[7] The surface gravity on Kepler-442b would be 30% stronger than that of Earth, assuming a rocky composition similar to that of Earth.[8]. Detailed information on planet Kepler-1638 b orbiting around star Kepler-1638. It has a radius of 1.34 R⊕. It has a temperature of 4402 K and is around 2.9 billion years old, with some uncertainty. Wednesday 7 October 2015. Its discovery was announced in 2015. Kepler-442 b is a super Earth exoplanet that orbits a K-type star. Kepler-442 b est une exoplanète, probablement rocheuse , orbitant dans la zone habitable de son étoile Kepler-442, de type spectral K (naine orange), située à environ 1 120 années-lumière de la Terre dans la constellation de la Lyre. Kepler 442b It is orbiting a star cooler than the sun, about 1100 light years away. [3] It has a radius of 1.34 R⊕. The planet orbits a (K-type) star named Kepler-442. Kepler-442b orbits its host star with an orbital period of 112 days, 9 hours, 10 minutes, and 24 seconds, and has an orbital radius of about 0.4 times that of Earth's (a little larger than the distance of Mercury from the Sun, which is about 0.38 AU). This gives it a greater change of having the conditions, surface temperature, atmosphere, and water, that are needed for life, than any.. This is reflected in its orbital distance, just outside of the point where the tidal interactions from its star would be strong enough to tidally lock it. Kepler-1229 b est probablement une super-terre rocheuse, une exoplanète dont le rayon et la masse sont plus grands que la Terre, mais plus petits que ceux des géantes gazeuses telles Neptune ou Uranus. The habitable zone is the sweet spot around a star where temperatures are right for water to exist in its liquid form. The planet was announced as being located within the habitable zone of its star, a region where liquid water could exist on the surface of the planet. Around 1120 lightyears away, Kepler-442b is a planet 1.3 times the size of the Earth. Un article de Wikipédia, l'encyclopédie libre. The star Kepler-442 is a K-type main-sequence star with a mass of 0.61 solar masses, a radius of 0.59 solar radii and surface temperature of 4129 °C. A superhabitable planet would have a thicker atmosphere than, The temperature of Kepler-442b is unknown. [16] This is uncertain because Kepler-442b's atmosphere and surface are unknown, but this would be possible. It is expected to be a rocky planet with mass 2.34 times that of Earth. [14] However, because of the uncertainty of the age of Kepler-442, it is likely it may have passed this stage, making Kepler-442b potentially more suitable for habitability. Additionally the Square Kilometer Array would significantly improve radio observations over the Arecibo Observatory and Green Bank Telescope. And its surface is rocky, with 60% chance of being there. Découverte à l'aide de la méthode des transits, elle a un volume comparable à celui de la Terre, avec un rayon 1,34 fois plus grand . Nearby stars with planets can then be studied by the upcoming James Webb Space Telescope and future large ground-based telescopes to analyze atmospheres, determine masses and infer compositions. This list shows all planetary and stellar components in the system. The atmosphere of Kepler-442b is unknown. The surface temperature of the Kepler 442b is 4402, which is its characteristic K5 type. Kepler-442b may have oceans. [4][5] It is outside of the zone (around 0.02 AU) where tidal forces from its host star would be enough to tidally lock it. Because of its radius, it is likely to be a rocky planet with a solid surface. It has a radius of 1.34 R⊕. Kepler 442b It is orbiting a star cooler than the sun, about 1100 light years away. http://exoplanetarchive.ipac.caltech.edu/cgi-bin/DisplayOverview/nph-DisplayOverview?objname=Kepler-442+b, Kepler 438b: Most Earth-like planet ever discovered could be home for alien life, http://www.jpl.nasa.gov/news/news.php?release=2015-003, http://phl.upr.edu/projects/habitable-exoplanets-catalog/data, L'Encyclopédie des planètes extrasolaires, NASA – Kepler Discoveries – Summary Table, https://fr.wikipedia.org/w/index.php?title=Kepler-442_b&oldid=176477392, Exoplanète découverte par la méthode des transits, Planète tellurique orbitant en zone habitable, Pages avec des arguments non numériques dans formatnum, Catégorie Commons avec lien local différent sur Wikidata, Portail:Sciences de la Terre et de l'Univers/Articles liés, licence Creative Commons attribution, partage dans les mêmes conditions, comment citer les auteurs et mentionner la licence. Kepler-438b et Kepler-442b ont ainsi des chances de présenter des caractéristiques semblables à notre planète avec la présence d’eau liquide mais de là à parler de présence de vie…. Kepler-22's star is a bit The red dwarf stars are found on Kepler 442b. ", "A Review of the Best Habitable Planet Candidates", https://www.wired.co.uk/article/kepler-442b-more-habitable-earth, NASA – Kepler Discoveries – Summary Table, List of interstellar and circumstellar molecules, Exoplanetary Circumstellar Environments and Disk Explorer, List of microorganisms tested in outer space, Search for extraterrestrial intelligence (SETI), Enceladus Life Signatures and Habitability, Astrobiology Science and Technology for Exploring Planets, European Astrobiology Network Association, Communication with extraterrestrial intelligence, Gauss's Pythagorean right triangle proposal, Potential cultural impact of extraterrestrial contact, https://en.wikipedia.org/w/index.php?title=Kepler-442b&oldid=994389754, Exoplanets discovered by the Kepler space telescope, Near-Earth-sized exoplanets in the habitable zone, Creative Commons Attribution-ShareAlike License, K-type star, which is the proposed best type of the star for a habitable planet, Its size is 1.34 earth radii and mass is 2.36 earth masses (a superhabitable planet would be 1.3 times earth's size and 2 earth masses), It is in the center of the habitable zone. 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