Electra (star)

Electra
Image of the Pleiades star cluster
Electra in the Pleiades cluster (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Taurus
Right ascension 03h 44m 52.53688s[1]
Declination +24° 06′ 48.0112″[1]
Apparent magnitude (V) 3.70[2]
Characteristics
Spectral type B6 IIIe[3]
U−B color index -0.40[4]
B−V color index -0.12[4]
Astrometry
Radial velocity (Rv)+10.9[5] km/s
Proper motion (μ) RA: +20.84[1] mas/yr
Dec.: −46.06[1] mas/yr
Parallax (π)8.06 ± 0.25 mas[1]
Distance400 ± 10 ly
(124 ± 4 pc)
Absolute magnitude (MV)−1.77[6]
Details
Mass4.6-4.7[7] M☉
Radius6.06+0.14
−0.15[8] R☉
Luminosity940[8] L☉
Surface gravity (log g)3.412±0.047[9] cgs
Temperature13,484±293[9] K
Rotational velocity (v sin i)181[9] km/s
Age115[10] Myr
Other designations
17 Tauri, BD+23 507, FK5 136, GC 4477, HD 23302, HIP 17499, HR 1142, SAO 76131, NSV 15755
Database references
SIMBADdata

Electra /əˈlɛktrə/,[11] designated 17 Tauri, is a blue-white giant star in the constellation of Taurus located approximately 400 light years away. It is the third-brightest star in the Pleiades open star cluster (M45), visible to the naked eye with an apparent magnitude of 3.7. Like the other bright stars of the Pleiades, it is named for one of the Seven Sisters of Greek mythology.

  1. ^ a b c d e 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.
  2. ^ Ducati, J. R (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D.
  3. ^ Cite error: The named reference apj339 was invoked but never defined (see the help page).
  4. ^ a b Johnson, H. L.; Iriarte, B.; Mitchell, R. I.; Wisniewskj, W. Z. (1966). "UBVRIJKL photometry of the bright stars". Communications of the Lunar and Planetary Laboratory. 4: 99–110. Bibcode:1966CoLPL...4...99J.
  5. ^ Pearce, J. A.; Hill, G. (1975). "A spectroscopic investigation of the Pleiades". Publications of the Dominion Astrophysical Observatory. 14 (14): 319–343. Bibcode:1975PDAO...14..319P.
  6. ^ Zhang, P; Liu, C. Q; Chen, P. S (2006). "Absolute Magnitudes of Be Stars Based on Hipparcos Parallaxes". Astrophysics and Space Science. 306 (3): 113. Bibcode:2006Ap&SS.306..113Z. doi:10.1007/s10509-006-9173-1. S2CID 122897957.
  7. ^ Cite error: The named reference zorec was invoked but never defined (see the help page).
  8. ^ a b Harmanec, P (2000). "Physical Properties and Evolutionary Stage of Be Stars". The be Phenomenon in Early-Type Stars. 214: 13. Bibcode:2000ASPC..214...13H.
  9. ^ a b c Frémat, Y.; Zorec, J.; Hubert, A.-M.; Floquet, M. (September 2005). "Effects of gravitational darkening on the determination of fundamental parameters in fast-rotating B-type stars". Astronomy and Astrophysics. 440 (1): 305–320. arXiv:astro-ph/0503381. Bibcode:2005A&A...440..305F. doi:10.1051/0004-6361:20042229. S2CID 19016751.
  10. ^ Basri, Gibor; Marcy, Geoffrey W.; Graham, James R. (1996). "Lithium in Brown Dwarf Candidates: The Mass and Age of the Faintest Pleiades Stars". The Astrophysical Journal. 458: 600–609. Bibcode:1996ApJ...458..600B. doi:10.1086/176842.
  11. ^ "Electra". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)