HD 110073

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This article is about l centauri. It is not to be confused with i Centauri or λ Centauri.
HD 110073
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Centaurus
Right ascension 12h 39m 52.52839s[1]
Declination −39° 59′ 14.2906″[1]
Apparent magnitude (V) +4.63
Spectral type B8II/III
U−B color index −0.42
B−V color index −0.08
Variable type none
Radial velocity (Rv) +15 km/s
Proper motion (μ) RA: −43.38[1] mas/yr
Dec.: −25.25[1] mas/yr
Parallax (π) 8.94 ± 0.24[1] mas
Distance 365 ± 10 ly
(112 ± 3 pc)
Absolute magnitude (MV) −0.71[2]
HD 110073 A
Mass 4.0 ± 0.2[2] M
Luminosity 385[2] L
Temperature 12,900[2] K
Age 129[2] Myr
HD 110073 B
Mass 1.13[2] M
Luminosity 1.2[2] L
Temperature 5,662[2] K
Other designations
l Cen, l Centauri, CD−39°7748, HD 110073, HIP 61789, HR 4817, SAO 203681.
Database references

HD 110073 (Bayer designation l Cen / l Centauri) is a star in the constellation Centaurus. It is a blue-white B-type bright giant with an apparent magnitude of +4.63 and is approximately 365 light years from Earth.

This is a single-lined spectroscopic binary star system that belongs to the Pleiades group.[2]


  1. ^ a b c d e van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752Freely accessible, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357 
  2. ^ a b c d e f g h i Hubrig, S.; et al. (June 2001), "Search for low-mass PMS companions around X-ray selected late B stars", Astronomy and Astrophysics, 372: 152–164, arXiv:astro-ph/0103201Freely accessible, Bibcode:2001A&A...372..152H, doi:10.1051/0004-6361:20010452