Mu Crucis

Mu Crucis
Mu Crucis
Observation data
Epoch J2000      Equinox
Constellation Crux
μ1 Crucis
Right ascension 12h 54m 35.6249s[1]
Declination -57° 10′ 40.527″[1]
Apparent magnitude (V) 3.988[2]
μ2 Crucis
Right ascension 12h 54m 36.8865s[1]
Declination −57° 10′ 07.214″[1]
Apparent magnitude (V) 5.113[3]
Characteristics
Spectral type B2IV-V[2]/B5Vne[3]
U−B color index −0.75/−0.50[4]
B−V color index −0.17/−0.11[4]
Astrometry
Radial velocity (Rv) +13.9[5] km/s
Proper motion (μ) RA: −30.45[1] mas/yr
Dec.: −13.55[1] mas/yr
Parallax (π) 8.64 ± 0.58[1] mas
Distance 380 ± 30 ly
(116 ± 8 pc)
Radial velocity (Rv) +13[5] km/s
Proper motion (μ) RA: −32.35[1] mas/yr
Dec.: −10.93[1] mas/yr
Parallax (π) 9.03 ± 0.61[1] mas
Distance 360 ± 20 ly
(111 ± 7 pc)
Details
Rotational velocity (v sin i) −/124[6] km/s
Other designations
HR 4898, CD-56 4689, HD 112092/112091, SAO 240366/240367, HIP 63003/63005.[3]

Mu Crucis (μ Cru, μ Crucis) the 7th brightest star in the constellation Crux, or Southern Cross. It is a wide binary of spectral class B stars, each of magnitude 4.0 and 5.1. They lie about 360−380 light years away.

References

  1. ^ a b c d e f g h i j Perryman, M. A. C.; et al. (April 1997). "The HIPPARCOS Catalogue". Astronomy & Astrophysics 323: L49–L52. Bibcode 1997A&A...323L..49P. 
  2. ^ a b "HR 4898 -- Variable Star". SIMBAD. Centre de Données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HR+4898. Retrieved 2010-06-08. 
  3. ^ a b c "HIP 63005 -- Be Star". SIMBAD. Centre de Données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HIP+63005. Retrieved 2010-06-08. 
  4. ^ a b Johnson, H. L.; Iriarte, B.; Mitchell, R. I.; Wisniewskj, W. Z. (1966). "UBVRIJKL photometry of the bright stars". Communications of the Lunar and Planetary Laboratory 4 (99). Bibcode 1966CoLPL...4...99J. 
  5. ^ a b Evans, D. S. (June 20–24, 1966). "The Revision of the General Catalogue of Radial Velocities". In Batten, Alan Henry; Heard, John Frederick. Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30. University of Toronto: International Astronomical Union. http://adsabs.harvard.edu/abs/1967IAUS...30...57E. Retrieved 2009-09-10. 
  6. ^ Uesugi, Akira; Fukuda, Ichiro (1970). "Catalogue of rotational velocities of the stars". Contributions from the Institute of Astrophysics and Kwasan Observatory (University of Kyoto). Bibcode 1970crvs.book.....U. 
v · Crux
Bayer
α (Acrux) • β (Mimosa) • γ (Gacrux) • δ • ε • ζ • η • θ¹ • θ² • ι • κ • λ • μ
List
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