δ UMa. Magnitude 3.31, white. Visible to the naked eye from a reasonably dark site.
Astronomers call it δ UMa — the Bayer designation, which reads as a Greek letter ranking its brightness within its constellation. Megrez is the name people actually use.
Megrez shines at magnitude 3.31, making it visible to the naked eye from a reasonably dark site. Its B−V colour index of 0.08 makes it white to the eye, corresponding to a surface temperature of around 8,000 K.
It sits at right ascension 12.26 hours and declination +57.0°. It sits well north on the sky and is comfortably placed for northern hemisphere observers.
SkyRef shows exactly where Megrez is from your location right now — altitude, compass direction, and rise and set times.