Calculating the Circumpolar Region Radius for Dallas, Texas

For stargazers in Dallas, Texas, understanding the circumpolar region—the area of sky where stars never set—is key to planning observations. The radius of this region in degrees is determined by a simple formula based on the observer's latitude.

The Formula

Circumpolar Radius (degrees) = 90° – Observer's Latitude

Applying It to Dallas

Dallas sits at approximately 32.78° North latitude.

Calculation: 90° – 32.78° = 57.22°

What This Means

Any star within 57.22 degrees of the North Celestial Pole (near Polaris) will remain above the horizon all night, every night of the year, for an observer in Dallas. This includes prominent constellations like Ursa Major, Ursa Minor, Cassiopeia, and Draco.