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- HD_218566 abstract "HD 218566 is a star in the equatorial zodiac constellation of Pisces. With an apparent visual magnitude of 8.6, this ninth magnitude star can not be viewed with the naked eye. However, it can be readily seen even with a small telescope.HD 218566 is a smaller star than the Sun, with about 81% of the Sun's mass and 86% of the radius of the Sun. It is a K-type main sequence star with a stellar classification of K3 V that is generating energy by the nuclear fusion of hydrogen at its core. HD 218556 is radiating around 35% of the luminosity of the Sun from its outer envelope at an effective temperature of 4,849 K. This heat gives the star the characteristic orange-hued glow of a K-type star.Compared to the Sun, this star has an unusually high abundance of elements other than hydrogen and helium, what astronomers term the metallicity. Based upon the abundance of iron, the metallicity is 2.4 times as high as in the Sun. It is much older than the Sun, with estimates of its age ranging from 8.5 to 11.5 billion years. It appears to have a negligible rate of spin as its projected rotational velocity is too small to measure.This star belongs to the thick disk population of the Milky Way. In the galactic coordinate system, it has space velocity components of [U, V, W] = [77, –61, –8] km s−1. HD 218556 is following an orbit through the galaxy with an eccentricity of 0.36 ± 0.01 that carries it as close as 14.3 kly (4.4 kpc) and as far as 30.3 kly (9.3 kpc) from the Galactic Center. The orbital tilt carries this star as much as 0.6 kly (0.18 kpc) from the galactic plane.Based upon high resolution measurements performed at the W. M. Keck Observatory, HD 218566 shows cyclical variations in radial velocity that suggest gravitational perturbation by orbiting companion. This candidate object is estimated to be orbiting the parent star with a period of 225.7 ± 0.4 days at an eccentricity of 0.3 ± 0.1. The semi-major axis for this Keplerian orbit is an estimated 0.6873 Astronomical Units. Because the inclination of the orbit remains unknown, the mass of this companion has not been determined. However, it can be constrained to have a mass of at least 21% the mass of Jupiter. There is no evidence of additional companions in the system.".
- HD_218566 wikiPageID "34615928".
- HD_218566 wikiPageLength "6997".
- HD_218566 wikiPageOutDegree "30".
- HD_218566 wikiPageRevisionID "646850028".
- HD_218566 wikiPageWikiLink Apparent_magnitude.
- HD_218566 wikiPageWikiLink Apparent_visual_magnitude.
- HD_218566 wikiPageWikiLink Astronomical_Unit.
- HD_218566 wikiPageWikiLink Astronomical_unit.
- HD_218566 wikiPageWikiLink Bonner_Durchmusterung.
- HD_218566 wikiPageWikiLink Category:Henry_Draper_Catalogue_objects.
- HD_218566 wikiPageWikiLink Category:K-type_main-sequence_stars.
- HD_218566 wikiPageWikiLink Category:Pisces_(constellation).
- HD_218566 wikiPageWikiLink Category:Planetary_systems.
- HD_218566 wikiPageWikiLink Celestial_equator.
- HD_218566 wikiPageWikiLink Constellation.
- HD_218566 wikiPageWikiLink Durchmusterung.
- HD_218566 wikiPageWikiLink Effective_temperature.
- HD_218566 wikiPageWikiLink Galactic_coordinate_system.
- HD_218566 wikiPageWikiLink Gravitational_perturbation.
- HD_218566 wikiPageWikiLink Henry_Draper_Catalogue.
- HD_218566 wikiPageWikiLink Hipparcos.
- HD_218566 wikiPageWikiLink Hipparcos_catalogue.
- HD_218566 wikiPageWikiLink Jupiter.
- HD_218566 wikiPageWikiLink K-type_main-sequence_star.
- HD_218566 wikiPageWikiLink K-type_main_sequence_star.
- HD_218566 wikiPageWikiLink Kepler_orbit.
- HD_218566 wikiPageWikiLink Keplerian_orbit.
- HD_218566 wikiPageWikiLink Metallicity.
- HD_218566 wikiPageWikiLink Nuclear_fusion.
- HD_218566 wikiPageWikiLink Perturbation_(astronomy).
- HD_218566 wikiPageWikiLink Pisces_(constellation).
- HD_218566 wikiPageWikiLink Projected_rotational_velocity.
- HD_218566 wikiPageWikiLink Radial_velocity.
- HD_218566 wikiPageWikiLink Semi-major_axis.
- HD_218566 wikiPageWikiLink Smithsonian_Astrophysical_Observatory_Star_Catalog.
- HD_218566 wikiPageWikiLink Space_velocity_(astronomy).
- HD_218566 wikiPageWikiLink Star.
- HD_218566 wikiPageWikiLink Stellar_classification.
- HD_218566 wikiPageWikiLink Stellar_kinematics.
- HD_218566 wikiPageWikiLink Stellar_rotation.
- HD_218566 wikiPageWikiLink W._M._Keck_Observatory.
- HD_218566 wikiPageWikiLink Zodiac.
- HD_218566 wikiPageWikiLinkText "HD 218566".
- HD_218566 absmagV "6.187".
- HD_218566 ageGyr "8.5".
- HD_218566 appmagV "8.628".
- HD_218566 bV "1.014".
- HD_218566 class "K3 V".
- HD_218566 constell Pisces_(constellation).
- HD_218566 epoch "J2000".
- HD_218566 gravity "4.48".
- HD_218566 hasPhotoCollection HD_218566.
- HD_218566 luminosity "0.353".
- HD_218566 mass "0.81".
- HD_218566 metalFe "0.38".
- HD_218566 pError "1.14".
- HD_218566 parallax "35.02".
- HD_218566 propMoDec "–97.02".
- HD_218566 propMoRa "+632.56".
- HD_218566 radius "0.86".
- HD_218566 rotationalVelocity "0".
- HD_218566 temperature "4849".
- HD_218566 wikiPageUsesTemplate Template:Reflist.
- HD_218566 wikiPageUsesTemplate Template:Starbox_astrometry.
- HD_218566 wikiPageUsesTemplate Template:Starbox_begin.
- HD_218566 wikiPageUsesTemplate Template:Starbox_catalog.
- HD_218566 wikiPageUsesTemplate Template:Starbox_character.
- HD_218566 wikiPageUsesTemplate Template:Starbox_detail.
- HD_218566 wikiPageUsesTemplate Template:Starbox_end.
- HD_218566 wikiPageUsesTemplate Template:Starbox_observe.
- HD_218566 wikiPageUsesTemplate Template:Stars_of_Pisces.
- HD_218566 subject Category:Henry_Draper_Catalogue_objects.
- HD_218566 subject Category:K-type_main-sequence_stars.
- HD_218566 subject Category:Pisces_(constellation).
- HD_218566 subject Category:Planetary_systems.
- HD_218566 hypernym Star.
- HD_218566 type CelestialBody.
- HD_218566 type Place.
- HD_218566 type Star.
- HD_218566 type Catalogue.
- HD_218566 type Location.
- HD_218566 type Place.
- HD_218566 type Thing.
- HD_218566 comment "HD 218566 is a star in the equatorial zodiac constellation of Pisces. With an apparent visual magnitude of 8.6, this ninth magnitude star can not be viewed with the naked eye. However, it can be readily seen even with a small telescope.HD 218566 is a smaller star than the Sun, with about 81% of the Sun's mass and 86% of the radius of the Sun. It is a K-type main sequence star with a stellar classification of K3 V that is generating energy by the nuclear fusion of hydrogen at its core.".
- HD_218566 label "HD 218566".
- HD_218566 sameAs m.0j2598c.
- HD_218566 sameAs Q5629329.
- HD_218566 sameAs Q5629329.
- HD_218566 wasDerivedFrom HD_218566?oldid=646850028.
- HD_218566 isPrimaryTopicOf HD_218566.
- HD_218566 name "HD 218566".