| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 12h 53m 06.91s[1] |
| Declination | −48° 56′ 35.9″[1] |
| Apparent magnitude (V) | +4.33[2] |
| Characteristics | |
| Spectral type | K3-4III[3] |
| U−B color index | +1.58 |
| B−V color index | +1.344±0.068[2] |
| Astrometry | |
| Radial velocity (Rv) | −2.4±1.6[2] km/s |
| Proper motion (μ) | RA: -79.19 ± 0.15[1] mas/yr Dec.: -24.26 ± 0.13[1] mas/yr |
| Parallax (π) | 11.08 ± 0.19 mas[1] |
| Distance | 294 ± 5 ly (90 ± 2 pc) |
| Absolute magnitude (MV) | −0.45[2] |
| Details | |
| Radius | 30.62+1.48 −5.77[4] R☉ |
| Luminosity | 277±13[4] L☉ |
| Temperature | 4,258+468 −100[4] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 111915 is a single[6] star in the southern constellation of Centaurus. It has the Bayer designation e Centauri, while HD 111915 is the star's identifier in the Henry Draper Catalogue. This is an aging giant star with a stellar classification of K3-4III.[3] It is faintly visible to the naked eye with an apparent visual magnitude of +4.33.[2] The distance to this star is approximately 294 light years based on parallax.[1]
References
- ^ a b c d e f van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600. Vizier catalog entry
- ^ a b c d e 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. S2CID 119257644.
- ^ a b Houk, N. (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 2, Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H.
- ^ a b c Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ "e Cen". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-01-28.
- ^ Eggleton, P. P.; Tokovinin, A. A. (September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869–879. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x. S2CID 14878976.
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This page was last edited on 14 May 2023, at 13:05