11. These parameters include the precession of the equinoxes , obliquity, and eccentricity as put forth by Milankovitch theory. 12. There is also usually a means of rotating to produce the effect of precession of the equinoxes . 13. Due to precession of the equinoxes , it will become the north pole star some time around 5200 CE. 14. Also, the precession of the equinoxes doesn't really have a " start " point from which we can measure. 15. It measures the 26, 000-year precession of the equinoxes , Hillis said, accounting precisely for elliptical eccentricities in the Earth's orbit. 16. Claims have been made that precession of the equinoxes was known in Ancient Egypt prior to the time of Hipparchus. 17. Precession of the equinoxes thus occurs at a rate of roughly 5 arc minutes of a degree every 6 years.18. He is considered the founder of trigonometry but is most famous for his incidental discovery of precession of the equinoxes . 19. As early as 1811, modern researchers were examining evidence for knowledge of precession of the equinoxes and astrological ages before Hipparchus. 20. Jack B . Oruch notes that precession of the equinoxes and the introduction of the more accurate Gregorian calendar only in 1582.
