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- 84_Ceti abstract "84 Ceti is the Flamsteed designation for a binary star system in the equatorial constellation of Cetus. It has an apparent visual magnitude of 5.7, making it faintly visible to the naked eye from dark suburban skies. Parallax measurements with the Hipparcos spacecraft put this system at a distance of around 74 light years.The primary, 84 Ceti A, is an F-type main sequence star with a stellar classification of F7V. It is slightly larger than the Sun, with 117% of the Sun's mass, 121% of the radius, and 213% of the luminosity. The abundance of elements more massive than helium is 71% of the Sun's and it has a relatively high projected rotational velocity of 32 km/s. This star is estimated to be less than half the age of the Sun, at 2.1 billion years.The secondary component, 84 Ceti B, has a classification of K2V, making it a K-type main sequence star. It lies at an angular separation of 3.3″ from the primary, which is equivalent to a physical separation of at least 74.5 AU.The space velocity components of this system are: –13(U), –25(V), –2(W) km/s. Based upon the position and motion, it is a candidate member of the Tucana-Horologium Association; this is a group of stars that share a similar motion through space and hence may have originated in the same molecular cloud. 84 Ceti is following an orbit through the Milky Way galaxy that has an eccentricity of 0.03, taking it as close as 22.3 kly (6.83 kpc) and as far as 26.2 kly (8.02 kpc) from the Galactic Center. The inclination of the orbital plane carries it as far as 260 ly (80 pc) away from the galactic plane.".
- 84_Ceti wikiPageID "40746342".
- 84_Ceti wikiPageRevisionID "594618985".
- 84_Ceti ageGyr "2.1".
- 84_Ceti appmagV "5.709".
- 84_Ceti bV "+0.522".
- 84_Ceti class "F7V + K2V".
- 84_Ceti component "84".
- 84_Ceti constell Cetus.
- 84_Ceti epoch "J2000".
- 84_Ceti mass "1.168".
- 84_Ceti metalFe "−0.15".
- 84_Ceti pError "0.84".
- 84_Ceti parallax "44.27".
- 84_Ceti propMoDec "–129.33".
- 84_Ceti propMoRa "216.51".
- 84_Ceti radialV "+3.90".
- 84_Ceti rotationalVelocity "32".
- 84_Ceti uB "–0.047".
- 84_Ceti subject Category:Binary_stars.
- 84_Ceti subject Category:Cetus_(constellation).
- 84_Ceti subject Category:F-type_main-sequence_stars.
- 84_Ceti subject Category:Flamsteed_objects.
- 84_Ceti subject Category:K-type_main-sequence_stars.
- 84_Ceti type CelestialBody.
- 84_Ceti type Star.
- 84_Ceti type PhysicalBody.
- 84_Ceti comment "84 Ceti is the Flamsteed designation for a binary star system in the equatorial constellation of Cetus. It has an apparent visual magnitude of 5.7, making it faintly visible to the naked eye from dark suburban skies. Parallax measurements with the Hipparcos spacecraft put this system at a distance of around 74 light years.The primary, 84 Ceti A, is an F-type main sequence star with a stellar classification of F7V.".
- 84_Ceti label "84 Ceti".
- 84_Ceti label "84 Ceti".
- 84_Ceti label "天囷增廿".
- 84_Ceti sameAs 84_Ceti.
- 84_Ceti sameAs m.0y6lbm0.
- 84_Ceti sameAs Q954086.
- 84_Ceti sameAs Q954086.
- 84_Ceti wasDerivedFrom 84_Ceti?oldid=594618985.
- 84_Ceti isPrimaryTopicOf 84_Ceti.
- 84_Ceti name "84 Ceti".