Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/HD_17156_b> ?p ?o }
- HD_17156_b abstract "HD 17156 b is an extrasolar planet approximately 240 light-years away in the constellation of Cassiopeia. The planet was discovered orbiting the yellow subgiant star HD 17156 in April 2007. The planet is classified as a relatively cool hot Jupiter planet slightly smaller than Jupiter but slightly larger than Saturn in a so-called \"torched orbit\". This highly-eccentric three-week orbit takes it approximately 0.0523 AU of the star at periastron before swinging out to approximately 0.2665 AU at apastron. Its eccentricity is about the same as 16 Cygni Bb, a so-called \"eccentric Jupiter\". Until 2009, HD 17156 b was the transiting planet with the longest orbital period.The planet was discovered on April 14, 2007 by a team using the radial velocity method on the Keck and Subaru telescopes. The team made an initial, negative, transit search, but they were only able to cover 25% of the search space. This left the possibility of a transit open.After the possibility of a transit was discussed on oklo.org, various groups performed a follow-on search. These searches confirmed a three-hour transit on October 2, 2007 and a paper was published two days later.Careful radial velocity measurements have made it possible to detect the Rossiter–McLaughlin effect, the shifting in photospheric spectral lines caused by the planet occulting a part of the rotating stellar surface. This effect allows the measurement of the angle between the planet's orbital plane and the equatorial plane of the star. This planet's spin-orbit angle was initially measured by Narita in 2007 as +62 ± 25 but has been remeasured by Cochran +9.4 ± 9.3 degrees. By analogy with HD 149026 b, a low angle would imply the formation of the planet was peaceful and probably involved interactions with the protoplanetary disc. A much larger angle suggests a violent interplay with other protoplanets. Given its eccentricity the latter is equally probable until the discrepancy of the Rossiter results is resolved.It is so distant from its star and eccentric, that it will never enter a secondary eclipse relative to Earth, of the planet behind the star. The star's true temperature, and so the planet's surface temperature, cannot be measured with accuracy. Due to the high eccentricity the atmosphere of the planet undergoes a factor of 27 variation in stellar flux during each orbit.".
- HD_17156_b thumbnail Exoplanet_Comparison_HD_17156_b.png?width=300.
- HD_17156_b wikiPageExternalLink ?p=242.
- HD_17156_b wikiPageID "18211737".
- HD_17156_b wikiPageLength "9885".
- HD_17156_b wikiPageOutDegree "35".
- HD_17156_b wikiPageRevisionID "690024201".
- HD_17156_b wikiPageWikiLink 16_Cygni_Bb.
- HD_17156_b wikiPageWikiLink Apsis.
- HD_17156_b wikiPageWikiLink Astronomical_unit.
- HD_17156_b wikiPageWikiLink Cassiopeia_(constellation).
- HD_17156_b wikiPageWikiLink Category:Cassiopeia_(constellation).
- HD_17156_b wikiPageWikiLink Category:Exoplanets.
- HD_17156_b wikiPageWikiLink Category:Exoplanets_detected_by_radial_velocity.
- HD_17156_b wikiPageWikiLink Category:Exoplanets_discovered_in_2007.
- HD_17156_b wikiPageWikiLink Category:Giant_planets.
- HD_17156_b wikiPageWikiLink Category:Transiting_exoplanets.
- HD_17156_b wikiPageWikiLink Constellation.
- HD_17156_b wikiPageWikiLink Debra_Fischer.
- HD_17156_b wikiPageWikiLink Doppler_spectroscopy.
- HD_17156_b wikiPageWikiLink Eccentric_Jupiter.
- HD_17156_b wikiPageWikiLink Exoplanet.
- HD_17156_b wikiPageWikiLink File:HD17156b-orbit.png.
- HD_17156_b wikiPageWikiLink HD_149026_b.
- HD_17156_b wikiPageWikiLink HD_17156.
- HD_17156_b wikiPageWikiLink HD_17156_c.
- HD_17156_b wikiPageWikiLink Hot_Jupiter.
- HD_17156_b wikiPageWikiLink Light-year.
- HD_17156_b wikiPageWikiLink Occultation.
- HD_17156_b wikiPageWikiLink Radial_velocity.
- HD_17156_b wikiPageWikiLink Rossiter–McLaughlin_effect.
- HD_17156_b wikiPageWikiLink Star.
- HD_17156_b wikiPageWikiLink Subaru_Telescope.
- HD_17156_b wikiPageWikiLink Subgiant.
- HD_17156_b wikiPageWikiLink Transit_(astronomy).
- HD_17156_b wikiPageWikiLink W._M._Keck_Observatory.
- HD_17156_b wikiPageWikiLinkText "HD 17156 b".
- HD_17156_b wikiPageWikiLinkText "b".
- HD_17156_b wikiPageWikiLinkText "planet".
- HD_17156_b age "3.38".
- HD_17156_b appMag "8.17".
- HD_17156_b argPeri "121.71".
- HD_17156_b class "G0".
- HD_17156_b colwidth "30".
- HD_17156_b constell Cassiopeia_(constellation).
- HD_17156_b density "3470".
- HD_17156_b discoverers "Fischer et al.".
- HD_17156_b discoveryDate "2007-04-14".
- HD_17156_b discoveryMethod "Radial velocity and Transit".
- HD_17156_b discoverySite Subaru_Telescope.
- HD_17156_b discoverySite W._M._Keck_Observatory.
- HD_17156_b discoveryStatus "Published".
- HD_17156_b distPc "75".
- HD_17156_b eccentricity "0.6768".
- HD_17156_b gravity "67".
- HD_17156_b inclination "86.573".
- HD_17156_b mass "1.275".
- HD_17156_b mass "3.191".
- HD_17156_b metallicity "0.24".
- HD_17156_b period "21.2163979".
- HD_17156_b planet "b".
- HD_17156_b radius "1.087".
- HD_17156_b radius "1.5007".
- HD_17156_b semiAmp "274.2".
- HD_17156_b semimajor "0.1589".
- HD_17156_b star HD_17156.
- HD_17156_b star "HD+17156".
- HD_17156_b tPeri "2454438.4835".
- HD_17156_b temperature "6079".
- HD_17156_b temperature "?".
- HD_17156_b wikiPageUsesTemplate Template:Commonscat-inline.
- HD_17156_b wikiPageUsesTemplate Template:Convert.
- HD_17156_b wikiPageUsesTemplate Template:DEC.
- HD_17156_b wikiPageUsesTemplate Template:Planetbox_begin.
- HD_17156_b wikiPageUsesTemplate Template:Planetbox_character.
- HD_17156_b wikiPageUsesTemplate Template:Planetbox_discovery.
- HD_17156_b wikiPageUsesTemplate Template:Planetbox_end.
- HD_17156_b wikiPageUsesTemplate Template:Planetbox_image.
- HD_17156_b wikiPageUsesTemplate Template:Planetbox_orbit.
- HD_17156_b wikiPageUsesTemplate Template:Planetbox_reference.
- HD_17156_b wikiPageUsesTemplate Template:Planetbox_star.
- HD_17156_b wikiPageUsesTemplate Template:RA.
- HD_17156_b wikiPageUsesTemplate Template:Reflist.
- HD_17156_b wikiPageUsesTemplate Template:Sky.
- HD_17156_b wikiPageUsesTemplate Template:±.
- HD_17156_b subject Category:Cassiopeia_(constellation).
- HD_17156_b subject Category:Exoplanets.
- HD_17156_b subject Category:Exoplanets_detected_by_radial_velocity.
- HD_17156_b subject Category:Exoplanets_discovered_in_2007.
- HD_17156_b subject Category:Giant_planets.
- HD_17156_b subject Category:Transiting_exoplanets.
- HD_17156_b hypernym Planet.
- HD_17156_b type Planet.
- HD_17156_b type Type.
- HD_17156_b type Exoplanet.
- HD_17156_b type Object.
- HD_17156_b type Planet.
- HD_17156_b type Type.
- HD_17156_b comment "HD 17156 b is an extrasolar planet approximately 240 light-years away in the constellation of Cassiopeia. The planet was discovered orbiting the yellow subgiant star HD 17156 in April 2007. The planet is classified as a relatively cool hot Jupiter planet slightly smaller than Jupiter but slightly larger than Saturn in a so-called \"torched orbit\".".
- HD_17156_b label "HD 17156 b".