Astronomy:Phi3 Ceti

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Short description: Star in the constellation Cetus


Phi3 Ceti
Observation data
Equinox J2000.0]] (ICRS)
Constellation Cetus
Right ascension  00h 56m 01.48867s[1]
Declination −11° 15′ 59.4988″[1]
Apparent magnitude (V) 5.31[2]
Characteristics
Spectral type K5 III[3]
B−V color index +1.52[2]
Astrometry
Radial velocity (Rv)−25.48±0.38[1] km/s
Proper motion (μ) RA: −26.909[1] mas/yr
Dec.: −7.174[1] mas/yr
Parallax (π)6.1068 ± 0.2570[1] mas
Distance530 ± 20 ly
(164 ± 7 pc)
Absolute magnitude (MV)−0.78[4]
Details
Mass1.4[5] M
Radius44.33+0.76
−2.94
[1] R
Luminosity441±21[1] L
Surface gravity (log g)1.67[6] cgs
Temperature3,974+139
−34
[1] K
Metallicity [Fe/H]−0.31[6] dex
Rotational velocity (v sin i)1.0[5] km/s
Other designations
φ3 Ceti, 22 Cet, BD−12° 162, HD 5437, HIP 4371, HR 267, SAO 147519[7]
Database references
SIMBADdata

Phi3 Ceti is a solitary,[8] orange-hued star in the equatorial constellation of Cetus. It is faintly visible to the naked eye with an apparent visual magnitude of 5.31.[2] Based upon an annual parallax shift of 6.11 mas as seen from Earth,[1] it is located approximately 530 light years from the Sun, give or take 20 light years. The star is drifting closer with a radial velocity of −25.5 km/s.[1]

This is an evolved K-type giant star with a stellar classification of K5 III.[3] It has about 1.4[5] times the mass and 44[1] times the radius of the Sun. The star radiates 441 times the solar luminosity from its photosphere at an effective temperature of 3,974 K.[1]

References

  1. Jump up to: 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode2018A&A...616A...1G.  Gaia DR2 record for this source at VizieR.
  2. Jump up to: 2.0 2.1 2.2 Johnson, H. L. et al. (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Laboratory 4 (99): 99, Bibcode1966CoLPL...4...99J. 
  3. Jump up to: 3.0 3.1 Houk, N.; Swift, C. (1999), "Michigan catalogue of two-dimensional spectral types for the HD Stars", Michigan Spectral Survey (Ann Arbor, Michigan: Department of Astronomy, University of Michigan) 5, Bibcode1999MSS...C05....0H. 
  4. Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters 38 (5): 331, doi:10.1134/S1063773712050015, Bibcode2012AstL...38..331A. 
  5. Jump up to: 5.0 5.1 5.2 Melo, C. H. F. et al. (August 2005), "On the nature of lithium-rich giant stars. Constraints from beryllium abundances", Astronomy and Astrophysics 439 (1): 227–235, doi:10.1051/0004-6361:20041805, Bibcode2005A&A...439..227M. 
  6. Jump up to: 6.0 6.1 Soubiran, C. et al. (June 2010), "The PASTEL catalogue of stellar parameters", Astronomy and Astrophysics 515: A111, doi:10.1051/0004-6361/201014247, Bibcode2010A&A...515A.111S. 
  7. "phi03 Cet". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=phi03+Cet. 
  8. Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society 389 (2): 869–879, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode2008MNRAS.389..869E.