Astronomy:X1 Centauri
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| 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[2] mas/yr Dec.: −6.896[2] mas/yr |
| Parallax (π) | 7.3671 ± 0.0953[2] mas |
| Distance | 443 ± 6 ly (136 ± 2 pc) |
| Absolute magnitude (MV) | −0.2[6] |
| Details | |
| Mass | 3[7] M☉ |
| Radius | 3.6[8] R☉ |
| Luminosity | 265[9] L☉ |
| Temperature | 11,300[7] K |
| Age | 0.151[7] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
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
- ↑ 1.0 1.1 1.2 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A XHIP record for this object at VizieR.
- ↑ 2.0 2.1 2.2 2.3 2.4 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940. Gaia DR3 record for this source at VizieR.
- ↑ Houk, Nancy (1979). Michigan catalogue of two-dimensional spectral types for the HD stars. 3. Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan. Bibcode: 1982mcts.book.....H.
- ↑ 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.
- ↑ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters 32 (11): 759–771. doi:10.1134/S1063773706110065. Bibcode: 2006AstL...32..759G.
- ↑ 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.
- ↑ 7.0 7.1 7.2 7.3 7.4 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.
- ↑ Pasinetti Fracassini, L. E. et al. (2001). "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Comments and statistics". Astronomy & Astrophysics 367 (2): 521–24. doi:10.1051/0004-6361:20000451. Bibcode: 2001A&A...367..521P.
- ↑ 9.0 9.1 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. doi:10.1093/mnras/117.4.449. Bibcode: 1957MNRAS.117..449D.
- ↑ 10.0 10.1 "* x1 Cen". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=%2A+x1+Cen.
- ↑ "* x2 Cen". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=%2A+x2+Cen.
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