View Full Version : Chart showing which north polar star was 'in position' over the past precession

2011-Nov-05, 05:29 PM
Does anyone know where there is such a chart? It would show when Polaris is the north star and when other stars take that place?


2011-Nov-05, 05:50 PM
Try Wikipedia? There is a map on the page on axial precession

Robert Tulip
2011-Nov-06, 03:12 AM
http://en.wikipedia.org/wiki/Pole_star#Northern_pole_star_.28North_Star.29 gives a picture and precise dates. Polaris will reach its closest approach to the pole in 2102 AD. There is then no next pole star until the pole reaches Cepheus in about 4000 AD. The last pole star was Alpha Draconis (Thuban (http://en.wikipedia.org/wiki/Thuban)), which was closest in 2787 BC.