(FEK-da )

Gamma Ursae Majoris


Distance (Light Years) 83.7 ± 1.5
Apparent Magnitude 2.41
Color (B-V)0

Names For This Star

Other names for this star are Phad, Phekda, Phegda, Phekha, or Phacd. These names derive from the Arabic term Al Falidh meaning "The Thigh (of the Bear)".

Description of the Star

Phecda is a hot, white A0Ve main sequence star about 60 times as luminous as the sun. The spectral type implies a temperature of 9900 K, a mass of about 3 solar masses, and a diameter about 2.5 times that of the sun.

The Ursa Major Cluster

According to Burnham, Phecda is part of a star cluster including at least 16 other stars from the Ursa Major area of the sky, as well as Alioth, Merak, Alcor, Mizar, and Megrez in the Big Dipper. The Ursa Major cluster represents an ellipsoidal volume of space about 30 ly long by 18 ly in width.

Other Designations For This Star


64 Ursae Majoris

Hipparcos Identifier (HIP Number)


Harvard Revised (HR Number)


Henry Draper Catalog (HD Number)


Bonner Durchmusterung (BD Number)

BD+54 1475
Smithsonian Astrophysical
Observatory compendium (SAO Number)

Fundamental Katalog (FK5 Number)



Copyright © 1998 - 2010 by Arnold V. Lesikar,
Professor Emeritus
Dept. of Physics, Astronomy, and Engineering Science,
St. Cloud State University,St. Cloud, MN 56301-4498

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