DBpedia – Linked Data Fragments

Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/99_Herculis> ?p ?o }

• 99_Herculis abstract "99 Herculis is the Flamsteed designation for a binary star system in the northern constellation of Hercules. It has an apparent visual magnitude of 5.1, which, according to the Bortle scale, makes it faintly visible to the naked eye from suburban skies. Measurements made with the Hipparcos spacecraft show an annual parallax shift of 0.064″, corresponding to a physical distance of about 51.0 ly (15.6 pc) from the Sun.The binary nature of this star system was first discovered in 1859 by English astronomer W. R. Dawes. The two stellar components orbit around their common center of mass, or barycenter, with a period of 56.3 years and an eccentricity of 0.766. The semi-major axis of their orbit spans an angle of 1.06 arcseconds, which corresponds to a physical dimension of 16.5 AU. The plane of their orbit is inclined by an angle of about 39° to the line-of-sight from the Earth. Reports of a third component of this system now appear doubtful.The primary component, 99 Herculis A, is an F-type main sequence star with a stellar classification of F7 V. It has 94% of the Sun's mass and nearly double the luminosity, but has an estimated 10% greater radius. The effective temperature of the star's outer atmosphere is 5,938 K, giving it a white-hued glow. This is a metal-poor star, showing overall abundances of elements—other than hydrogen or helium—equal to 60% of those in the Sun.The secondary component, 99 Herculis B, is fainter by 3.35 magnitudes compared to the primary. It is a K-type main sequence star with a classification of K4 V. With 46% of the mass of the Sun, it has 74% of the Sun's radius but shines with just 14% of the Sun's luminosity.Images from the Herschel Space Observatory show that a disk of dusty debris is orbiting the barycenter at an average radius of 120 AU. Oddly, the disk appears to be misaligned with the orbital plane of the binary system. This may be the result of an interaction within another star system some time in the past. Most of the disk emission appears to be caused by icy objects having a diameter of 10 cm or less, with a net mass of about ten times the mass of the Earth.".
• 99_Herculis wikiPageID "40774778".
• 99_Herculis wikiPageLength "11191".
• 99_Herculis wikiPageOutDegree "39".
• 99_Herculis wikiPageRevisionID "610914998".
• 99_Herculis wikiPageWikiLink Apparent_magnitude.
• 99_Herculis wikiPageWikiLink Astronomical_unit.
• 99_Herculis wikiPageWikiLink Barycenter.
• 99_Herculis wikiPageWikiLink Binary_star.
• 99_Herculis wikiPageWikiLink Bortle_scale.
• 99_Herculis wikiPageWikiLink Bright_Star_Catalogue.
• 99_Herculis wikiPageWikiLink Category:Binary_stars.
• 99_Herculis wikiPageWikiLink Category:Circumstellar_disks.
• 99_Herculis wikiPageWikiLink Category:F-type_main-sequence_stars.
• 99_Herculis wikiPageWikiLink Category:Flamsteed_objects.
• 99_Herculis wikiPageWikiLink Category:Hercules_(constellation).
• 99_Herculis wikiPageWikiLink Category:K-type_main-sequence_stars.
• 99_Herculis wikiPageWikiLink Center_of_mass.
• 99_Herculis wikiPageWikiLink Constellation.
• 99_Herculis wikiPageWikiLink Debris_disk.
• 99_Herculis wikiPageWikiLink Durchmusterung.
• 99_Herculis wikiPageWikiLink Effective_temperature.
• 99_Herculis wikiPageWikiLink F-type_main-sequence_star.
• 99_Herculis wikiPageWikiLink Flamsteed_designation.
• 99_Herculis wikiPageWikiLink Gliese_Catalogue_of_Nearby_Stars.
• 99_Herculis wikiPageWikiLink Henry_Draper_Catalogue.
• 99_Herculis wikiPageWikiLink Hercules_(constellation).
• 99_Herculis wikiPageWikiLink Herschel_Space_Observatory.
• 99_Herculis wikiPageWikiLink Hipparcos.
• 99_Herculis wikiPageWikiLink K-type_main-sequence_star.
• 99_Herculis wikiPageWikiLink Line-of-sight_propagation.
• 99_Herculis wikiPageWikiLink Orbital_eccentricity.
• 99_Herculis wikiPageWikiLink Orbital_inclination.
• 99_Herculis wikiPageWikiLink Orbital_period.
• 99_Herculis wikiPageWikiLink Orbital_plane_(astronomy).
• 99_Herculis wikiPageWikiLink Parallax.
• 99_Herculis wikiPageWikiLink Semi-major_axis.
• 99_Herculis wikiPageWikiLink Smithsonian_Astrophysical_Observatory_Star_Catalog.
• 99_Herculis wikiPageWikiLink Solar_luminosity.
• 99_Herculis wikiPageWikiLink Solar_mass.
• 99_Herculis wikiPageWikiLink Stellar_classification.
• 99_Herculis wikiPageWikiLink William_Rutter_Dawes.
• 99_Herculis wikiPageWikiLinkText "99 Her".
• 99_Herculis wikiPageWikiLinkText "b Her".
• 99_Herculis absmagV "4.08".
• 99_Herculis ageGyr "9.37".
• 99_Herculis appmagV "5.066".
• 99_Herculis axis "1.06".
• 99_Herculis bV "+0.548".
• 99_Herculis class "F7 V + K4 V".
• 99_Herculis component "99".
• 99_Herculis constell Hercules_(constellation).
• 99_Herculis eccentricity "0.766".
• 99_Herculis epoch "J2000".
• 99_Herculis gravity "4.17".
• 99_Herculis inclination "39".
• 99_Herculis luminosity "0.14".
• 99_Herculis luminosity "1.96".
• 99_Herculis mass "0.46".
• 99_Herculis mass "0.94".
• 99_Herculis metalFe "–0.60".
• 99_Herculis node "41".
• 99_Herculis pError "0.34".
• 99_Herculis parallax "63.93".
• 99_Herculis periarg "116".
• 99_Herculis periastron "1997.62".
• 99_Herculis period "56.3".
• 99_Herculis propMoDec "+110.08".
• 99_Herculis propMoRa "–100.32".
• 99_Herculis radialV "+1.7".
• 99_Herculis radius "0.74".
• 99_Herculis radius "1.1".
• 99_Herculis rotationalVelocity "5".
• 99_Herculis temperature "5938".
• 99_Herculis uB "–0.056".
• 99_Herculis wikiPageUsesTemplate Template:Convert.
• 99_Herculis wikiPageUsesTemplate Template:DEC.
• 99_Herculis wikiPageUsesTemplate Template:RA.
• 99_Herculis wikiPageUsesTemplate Template:Reflist.
• 99_Herculis wikiPageUsesTemplate Template:Sky.
• 99_Herculis wikiPageUsesTemplate Template:Starbox_astrometry.
• 99_Herculis wikiPageUsesTemplate Template:Starbox_begin.
• 99_Herculis wikiPageUsesTemplate Template:Starbox_catalog.
• 99_Herculis wikiPageUsesTemplate Template:Starbox_character.
• 99_Herculis wikiPageUsesTemplate Template:Starbox_detail.
• 99_Herculis wikiPageUsesTemplate Template:Starbox_end.
• 99_Herculis wikiPageUsesTemplate Template:Starbox_observe.
• 99_Herculis wikiPageUsesTemplate Template:Starbox_orbit.
• 99_Herculis wikiPageUsesTemplate Template:Stars_of_Hercules.
• 99_Herculis subject Category:Binary_stars.
• 99_Herculis subject Category:Circumstellar_disks.
• 99_Herculis subject Category:F-type_main-sequence_stars.
• 99_Herculis subject Category:Flamsteed_objects.
• 99_Herculis subject Category:Hercules_(constellation).
• 99_Herculis subject Category:K-type_main-sequence_stars.
• 99_Herculis hypernym Designation.
• 99_Herculis type CelestialBody.
• 99_Herculis type Place.
• 99_Herculis type Star.
• 99_Herculis type Location.

• next