Q Centauri

Q Centauri
Observation data
Epoch J2000.0      Equinox ICRS
Constellation Centaurus
A
Right ascension 13h 41m 44.770s
Declination −54° 33′ 33.93″
Apparent magnitude (V) +5.22
B
Right ascension 13h 41m 44.956s
Declination −54° 33′ 39.21″
Apparent magnitude (V) +6.52
Characteristics
Spectral type B8Vn + A0V
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 km/s
Proper motion (μ) RA: −43.783 mas/yr
Dec.: −24.935 mas/yr
Parallax (π)11.2810±0.0956 mas
Distance289 ± 2 ly
(88.6 ± 0.8 pc)
B
Proper motion (μ) RA: −43.783 mas/yr
Dec.: −24.935 mas/yr
Parallax (π)11.3203±0.0329 mas
Distance288.1 ± 0.8 ly
(88.3 ± 0.3 pc)
Details
A
Mass2.8 M☉
Radius2.4 R☉
Luminosity70 L☉
Surface gravity (log g)4.12 cgs
Temperature10,740 K
B
Mass2.3 M☉
Radius1.6 R☉
Luminosity16 L☉
Surface gravity (log g)4.37 cgs
Temperature9,016 K
Other designations
HR 5141, HD 118991, CP−53°5725, HIP 66821, SAO 241076, GC 18495, CCDM J13417-5434
Database references
SIMBADdata
A
B

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

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.

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.