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- Q1028788 subject Q7009288.
- Q1028788 subject Q7207584.
- Q1028788 subject Q8293947.
- Q1028788 abstract "Epsilon Hydrae (ε Hya, ε Hydrae) is a Class G5, third-magnitude star system in the constellation Hydra. This stellar system is located about 129 light-years (40 parsecs) from Earth.It is a multiple star system having at least four stellar components. The pair ε Hya AB form a binary star with an orbital period of 15 years and an angular separation of 0.2 arcseconds. Component ε Hya C is separated from the AB pair by 3 arcseconds. It is a spectroscopic binary system with a period of 9.9047 days and an orbital eccentricity of 0.62, while simultaneously orbiting ε Hya AB with a period of 870 years. The fourth component, ε Hya D, shares a common proper motion with the other components and thus is most likely a gravitationally-bound member of the system. It is separated from the AB pair by 19 arcseconds and has an estimated orbital period of around 10,000 years.The primary, ε Hya A, is a giant star that is shining with 67 times the luminosity of the Sun. This energy is being radiated from the star's outer atmosphere at an effective temperature of 5,620 K, giving it the yellow hue of a G-type star. It is rotating rapidly with a projected rotational velocity of 19 km s−1. It has an X-ray luminosity of 2.8 × 1029 erg s−1.".
- Q1028788 thumbnail Hydra_IAU.svg?width=300.
- Q1028788 wikiPageExternalLink sim-id.pl?protocol=html&Ident=epsilon+hydrae.
- Q1028788 wikiPageWikiLink Q1028333.
- Q1028788 wikiPageWikiLink Q1028713.
- Q1028788 wikiPageWikiLink Q1028837.
- Q1028788 wikiPageWikiLink Q1029070.
- Q1028788 wikiPageWikiLink Q1029146.
- Q1028788 wikiPageWikiLink Q10578.
- Q1028788 wikiPageWikiLink Q111130.
- Q1028788 wikiPageWikiLink Q1125935.
- Q1028788 wikiPageWikiLink Q1145830.
- Q1028788 wikiPageWikiLink Q1357788.
- Q1028788 wikiPageWikiLink Q179600.
- Q1028788 wikiPageWikiLink Q2.
- Q1028788 wikiPageWikiLink Q208474.
- Q1028788 wikiPageWikiLink Q22066400.
- Q1028788 wikiPageWikiLink Q2703.
- Q1028788 wikiPageWikiLink Q3021924.
- Q1028788 wikiPageWikiLink Q499138.
- Q1028788 wikiPageWikiLink Q50053.
- Q1028788 wikiPageWikiLink Q555846.
- Q1028788 wikiPageWikiLink Q5571730.
- Q1028788 wikiPageWikiLink Q5875.
- Q1028788 wikiPageWikiLink Q595871.
- Q1028788 wikiPageWikiLink Q6464.
- Q1028788 wikiPageWikiLink Q678878.
- Q1028788 wikiPageWikiLink Q7009288.
- Q1028788 wikiPageWikiLink Q7207584.
- Q1028788 wikiPageWikiLink Q7850.
- Q1028788 wikiPageWikiLink Q8293947.
- Q1028788 wikiPageWikiLink Q845735.
- Q1028788 wikiPageWikiLink Q854050.
- Q1028788 wikiPageWikiLink Q8928.
- Q1028788 wikiPageWikiLink Q941266.
- Q1028788 wikiPageWikiLink Q984158.
- Q1028788 type Place.
- Q1028788 type CelestialBody.
- Q1028788 type Location.
- Q1028788 type Place.
- Q1028788 type Star.
- Q1028788 type Thing.
- Q1028788 comment "Epsilon Hydrae (ε Hya, ε Hydrae) is a Class G5, third-magnitude star system in the constellation Hydra. This stellar system is located about 129 light-years (40 parsecs) from Earth.It is a multiple star system having at least four stellar components. The pair ε Hya AB form a binary star with an orbital period of 15 years and an angular separation of 0.2 arcseconds. Component ε Hya C is separated from the AB pair by 3 arcseconds.".
- Q1028788 label "Epsilon Hydrae".
- Q1028788 depiction Hydra_IAU.svg.
- Q1028788 name "Epsilon Hydrae".