Theta Ursae Minoris

Theta Ursae Minoris


Merak in Ursa Major.

Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Ursa Minor
Right ascension 15h 31m 24.9s[1]
Declination +77° 20' 58"[1]
Apparent magnitude (V) +5.00[1]
Spectral typeK5III[1]
Other designations
15 Ursae Minoris, HR 5826, HD 139669, BD+77 592, FK5 3229, HIP 76008, SAO 8274.

Theta Ursae Minoris (θ UMi, θ Ursae Minoris) is a star in the constellation Ursa Minor. It is an orange giant of spectral type K5III with an apparent magnitude of +5.00. It is approximately 855 light years from Earth.[1] Its diameter has been estimated as around 4.8 times that of the Sun.[2]

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 SIMBAD, Theta Ursae Minoris (accessed 16 June 2014)
  2. ↑ Pasinetti Fracassini, L. E.; Pastori, L.; Covino, S.; Pozzi, A. (February 2001). "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics". Astronomy and Astrophysics 367: 521–24. arXiv:astro-ph/0012289. Bibcode:2001A&A...367..521P. doi:10.1051/0004-6361:20000451.