Nu2 Columbae

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Nu2 Columbae
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Columba
Right ascension 05h 37m 44.6178s
Declination −28° 41′ 22.886″
Apparent magnitude (V) 5.31
Absolute magnitude (V) 2.21[1]
Distance 138.56 ly
(42.48 pc)
Spectral type F4 V
Other designations
HD 37495, HIP 26460, HR 1935, IRAS 05357-2843, SAO 170613

Nu2 Columbae is a yellow-white dwarf star in the constellation Columba.

This star has 1.62 times the mass of the Sun, with a projected rotational velocity of 31.0 km s−1.[1] X-ray emission has been detected from this star, with an estimated luminosity of 1.6 × 1029 erg s−1.[2]


  1. ^ a b Pizzolato, N.; Maggio, A.; Sciortino, S. (September 2000), "Evolution of X-ray activity of 1-3 Msun late-type stars in early post-main-sequence phases", Astronomy and Astrophysics 361: 614–628, Bibcode:2000A&A...361..614P 
  2. ^ Micela, G.; Favata, F.; Sciortino, S. (October 1997), "HIPPARCOS distances of X-ray selected stars: implications on their nature as stellar population", Astronomy and Astrophysics 326: 221–227, Bibcode:1997A&A...326..221M 

External links[edit]

  1. SIMBAD Query Result