Elektra (star)

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Star
Elektra (17 Tauri)
Pleiades: Elektra on the right
Pleiades: Elektra on the right
AladinLite
Observation
dates equinoxJ2000.0 , epoch : J2000.0
Constellation bull
Right ascension 03 h 44 m 52.54 s
declination + 24 ° 06 ′ 48.1 ″
Apparent brightness 3.70 mag
Typing
B − V color index (–0.11) 
U − B color index (−0.40) 
R − I index (−0.09) 
Spectral class B6 IIIe
Variable star type SPB 
Astrometry
Radial velocity (6.7 ± 1.4) km / s
parallax (8.06 ± 0.25)  mas
distance (405 ± 15)  ly
(125)  pc
Proper movement 
Rec. Share: (20.8 ± 0.3)  mas / a
Dec. portion: (-46.1 ± 0.2)  mas / a
Physical Properties
Dimensions (4.65 ± 0.05)  M
radius (6.3 ± 0.7)  R
Effective temperature (12750 ± 500)  K.
Other names
and catalog entries
Flamsteed name 17 Tauri
Bonn survey BD + 23 ° 507
Bright Star Catalog HR 1142 [1]
Henry Draper Catalog HD 23302 [2]
Hipparcos catalog HIP 17499 [3]
SAO catalog SAO 76131 [4]
Tycho catalog TYC 1799-1441-1 [5]
2MASS catalog 2MASS J03445253 + 2406478 [6]
Other names FK5 136

Elektra is the proper name of the star 17 Tauri in the Pleiades .

Like all stars of the Pleiades, Elektra can occasionally be covered by the moon and (very rarely!) Also by planets . The last occultation of Electra by a planet was on May 9, 1841 by Venus .

Elektra has an apparent magnitude of +3.70 mag and belongs to the spectral class B6 IIIe. The star is a roughly 400 light-years from the sun distant Be star and also one of the slowly pulsating B stars .

Web links

Commons : Elektra  - collection of images, videos and audio files

Individual evidence

  1. a b c d e f g h i 17 Tau. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed January 27, 2019 .
  2. a b NSV 15755. In: VSX. AAVSO, accessed July 21, 2018 .
  3. J. Zorec, Y. Fremat, L. Cidale: On the evolutionary status of Be stars. I. Field Be stars near the Sun . In: Astronomy and Astrophysics . 441, 2005, p. 235. arxiv : astro-ph / 0509119 . bibcode : 2005A & A ... 441..235Z . doi : 10.1051 / 0004-6361: 20053051 .
  4. a b TR White, BJS Pope, V. Antoci, PI Pápics, C. Aerts, DR Gies, K. Gordon, D. Huber, GH Schaefer, S. Aigrain, S. Albrecht, T. Barclay, G. Barentsen, PG Beck, TR Bedding, M. Fredslund Andersen, F. Grundahl, SB Howell, MJ Ireland, SJ Murphy, MB Nielsen, V. Silva Aguirre, PG Tuthill: Beyond the Kepler / K2 bright limit: Variability in the seven brightest members of the Pleiades . In: Monthly Notices of the Royal Astronomical Society . 471, No. 3, 2017, pp. 2882–2901. arxiv : 1708.07462 . bibcode : 2017MNRAS.471.2882W . doi : 10.1093 / mnras / stx1050 .