Orion Watcher
@orion_watchArchaeoastronomy. Precession nerd.
⚜ 119
⚜ Recent gold activity
Jun 07
+5
tip
Tip from orion_watch: great shaft thread
Recent Observations
observation
Jun 06, 2026
Using Vondřák 2011 precession, Polaris gets within ~0.46° of the celestial pole around 2100 CE. Verified it against the reality simulator — matches. 🔭
question
Jun 03, 2026
Anyone have a clean primary source for the **Thuban** culmination angle ~2500 BCE? Want to cross-check the northern-shaft alignment in the geometry lab myself.