Theon of Smyrna: Book on Astronomy

§ 2. On the figure and position of the Earth.
§ 3. On the surface of the Earth and the sea.
§ 4. On the rest of the Earth and its proportion to the heavens.
§ 5. On the circles of the celestial sphere.
§ 6. On the names of the wandering stars i.e., the planets.
§ 7. On the fixed stars.
§ 8. On the motions of the seven wandering stars.
§ 9. On risings and settings.
§ 10. On the order, harmony, and

§ 11. On the order of the entire world.
§ 12. On circular and uniform motion, and on non-uniform motion.
§ 13. On the inequality of solar motion and on the hypotheses

§ 14. On the year and the restorations of the Sun’s longitude, latitude, and

§ 15. On the motions and the inequality of motion of the Moon and the wandering stars, and on the hypotheses pertaining to them.
§ 16. On the motions of the nodes and the apsides original: "apogeorum".
§ 17. On the various hypotheses of the ancient astronomers.
§ 18. The author’s universal hypothesis.
§ 19. The author’s hypothesis regarding Mercury and Venus.
§ 20. On the history of the hypotheses.
§ 21. On stations, retrogressions, and mean

§ 22. On occultations.
§ 23. On solar eclipses original: "defectibus".
§ 24. On lunar eclipses.
§ 25. On astronomical inventions and hypotheses,

§ 26. On the obliquity of the zodiac and the intervals of the

§ 27. On motions in spirals.
§ 28. On the fragment of Serenus.