 1576), also variously referred to as Luigi Lilio, Luigi Giglio, was an Italian doctor, astronomer, philosopher and chronologist, and also the "primary author" who provided the proposal that (after modifications) became the basis of the Gregorian Calendar reform of 1582.[1][2]

Aloysius Lilius
Bust of Aloysius Lilius
Born	c. 1510 Cirò, Calabria
Died	1576 (aged 65–66) Rome, Papal States
Known for	Gregorian calendar
Scientific career
Fields	Mathematician, astronomer, medic, chronologist, philosopher

The crater Lilius on the Moon is named after him, as is the asteroid 2346 Lilio. In computer science, the Lilian date is the number of days since the adoption of the Gregorian calendar on 15 October 1582.

Life and work

Not much is known about the early life of Lilius/Lilio/Giglio. It is known that he came from Calabria, Italy, from Cirò. He studied medicine and astronomy in Naples, after which he served Earl Carafa.[3] He settled in Verona and died in 1576. Although he was still alive at the time when his proposal was presented at Rome, it does not seem that he made the presentation; it was handled by his brother Antonio, also a physician and astronomer.[4]

He is primarily known as the inventor of the Gregorian Calendar: he wrote the proposal on which (after modifications) the calendar reform was based. Lilio's brother Antonio presented the manuscript to Pope Gregory XIII; it was passed to the calendar reform commission in 1575.[5] The commission issued a printed summary entitled Compendium novae rationis restituendi kalendarium (Compendium of a New Plan for the Restitution of the Calendar), printed in 1577 and circulated within the Roman Catholic world in early 1578 as a consultation document. Lilio's manuscript itself is not known to have survived; the printed 'Compendium' is the nearest known source for the details it contained.[6][7]

The processes of consultation and deliberation meant that the reform to the calendar did not occur until 1582, six years after the death of Luigi Lilio in 1576. The reform had by then received some modifications in points of detail by the reform commission, in which one of the leading members was Christopher Clavius, who afterwards wrote defences and an explanation of the reformed calendar, including an emphatic acknowledgement of Lilio's work, especially for his provision of a useful reform for the lunar cycle: "We owe much gratitude and praise to Luigi Giglio who contrived such an ingenious Cycle of Epacts which, inserted in the calendar, always shows the new moon and so can be easily adapted to any length of the year, if only at the right moments the due adjustment is applied."[8] The papal bull (Inter gravissimas) was issued on 24 February 1582 (year 1581 in Florentine Easter-based reckoning), ordering Catholic clergy to adopt the new calendar, and exhorting all Catholic sovereigns to do the same.[1]

The year 2010 was the 500th year since the Lilius' birth; several activities were organized by Italian astronomers in order to recognize the great work performed by him. In particular, in Torretta di Crucoli (Crotone, Italy), a new astronomical group was created and dedicated to Luigi Lilio.[9]

Notes

References

• Moyer, G. (November 1982). "Luigi Lilio and the Gregorian reform of the calendar". Sky and Telescope. 64 (11): 418–9. Bibcode:1982S&T....64..418M..
• Bond, J. J. (1966). Handy Book of Rules and Tables for Verifying Dates within the Christian Era. Russell & Russell, a Division of Atheneum House Inc..
• Encyclopædia Britannica. Chicago: Encyclopædia Britannica, Inc. 1980. p. 602. {{cite encyclopedia}}: Missing or empty |title= (help).

External links

• Herbermann, Charles, ed. (1913). "Aloisius Lilius" . Catholic Encyclopedia. New York: Robert Appleton Company.
• Circolo Astrofili Luigi Lilio Torretta

На других языках

---

- [en] Aloysius Lilius

---

[fr] Luigi Giglio

Luigi Giglio, ou Luigi Lilio[1], ou encore, de son nom latin, Aloysius Lilius, né à Psycròn (aujourd'hui Cirò) en Calabre (province de Crotone) vers 1510, mort avant 1576, sans doute à Rome, était un médecin et un astronome italien, connu comme le pionnier de la réforme du calendrier grégorien.

---

[it] Luigi Lilio

Luigi Giglio, in latino Aloysius Lilius (Cirò, 1510 – Roma, 1574), è stato un medico, astronomo e matematico italiano. Fu l'ideatore della riforma del calendario gregoriano.

---

[ru] Лилий, Алоизий

Алоизий Лилий (лат. Aloysius Lilius), а также Луиджи Лилио (итал. Luigi Lilio), Луиджи Джильо (итал. Luigi Giglio), Алуизе Балтазар Лилио (итал. Aluise Baldassar Lilio) (ок. 1510 — 1576) — итальянский врач, астроном, философ и хронолог, а также автор предложений, которые легли в основу календарной реформы 1582 года[1][2].

---

---