X1 Centauri
| Observation data Epoch J2000 Equinox ICRS | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 12h 23m 35.420s |
| Declination | −35° 24′ 45.64″ |
| Apparent magnitude (V) | 5.32 |
| Characteristics | |
| Spectral type | B8/9V |
| B−V color index | −0.08 |
| Astrometry | |
| Radial velocity (Rv) | −10.00 km/s |
| Proper motion (μ) | RA: −42.132 mas/yr Dec.: −6.896 mas/yr |
| Parallax (π) | 7.3671±0.0953 mas |
| Distance | 443 ± 6 ly (136 ± 2 pc) |
| Absolute magnitude (MV) | −0.2 |
| Details | |
| Mass | 3 M☉ |
| Radius | 3.6 R☉ |
| Luminosity | 265 L☉ |
| Temperature | 11,300 K |
| Age | 0.151 Gyr |
| Other designations | |
| x1 Cen, CD−34°8117, GC 16892, HD 107832, HIP 60449, HR 4712, SAO 203420, G 113 G. Cen | |
| 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, 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.
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 and has a temperature of about 11,300 K. 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.
References
- 1 2 3 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.
- 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.
- ↑ 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.
- ↑ 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. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
- ↑ 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.
- 1 2 3 4 5 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) (Third ed.): 521–24. arXiv:astro-ph/0012289. Bibcode:2001A&A...367..521P. doi:10.1051/0004-6361:20000451. S2CID 425754.
- 1 2 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.
- 1 2 "* x1 Cen". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 15 January 2016.
- ↑ "* x2 Cen". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 16 January 2017.
