Lambda Normae

λ Normae
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Norma
Right ascension 16h 19m 17.64661s[1]
Declination −42° 40′ 26.3014″[1]
Apparent magnitude (V) 5.44[1] (5.83 / 6.86)[2]
Characteristics
Spectral type A0V + A3V
Astrometry
Proper motion (μ) RA: 7.59[1] mas/yr
Dec.: -13.30[1] mas/yr
Parallax (π)9.35 ± 0.76[3] mas
Distance350 ± 30 ly
(107 ± 9 pc)
Absolute magnitude (MV)0.31[4]
Orbit[2]
Period (P)67.50 yr
Semi-major axis (a)0.293″
Eccentricity (e)0.788
Inclination (i)45.8°
Longitude of the node (Ω)215.2°
Periastron epoch (T)B 2049.59
Argument of periastron (ω)
(secondary)		82.5°
Details
Luminosity64[4] L☉
Other designations
λ Nor, CD−42° 11188, HD 146667, HIP 79963, HR 6071, SAO 226650
Database references
SIMBADdata

λ Normae, Latinised as Lambda Normae, is a star in the constellation Norma. It shines with a combined apparent magnitude of 5.44.[1] It is actually a binary system of two white main sequence stars of spectral types A0V and A3V that shine with apparent magnitudes of 5.9 and 6.6 or 5.83 and 6.86 depending on how they are measured.[5]

References

  1. 1 2 3 4 5 6 "* lam Nor". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 31 March 2015.
  2. 1 2 "Sixth Catalog of Orbits of Visual Binary Stars". United States Naval Observatory. Retrieved 16 May 2017.
  3. ↑ van Leeuwen, F. (2007). "Validation of the New Hipparcos Reduction". Astronomy and Astrophysics. 474 (2): 653–64. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
  4. 1 2 Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015.
  5. ↑ Malkov, O. Yu.; Tamazian, V. S.; Docobo, J. A.; Chulkov, D. A. (2012). "Dynamical masses of a selected sample of orbital binaries". Astronomy & Astrophysics. 546: 5. Bibcode:2012A&A...546A..69M. doi:10.1051/0004-6361/201219774. A69.


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