HD 111915

Last updated
e Centauri
Observation data
Epoch J2000.0       Equinox J2000.0
Constellation Centaurus [1]
Right ascension 12h 53m 06.91s [2]
Declination −48° 56′ 35.9″ [2]
Apparent magnitude  (V)+4.33 [1]
Characteristics
Evolutionary stage red giant branch [3]
Spectral type K3-4III [4]
U−B color index +1.58
B−V color index +1.344±0.068 [1]
Astrometry
Radial velocity (Rv)−2.4±1.6 [1] km/s
Proper motion (μ)RA: −79.19±0.15 [2] mas/yr
Dec.: −24.26±0.13 [2] mas/yr
Parallax (π)11.08±0.19  mas [2]
Distance 294 ± 5  ly
(90 ± 2  pc)
Absolute magnitude  (MV)−0.45 [1]
Details
Mass 4.0 [3]   M☉
Radius 30 [3]   R☉
Luminosity 343 [3]   L☉
Surface gravity (log g)1.99 [3]   cgs
Temperature 4,526 [3]   K
Other designations
e Cen, CD−48°7753, FK5 3024, GC 17473, HD 111915, HIP 62867, HR 4888, SAO 223731 [5]
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. [4] It is faintly visible to the naked eye with an apparent visual magnitude of +4.33. [1] The distance to this star is approximately 294  light years based on parallax. [2]

References

  1. 1 2 3 4 5 6 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 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
  3. 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.
  4. 1 2 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.
  5. ↑ "e Cen". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2021-01-28.
  6. ↑ 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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