From Wikipedia, the free encyclopedia
e Centauri
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]
Distance294 ± 5  ly
(90 ± 2  pc)
Absolute magnitude (MV)−0.45 [2]
Details
Radius30.62+1.48
−5.77
[4]  R
Luminosity277±13 [4]  L
Temperature4,258+468
−100
[4]  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. [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

  1. ^ 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
  2. ^ 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.
  3. ^ 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.
  4. ^ 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.
  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.
From Wikipedia, the free encyclopedia
e Centauri
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]
Distance294 ± 5  ly
(90 ± 2  pc)
Absolute magnitude (MV)−0.45 [2]
Details
Radius30.62+1.48
−5.77
[4]  R
Luminosity277±13 [4]  L
Temperature4,258+468
−100
[4]  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. [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

  1. ^ 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
  2. ^ 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.
  3. ^ 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.
  4. ^ 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.
  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.

Videos

Youtube | Vimeo | Bing

Websites

Google | Yahoo | Bing

Encyclopedia

Google | Yahoo | Bing

Facebook