Wikipedia

X1 Centauri

For other stars with this Bayer designation, see x Centauri.
x1 Centauri
Observation data
Epoch J2000      Equinox J2000
Constellation Centaurus[1]
Right ascension 12h 23m 35.420s[2]
Declination −35° 24′ 45.64″[2]
Apparent magnitude (V) 5.32[1]
Characteristics
Spectral type B8/9V[3]
B−V color index −0.08[4]
Astrometry
Radial velocity (Rv)−10.00[5] km/s
Proper motion (μ) RA: −42.132 mas/yr[2]
Dec.: −6.896 mas/yr[2]
Parallax (π)7.3671±0.0953 mas[2]
Distance443 ± 6 ly
(136 ± 2 pc)
Absolute magnitude (MV)−0.2[6]
Details
Mass3[7] M☉
Radius3.6[8] R☉
Luminosity265[9] L☉
Temperature11,300[7] K
Age0.151[7] Gyr
Other designations
x1 Cen, CD−34°8117, GC 16892, HD 107832, HIP 60449, HR 4712, SAO 203420, G 113 G. Cen[9][10]
Database references
SIMBADdata

x1 Centauri is a star located in the constellation Centaurus. Its name is a Bayer designation; it is also known by its designations HD 107832 and HR 4712. The apparent magnitude of the star is about 5.32,[1] meaning it is only visible to the naked eye under excellent viewing conditions. Its distance is about 443 light-years (136 pc) from Earth based on parallax measurements.[2]

x1 Centauri's spectral type is B8/9V, meaning it is a late B-type main sequence star. These types of stars are a few times more massive than the Sun, and have effective temperatures of about 10,000 to 30,000 K. x1 Centauri is just over 3 times more massive than the Sun[7] and has a temperature of about 11,300 K.[7] The star x2 Centauri, which lies about 0.4′ away from x1 Centauri, may or may not form a physical binary star system with x1 Centauri, as the two have similar proper motions and distances.[10][11]

References

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  1. ^ a b c 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. ^ a b c d e 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. ^ Houk, Nancy (1979). Michigan catalogue of two-dimensional spectral types for the HD stars. Vol. 3. Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan. Bibcode:1982mcts.book.....H.
  4. ^ Johnson, H. L.; et al. (1966). "Ubvrijkl Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99–110. Bibcode:1966CoLPL...4...99J.
  5. ^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
  6. ^ Jaschek, C.; Gomez, A. E. (1998). "The absolute magnitude of the early type MK standards from HIPPARCOS parallaxes". Astronomy and Astrophysics. 330 (619–625): 619. Bibcode:1998A&A...330..619J.
  7. ^ a b c d e Grosbol, P. J. (1978). "Space velocities and ages of nearby early-type stars". Astronomy and Astrophysics Supplement Series. 32: 409–421. Bibcode:1978A&AS...32..409G.
  8. ^ Pasinetti Fracassini, L. E.; et al. (2001). "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Comments and statistics". Astronomy & Astrophysics. 367 (2) (Third ed.): 521–24. arXiv:astro-ph/0012289. Bibcode:2001A&A...367..521P. doi:10.1051/0004-6361:20000451. S2CID 425754.
  9. ^ a b de Vaucouleurs, A. (1957). "Spectral types and luminosities of B, A and F southern stars". Monthly Notices of the Royal Astronomical Society. 117 (4): 449. Bibcode:1957MNRAS.117..449D. doi:10.1093/mnras/117.4.449.
  10. ^ a b "* x1 Cen". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 15 January 2016.
  11. ^ "* x2 Cen". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 16 January 2017.