When to Use Precession of the Equinoxes 3D Explorer - Best Sessions and Limits
Open the Precession of the Equinoxes 3D Explorer when you need Earth's axial precession cone across kyr - obliquity about 23.44 deg, period about 25,772 yr, rough rate about 1 deg per 72 yr - with Polaris now and Vega near the pole around 14,000 CE as teaching markers, without an ephemeris or star catalog.
A five-minute classroom demo
A five-minute classroom demo starts when you open Precession of the Equinoxes 3D Explorer, press Jump Polaris then Jump Vega, and scrub kyr so the celestial pole path ring moves - clearer than saying "north stars change" alone.
Period and rate in one panel
Period and rate literacy in Precession of the Equinoxes 3D Explorer stays readable when you keep the Facts table open for about 25,772 yr and about 1 deg per 72 yr while Play kyr sweeps the cone. Markers are order-of-magnitude teaching positions, not Hipparcos or Gaia placements.
Sessions Precession of the Equinoxes 3D Explorer does not fit
Sessions Precession of the Equinoxes 3D Explorer does not fit are precise equinox epoch solutions, nutation, planetary perturbations, or catalog star positions. Use Seasons on Earth 3D for seasonal tilt or Ecliptic Zodiac 3D Explorer for ecliptic literacy instead. Walk the controls in the Precession of the Equinoxes 3D Explorer step-by-step guide.