Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Gliese_581> ?p ?o. }
- Gliese_581 abstract "Gliese 581 (/ˈɡliːzə/, also known as HO Librae) is a main sequence red star with spectral type M3V, located about 22 light years away from Earth in the constellation Libra. Its estimated mass is about a third of that of the Sun, and it is the 89th closest known star to the Sun. Observations suggest that the star has a planetary system consisting of at least three, likely four, and controversially six planets. The existence of the planets Gliese 581 e, b, and c is certain. The existence of d is, generally, regarded certain ,except in one study where it is regarded as likely. The existence of f and g is disputed.Gliese 581 has been the subject of a "huge amount of attention" in the quest to discover the first habitable extrasolar planet; first for c, and then d and g.The star first gained attention after Gliese 581 c, the first low-mass extrasolar planet found near a habitable zone, was discovered in April 2007. It has since been shown that under known terrestrial planet climate models, Gliese 581 c is likely to have a runaway greenhouse effect, and hence is probably too hot to be habitable, analogous to Venus. A subsequently proposed planet Gliese 581 d, may be just inside or just outside the outer boundary of the habitable zone (depending in part on the greenhouse properties of its atmosphere), analogous to Mars.Gliese 581 e was announced in April 2009; this was at the time the least-massive planet found around a normal star.Excitement spiked again in September 2010 with the claimed discovery of Gliese 581 g, orbiting between c and d, believed to be the planet with the greatest likelihood of having conditions suitable for liquid water at its surface found to date because it is within the middle of the habitable zone.Its existence remains in dispute.On 27 November 2012, the European Space Agency announced a comet belt, with at least ten times as many comets as the Solar system. This put constraints on possible planets beyond 0.75 AU.".
- Gliese_581 thumbnail Gliese_581.jpg?width=300.
- Gliese_581 wikiPageExternalLink GJ581.png.
- Gliese_581 wikiPageExternalLink index.html.
- Gliese_581 wikiPageExternalLink star.php?st=Gl+581.
- Gliese_581 wikiPageExternalLink geochemsoc.org.
- Gliese_581 wikiPageExternalLink gliese581c.htm.
- Gliese_581 wikiPageExternalLink g581.html.
- Gliese_581 wikiPageExternalLink 9607.html.
- Gliese_581 wikiPageExternalLink earths-twin-discovered.
- Gliese_581 wikiPageExternalLink lib35.html.
- Gliese_581 wikiPageExternalLink ep-202-the-planets-at-gliese-581.
- Gliese_581 wikiPageExternalLink 20070424?hub=SciTech.
- Gliese_581 wikiPageExternalLink dynamics.
- Gliese_581 wikiPageExternalLink html.
- Gliese_581 wikiPageExternalLink iii.dat.
- Gliese_581 wikiPageExternalLink seticalc.htm.
- Gliese_581 wikiPageExternalLink article.cfm?articleID=25A261F0-E7F2-99DF-313249A4883E6A86&chanID=sa007.
- Gliese_581 wikiPageExternalLink gl581.htm.
- Gliese_581 wikiPageExternalLink 070424_hab_exoplanet.html.
- Gliese_581 wikiPageID "2758531".
- Gliese_581 wikiPageRevisionID "605852658".
- Gliese_581 absmagV "11.6".
- Gliese_581 ageGyr "7".
- Gliese_581 apoapsis ">60".
- Gliese_581 appmagV "10.56".
- Gliese_581 colwidth "30".
- Gliese_581 constell Libra_(constellation).
- Gliese_581 disk "Comet belt".
- Gliese_581 eccentricity "0".
- Gliese_581 eccentricity "0.031".
- Gliese_581 eccentricity "0.07".
- Gliese_581 eccentricity "0.25".
- Gliese_581 eccentricity "0.32".
- Gliese_581 epoch Epoch_(astronomy).
- Gliese_581 equinox "J2000.0".
- Gliese_581 exoplanet Gliese_581_b.
- Gliese_581 exoplanet Gliese_581_c.
- Gliese_581 exoplanet Gliese_581_d.
- Gliese_581 exoplanet Gliese_581_e.
- Gliese_581 exoplanet Gliese_581_f.
- Gliese_581 exoplanet Gliese_581_g.
- Gliese_581 hasPhotoCollection Gliese_581.
- Gliese_581 luminosityBolometric "0.013".
- Gliese_581 mass "0.31".
- Gliese_581 massEarth "1.95".
- Gliese_581 massEarth "15.86".
- Gliese_581 massEarth "18.36".
- Gliese_581 massEarth "2.24".
- Gliese_581 massEarth "5.34".
- Gliese_581 massEarth "6.06".
- Gliese_581 massEarth "6.24".
- Gliese_581 massEarth "6.98".
- Gliese_581 massEarth "?".
- Gliese_581 massEarth "≥3.1".
- Gliese_581 massEarth "≥7.0".
- Gliese_581 metalFe "−0.33 ± 0.12".
- Gliese_581 pError "2.62".
- Gliese_581 parallax "160.91".
- Gliese_581 periapsis "25".
- Gliese_581 period "12.9182".
- Gliese_581 period "12.9191".
- Gliese_581 period "3.14867".
- Gliese_581 period "3.14945".
- Gliese_581 period "36.562".
- Gliese_581 period "433".
- Gliese_581 period "5.36841".
- Gliese_581 period "5.36865".
- Gliese_581 period "66.64".
- Gliese_581 period "66.87".
- Gliese_581 propMoDec "−94.52".
- Gliese_581 propMoRa "−1233.51".
- Gliese_581 radialV "−9.5 ± 0.5".
- Gliese_581 radius "0.29".
- Gliese_581 radiusEarth "1.34".
- Gliese_581 radiusEarth "2.08".
- Gliese_581 radiusEarth "2.2".
- Gliese_581 radiusEarth "4.65".
- Gliese_581 semimajor "0.028".
- Gliese_581 semimajor "0.0284533".
- Gliese_581 semimajor "0.0406163".
- Gliese_581 semimajor "0.041".
- Gliese_581 semimajor "0.072993".
- Gliese_581 semimajor "0.073".
- Gliese_581 semimajor "0.14601".
- Gliese_581 semimajor "0.21847".
- Gliese_581 semimajor "0.22".
- Gliese_581 semimajor "0.758".
- Gliese_581 subject Category:Gliese_581.
- Gliese_581 subject Category:Hipparcos_objects.
- Gliese_581 subject Category:Libra_(constellation).
- Gliese_581 subject Category:M-type_main-sequence_stars.
- Gliese_581 subject Category:Objects_named_with_variable_star_designations.
- Gliese_581 subject Category:Planetary_systems_with_four_confirmed_planets.
- Gliese_581 subject Category:Variable_stars.
- Gliese_581 type CelestialBody.
- Gliese_581 type Star.
- Gliese_581 type PhysicalBody.
- Gliese_581 comment "Gliese 581 (/ˈɡliːzə/, also known as HO Librae) is a main sequence red star with spectral type M3V, located about 22 light years away from Earth in the constellation Libra. Its estimated mass is about a third of that of the Sun, and it is the 89th closest known star to the Sun. Observations suggest that the star has a planetary system consisting of at least three, likely four, and controversially six planets. The existence of the planets Gliese 581 e, b, and c is certain.".
- Gliese_581 label "Gliese 581".