Xi2 Ceti

Xi2 Ceti
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Cetus
Right ascension 02h 28m 09.543s[1]
Declination +08° 27′ 36.20″[1]
Apparent magnitude (V) +4.28
Characteristics
Spectral type B9III [2]
Astrometry
Proper motion (μ) RA: 41.80 ± 1.42[1] mas/yr
Dec.: –13.55 ± 0.91[1] mas/yr
Parallax (π)16.89 ± 1.21[1] mas
Distance190 ± 10 ly
(59 ± 4 pc)
Absolute magnitude (MV)+0.639[2]
Details
Mass4[2] M☉
Radius2.6[2] R☉
Luminosity74[2] L☉
Temperature10630 ± 400[3] K
Age225 Million[2] years
Other designations
73 Ceti, HD 15318, HR 718 , HIP 11484
Database references
SIMBADdata
Exoplanet Archivedata

Xi2 Ceti (ξ2 Ceti) is a star located in the constellation Cetus.

In Chinese, 天囷 (Tiān Qūn), meaning Circular Celestial Granary, refers to an asterism consisting of α Ceti, κ1 Ceti, λ Ceti, μ Ceti, ξ1 Ceti, ξ2 Ceti, ν Ceti, γ Ceti, δ Ceti, 75 Ceti, 70 Ceti, 63 Ceti and 66 Ceti. Consequently, Xi2 Ceti itself is known as the Sixth Star of Circular Celestial Granary, Tiān Qūn Liù.[4]

References

  1. 1 2 3 4 5 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752Freely accessible. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.Vizier catalog entry
  2. 1 2 3 4 5 6 Jim Kaler (Dec 17, 2007). "Xi-2 Ceti".
  3. ↑ Zorec, J.; et al. (2009). "Fundamental parameters of B supergiants from the BCD system. I. Calibration of the (λ_1, D) parameters into Teff". Astronomy and Astrophysics. 501 (1): 297–320. arXiv:0903.5134Freely accessible. Bibcode:2009A&A...501..297Z. doi:10.1051/0004-6361/200811147.
  4. ↑ (Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 11 日
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