Zeta Phoenicis

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Zeta Phoenicis
Observation data
Epoch J2000      Equinox J2000
Constellation Phoenix
Right ascension 01h 08m 23.08s[1]
Declination –55° 14′ 44.7″[1]
Apparent magnitude (V) 3.9 to 4.4
Characteristics
Spectral type B6 V + B9 V
B−V color index –0.12
Variable type Algol
Astrometry
Radial velocity (Rv) +15.4 km/s
Proper motion (μ) RA: 20.87 ± 0.36[1] mas/yr
Dec.: 30.64 ± 0.38[1] mas/yr
Parallax (π) 10.92 ± 0.39[1] mas
Distance 300 ± 10 ly
(92 ± 3 pc)
Absolute magnitude (MV) -0.37/0.90[2]
Details
Mass 3.92/2.55[2] M
Radius 2.85/1.85[2] R
Luminosity 316/65[2] L
Surface gravity (log g) 4.12/4.31[2] cgs
Temperature 14,400/12,000[2] K
Other designations
HR 338, CD -55°267, CP(D)-55 241, HD 6882, SAO 232306, HIP 5348.

Zeta Phoenicis (ζ Phe, ζ Phoenicis) is a 280 light-year distant star in the constellation Phoenix. It is an Algol-type eclipsing binary star and its apparent magnitude fluctuates between 3.9 and 4.4 with a period of 1.66977 days. Zeta Phoenicis is most likely a four-star system: it has two other telescopic components with an apparent magnitude of 7.2 and 8.2 at an angular separation of 0.8 and 6.4 arcseconds from the main pair.[3]

References[edit]

  1. ^ a b c d e van Leeuwen, F. (2007). "HIP 5348". Hipparcos, the New Reduction. Retrieved 2009-12-14. 
  2. ^ a b c d e f Torres, G.; Andersen, J.; Giménez, A. (February 2010). "Accurate masses and radii of normal stars: modern results and applications". The Astronomy and Astrophysics Review 18 (1–2): 67–126. arXiv:0908.2624. Bibcode:2010A&ARv..18...67T. doi:10.1007/s00159-009-0025-1. 
  3. ^ Clausen, J. V.; Gyldenkerne, K.; Grønbech, B. (January 1976). "Four-color photometry of eclipsing binaries. IIIb: Zeta Phoenicis, analysis of light curves and determination of absolute dimensions". Astronomy and Astrophysics 46: 205–212. Bibcode:1976A&A....46..205C. 
  • Der Brockhaus. Astronomie. 2006, p. 334.