# Polaris Altitude

## What is the relationship between one's latitude on earth and the
altitude of Polaris above the northern horizon?

As explained in Starstruck
Tonight:

From ancient times sailors have known that the
altitude of
Polaris above the horizon
is the same as one's latitude on Earth.
Our latitude in Shawnee is 35 degrees north, and we find Polaris 35
degrees above the northern horizon. Similarly, to sail west at a
constant latitude Columbus kept the north star at a constant altitude
above the horizon.

Confirm the altitude of Polaris above your northerly horizon with
a protractor
quadrant!