retrograd.io
 
Greek · 1st century BCE (often placed c. 50 BCE)

Introduction to the Phenomena

Eisagōgē eis ta Phainomena; chapter on the planets

An elementary Hellenistic introduction to astronomy. It notes the planets' stations and retrogradations as part of their irregular motion and promises to explain the cause 'elsewhere' (ἐν ἑτέροις), but the surviving text gives no geometric planetary model (Evans & Berggren translation, pp. 198 and 118).

Author
Geminus
Date
1st century BCE (often placed c. 50 BCE)
Original language
Greek
Kind
Mathematical astronomy
Planets
Mercury, Venus, Mars, Jupiter, Saturn
On the shelf · Greece and Rome · 13−1800 → 2026
−1800−1500−1000−5001500100015002026
Span · 1st century BCE (often placed c. 50 BCE)Same shelfThis source’s span

Editions

2 editions.

YearEdition©
2006J. Evans and J. L. Berggren, Geminos's Introduction to the Phenomena: A Translation and Study of a Hellenistic Survey of Astronomy, Princeton University Press, 2006©
1898Gemini Elementa Astronomiae, ed. and German tr. K. Manitius, Leipzig: Teubner, 1898PD
© in copyright · PD public domain

Read it

One digitised copy.

  • Manitius's 1898 Teubner edition, Greek text with German translationInternet Archive / Getty Research InstitutePDOpen ↗

Copies stay with their holders; every link opens their site. Licence: PD public domain · CC BY · CC BY-SA · © rights reserved · ? not stated.

References

Also on the Greece and Rome shelf

DateSourcePlanetsKind
c. 2nd–1st century BCE (debated); reconstruction 2021Antikythera Mechanism: Front Cover InscriptionAnonymous (Greek makers)Me Ve Ma Ju SaMath. astronomy
Hipparchus fl. c. 150–127 BCE; reported by Ptolemy c. 150 CEHipparchus in Almagest IX.2Hipparchus of NicaeaMe Ve Ma Ju SaObservation
c. 1st century BCE – 5th century CE (papyri); edition 1999Astronomical Papyri from OxyrhynchusAnonymous (Greco-Egyptian scribes)GeneralMath. astronomy
1st century CE (Greek original); Arabic version c. 800 CECarmen AstrologicumDorotheus of SidonGeneralAstrological
c. 77–79 CENatural History, Book IIPliny the ElderMe Ve Ma Ju SaTheory / model
early 2nd century CEExpositio rerum mathematicarumTheon of SmyrnaMe Ve Ma Ju SaTheory / model