Carlsberg Papyri (astronomical series)

CARLS-berg puh-PY-ree

Definition

The Carlsberg Papyri are a group of Egyptian manuscripts, named for the collection in Copenhagen that holds them, that include some of the most important surviving astronomical texts from Egypt. Two stand out. Papyrus Carlsberg I (with a fragmentary parallel, Ia) is a Roman-period commentary on the Book of Nut, the old cosmographic text about the goddess Nut and the stars. Papyrus Carlsberg 9 sets out a 25-year lunar cycle — a fixed scheme for predicting when each lunar month begins, worked out against the 365-day civil calendar.

In Tradition

Scholars value the Carlsberg astronomical papyri because they are late but technical: written in hieratic and demotic in the Roman period, they preserve and explain much older Egyptian material. Carlsberg I gives a line-by-line gloss that lets modern readers decode the temple version of the Book of Nut, and Carlsberg 9 is the rare Egyptian text that handles the calendar with real arithmetic rather than only myth or table.

In Practice

For anyone tracing how Egyptian sky-knowledge was passed down, the Carlsberg series is central. Carlsberg I and Ia (c. AD 144) carry a commentary on the Book of Nut — the Fundamentals of the Course of the Stars — making the much older Sethy I temple copy legible. Carlsberg 9, edited by Otto Neugebauer and Aksel Volten in 1938, was called by Richard Parker the only truly mathematical Egyptian astronomical text then published. It gives a simple rule tied to the civil calendar: across a repeating 25-year cycle, 16 years are "small" (12 lunar months) and 9 are "great" (13 months), with the extra month added on set years. The arithmetic is neat — 25 Egyptian civil years hold 9,125 days, and 309 lunar months about 9,124.95 — so the scheme stays almost in step. Parker placed the cycle's surviving form around 357 BCE; the regnal years named in the papyrus run from the 6th year of Tiberius (AD 19) to the 7th year of Antoninus Pius (AD 144).

Historical Origin

The Carlsberg Papyri are held in the Papyrus Carlsberg Collection, University of Copenhagen. Carlsberg I and Ia (Book of Nut commentary) were first edited by Hans Ostenfeld Lange and Otto Neugebauer (1940). Papyrus Carlsberg 9 (the 25-year lunar cycle) was edited by Otto Neugebauer and Aksel Volten in 1938 (Untersuchungen zur antiken Astronomie IV). Both are analyzed by Richard Parker and reproduced and discussed in Clagett, Ancient Egyptian Science Vol II; the regnal-year anchors span Tiberius year 6 (AD 19) to Antoninus year 7 (AD 144).

Definition

In Tradition

In Practice

Historical Origin

Further Reading