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 mas[1] |
| Distance | 190 ± 10 ly (59 ± 4 pc) |
| Absolute magnitude (MV) | +0.639 |
| Details | |
| Mass | 4 M☉ |
| Radius | 2.6 R☉ |
| Luminosity | 74 L☉ |
| Temperature | 10630 ± 400[3] K |
| Age | 225 mil years |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
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
- ^ 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.Vizier catalog entry
- ^ Jim Kaler (Dec 17, 2007). "Xi-2 Ceti".
- ^ 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:0903.5134. Bibcode:2009A&A...501..297Z. doi:10.1051/0004-6361/200811147.
- ^ Template:Zh icon AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 11 日
- http://server3.wikisky.org/starview?object_type=1&object_id=889
- http://www.alcyone.de/cgi-bin/search.pl?object=HR0718
