Q Centauri

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Q Centauri
Observation data
Epoch J2000.0       Equinox J2000.0
Constellation Centaurus [1]
A
Right ascension 13h 41m 44.770s [2]
Declination −54° 33′ 33.93″ [2]
Apparent magnitude  (V)+5.22 [3]
B
Right ascension 13h 41m 44.956s [4]
Declination −54° 33′ 39.21″ [4]
Apparent magnitude  (V)+6.52 [3]
Characteristics
Spectral type B8Vn + A0V [5]
U−B color index −0.23[ citation needed ]
B−V color index −0.05[ citation needed ]
Astrometry
A
Radial velocity (Rv)+14.49±0.74 [2] km/s
Proper motion (μ)RA: −43.783 [2] mas/yr
Dec.: −24.935 [2] mas/yr
Parallax (π)11.2810±0.0956  mas [2]
Distance 289 ± 2  ly
(88.6 ± 0.8  pc)
B
Proper motion (μ)RA: −43.783 [4] mas/yr
Dec.: −24.935 [4] mas/yr
Parallax (π)11.3203±0.0329  mas [4]
Distance 288.1 ± 0.8  ly
(88.3 ± 0.3  pc)
Details
A
Mass 2.8 [6]   M☉
Radius 2.4 [6]   R☉
Luminosity 70 [6]   L☉
Surface gravity (log g)4.12 [6]   cgs
Temperature 10,740 [6]   K
B
Mass 2.3 [6]   M☉
Radius 1.6 [6]   R☉
Luminosity16 [6]   L☉
Surface gravity (log g)4.37 [6]   cgs
Temperature 9,016 [6]   K
Other designations
HR  5141, HD  118991, CP−53°5725, HIP  66821, SAO  241076, GC 18495, CCDM J13417-5434
Database references
SIMBAD data
A
B

Q Centauri (Q Cen) is a binary star in the constellation Centaurus. It has a combined apparent magnitude of +4.99 [1] and is approximately 288 light years from Earth. [2] [4]

The primary component, Q Centauri A, is a blue-white B-type main sequence dwarf with an apparent magnitude of +5.2. Its companion, Q Centauri B, is a white A-type main sequence dwarf with an apparent magnitude of +6.5. The two stars are separated by 5.6 arcseconds on the sky. [7]

References

  1. 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. XHIP record for this object at VizieR.
  2. 1 2 3 4 5 6 7 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211 . Bibcode:2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940 . S2CID   244398875. Gaia DR3 record for this source at VizieR.
  3. 1 2 Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355. Bibcode:2000A&A...355L..27H.
  4. 1 2 3 4 5 6 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211 . Bibcode:2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940 . S2CID   244398875. Gaia DR3 record for this source at VizieR.
  5. ↑ Gray, R. O.; Garrison, R. F. (1987). "The Early A-Type Stars: Refined MK Classification, Confrontation with Stroemgren Photometry, and the Effects of Rotation". The Astrophysical Journal Supplement Series. 65: 581. Bibcode:1987ApJS...65..581G. doi:10.1086/191237.
  6. 1 2 3 4 5 6 7 8 9 10 Stassun, Keivan G.; et al. (2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv: 1905.10694 . Bibcode:2019AJ....158..138S. doi: 10.3847/1538-3881/ab3467 .
  7. ↑ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal. 122 (6): 3466. Bibcode:2001AJ....122.3466M. doi:10.1086/323920.


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