24 Ursae Majoris

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24 Ursae Majoris
Observation data
Epoch J2000      Equinox J2000
Constellation Ursa Major
Right ascension 09h 34m 28.85999s [1]
Declination +69° 49′ 49.2312″ [1]
Spectral type G4III-IV [1]
Absolute magnitude (MV)2.16±0.013[2]
Mass1.9[3] M
Radius4.6[3] R
Luminosity14.9[3] L
Surface gravity (log g)3.44[2] cgs
Temperature5,335[2] K
Metallicity [Fe/H]−0.19[2] dex
Rotation10 d[3]
Other designations
DK UMa, d UMa, BD+70° 565, HD 82210, HIP 46977, HR 3771, SAO 6897
Database references

24 Ursae Majoris (24 UMa) is a star in the constellation Ursa Major. Its apparent magnitude is 4.57.


  1. ^ a b c SIMBAD, DK Ursae Majoris (accessed 23 February 2013)
  2. ^ a b c d Park, Sunkyung; et al. (2013), "Wilson-Bappu Effect: Extended to Surface Gravity", The Astronomical Journal, 146 (4): 73, arXiv:1307.0592Freely accessible, Bibcode:2013AJ....146...73P, doi:10.1088/0004-6256/146/4/73. 
  3. ^ a b c d Gondoin, P. (December 2005), "The relation between X-ray activity and rotation in intermediate-mass G giants", Astronomy and Astrophysics, 444 (2): 531–538, Bibcode:2005A&A...444..531G, doi:10.1051/0004-6361:20053567.