Megrez
Designations
- Bayer: δ UMa
- Flamsteed: 69 UMa
- Hipparchos: HIP 59774
Data
- Constellation: Ursa Major
- Apparent Magnitude: 3.32
- Right Ascension (J2000): 12h15m24.61s
- Declination (J2000): +57°02'14".2
- Colour Index (B-V): 0.09
- Distance: 80.89±0.38ly
Nomenclature
Megrez
The scientific Arabic name for the star was Maġriz Ḏanab al-Dubb al-Akbar, 'the root of the tail of the great bear', referring to its position within the figure. The name was abbreviated to Megrez and applied as as a star name in modern times.
Kaffa
The name is of unknown etmology, first attested in Antonín Bečvář's Atlas Coeli Skalnaté Pleso.