2 Ceti

2 Ceti
Observation data
Epoch J2000      Equinox J2000
Constellation Cetus
Right ascension 00h 03m 44.38784s[1]
Declination −17° 20′ 09.5719″[1]
Apparent magnitude (V) 4.483[2]
Characteristics
Spectral type B9IVn[3]
U−B color index -0.12[4]
B−V color index -0.05[4]
Astrometry
Radial velocity (Rv)8.0 ± 4.6[5] km/s
Proper motion (μ) RA: 25.17[1] mas/yr
Dec.: -9.16[1] mas/yr
Parallax (π)11.98 ± 0.26[1] mas
Distance272 ± 6 ly
(83 ± 2 pc)
Details
Mass2.68 ± 0.11[6] M☉
Radius2.75[6] R☉
Surface gravity (log g)3.99 ± 0.09[6] cgs
Temperature10797 ± 449[3] K
Metallicity [Fe/H]0.00 ± 0.24[3] dex
Rotational velocity (v sin i)237[7] km/s
Other designations
BD−18° 6417, FK5 905, HD 225132, HIP 301, HR 9098, SAO 147059
Database references
SIMBADdata

2 Ceti (2 Cet) is a star in the constellation Cetus. Its apparent magnitude is 4.483.[2]

References

  1. 1 2 3 4 5 van Leeuwen, F.; et al. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. Bibcode:2007A&A...474..653V. arXiv:0708.1752 Freely accessible. doi:10.1051/0004-6361:20078357.
  2. 1 2 Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H.
  3. 1 2 3 Wu, Yue; Singh, H. P.; Prugniel, P.; Gupta, R.; Koleva, M. (2010). "Coudé-feed stellar spectral library – atmospheric parameters". Astronomy & Astrophysics. 525: A71. Bibcode:2011A&A...525A..71W. arXiv:1009.1491 Freely accessible. doi:10.1051/0004-6361/201015014.
  4. 1 2 Nicolet, B. (1964). "Catalogue of homogeneous data in the UBV photoelectric photometric system". Astronomy and Astrophysics, Supplement Series. 34: 1–49. Bibcode:1978A&AS...34....1N.
  5. ↑ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. Bibcode:2006AstL...32..759G. arXiv:1606.08053 Freely accessible. doi:10.1134/S1063773706110065.
  6. 1 2 3 Allende Prieto, C.; Lambert, D. L. (1999). "Fundamental parameters of nearby stars from the comparison with evolutionary calculations: masses, radii and effective temperatures". Astronomy and Astrophysics. 352: 555–562. Bibcode:1999A&A...352..555A. arXiv:astro-ph/9911002 Freely accessible.
  7. ↑ Royer, F.; Zorec, J.; Gómez, A. E. (2007). "Rotational velocities of A-type stars". Astronomy and Astrophysics. 463 (2): 671. Bibcode:2007A&A...463..671R. arXiv:astro-ph/0610785 Freely accessible. doi:10.1051/0004-6361:20065224.


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