[13], GJ 1214 b may be cooler than any other known transiting planet prior to the discovery of Kepler-16b in 2011 by the Kepler mission. If you couldn't tell from the title, my planet is Gliese 1214b. Planets similar to or like Gliese 1214 b. They then observed the star more closely and confirmed that it dimmed by roughly 1.5% every 1.58 days. All Rights Reserved. The inner boundary of Gliese 1214’s habitable zone is 0.05 Au’s from the star and its outer boundary is 0.08 AU’s from the star. Follow-up radial-velocity measurements were then made with the HARPS spectrograph on the ESO's 3.6-meter telescope at La Silla, Chile; those measurements succeeded in providing independent evidence for the reality of the planet. Share. In early 2009, the astronomers running the project noticed that the star GJ 1214 appeared to show drops in brightness of that sort. Astronomers have claimed the existence of a new class of planet: a "water-world" with a thick, steamy atmosphere. And here are some interesting facts about the planet GJ 1214 b 1. 7 years ago | 224 views. Astronomy Science ~ GJ 1214 b is a Super-Earth planet orbiting GJ 1214. Gliese 1214b is about 2.7 times Earth’s diameter and is almost 7 times as massive. Dr Yoshida’ team now plans to conduct follow-up observations in the near future to reinforce their conclusion. Gliese 1214 b is similar to these planets: Gliese 436 b, Kepler-62f, Gliese 876 b and more. Astronomers have determined that the atmosphere of super-Earth Gliese 1214 b is likely water-rich. Gliese 1214 b[3] (often shortened to GJ 1214 b) is an exoplanet that orbits the star Gliese 1214, and was discovered in December 2009. Watch fullscreen. According to the astronomers, this finding implies that Gliese 1214b has a water-rich or a hydrogen-dominated atmosphere with extensive clouds. After COROT-7b, it was the second super-Earth to be known[1] and is the first of a new class of planets with small size and relatively low density. Dr Michitoshi Yoshida of Hiroshima University and his colleagues used the Suprime-Cam and the FOCAS optical camera aboard the Subaru Telescope to look for the Rayleigh scattering feature in the atmosphere of Gliese 1214b. Gliese 1214 b. The new observations, reported in the Astrophysical Journal (arXiv.org), showed that the exoplanet’s atmosphere does not display strong Rayleigh scattering. 2013. › Larger image GJ1214b, shown in this artist's view, is a super-Earth orbiting a red dwarf star 40 light-years from Earth. 0.05%). "As the temperature and pressure are so high, water is not in a usual form (vapor, liquid, or solid), but in an ionic or plasma form at the bottom the atmosphere — namely the interior — of Gliese 1214 b," principle investigator Norio Narita of the National Astronomical Observatory of Japan told SPACE.com by email. [7] GJ 1214 b could be a rocky planet with an outgassed hydrogen-rich atmosphere, a mini-Neptune, or an ocean planet. The parent star, Gliese 1214 is a slightly smaller and cooler version of our Sun. Gliese 1214 b is located 40 light-years from the solar system in the constellation Ophiuchus and orbits its cooler, low-mass M-type star once every 38 hours, 70 times closer than Earth is to the sun. Super-earth Gliese 1214 b likely to have a water-rich atmosphere. Multi-color Transit Photometry of GJ 1214b through BJHK s Bands and a Long-term Monitoring of the Stellar Variability of GJ 1214. Bibliographic information: Norio Narita et al. In December 2010, a study was published showing the spectrum to be largely featureless over the wavelength range of 750–1000 nm. A nearby alien planet six times the size of the Earth is covered with a water-rich atmosphere that includes a strange "plasma form" of water, scientists say. Through a comparison with theoretical models, the density in turn provides limited but highly useful information ab… |. A paper was then published in Nature announcing the planet and giving estimates of its mass, radius, and orbital parameters. [7] Because of the varying pressure at depth, models of a water world include "steam, liquid, superfluid, high-pressure ices, and plasma phases" of water. Because a thick and cloud-free hydrogen-rich atmosphere would have produced detectable spectral features, such an atmosphere appears to be ruled out. This artist’s impression shows how Gliese … GJ 1214 b; Exoplanet: List of exoplanets: 300px Size comparison of GJ 1214 b with Earth (left) and Neptune (right). Astronomers from Japan using NAOJ’s Subaru Telescope have found that the extrasolar planet Gliese 1214b has a water-rich atmosphere. Another possibility is that there may be a thick layer of high clouds, which absorbs the starlight. FUN FACTS: -Gliese 1214 b is 42 light years from Earth -GJ1214b is classified as a water-world, and is the only example of such a planet yet to be discovered -The parent star is only 16% the mass of our Sun -Its low mass may suggest GJ1214b only has a small amount of rock in it GJ 1214b is a Neptune like super earth that was discovered in December of 2009 through the MEarth Project, which utilized the Transit Method in order to search for dips in the brightness of stars (more on that later). Artist’s impression of GJ 1214b in… Given the planet's mass and radius, its density can be calculated. [4][5] For that reason, scientists have nicknamed the planet "the waterworld". Super-Earth Gliese 1214 b is located just 40 light-years outside our solar system and while it has water, it is thought to be uninhabitable ... Second planet from its star, and is most likely a water planet with a thin hydrogen–helium atmosphere. For that reason, scientists have nicknamed the world "the Waterworld". [1][14], While very little is known about GJ 1214 b, there has been speculation as to its specific nature and composition. [1], The radius of GJ 1214 b can be inferred from the amount of dimming seen when the planet crosses in front of its parent star as viewed from Earth. 2013. GJ 1214b, also known as Gliese 1214b, is 42 light years from Earth and was discovered in November 2009. Stars in the Catalogue of Nearby Stars with numbers 1000-1294 are from the 1979 extension published by Gliese and Jahreiß - these should be designated with "GJ" not "Gliese". OneMinuteNews. Due to the relatively small size of GJ 1214 b's parent star, it is feasible to perform spectroscopic observations during planetary transits. The planet, GJ 1214 b, likely has an atmosphere made of steam rather than thick clouds or hazes . The entire Gliese 1214 planetary system is of the closest known systems to our Sun, located only 42 light years away. Using the fraction of Gliese 1214b’s luminosity to the Sun’s luminosity, I calculated these boundaries. The … ApJ 773, 144; doi: 10.1088/0004-637X/773/2/144, © 2011-2020. Gliese 1214b, also designated GJ 1214b, has been designated a super-Earth because it is larger than the Earth but smaller a planet like Neptune. Astronomers from Japan using NAOJ’s Subaru Telescope have found that the extrasolar planet Gliese 1214b has a water-rich atmosphere. It is located 42 light years away in the constellation Ophiuchus. Like other ocean planets, it has a surface that is extremely sensitive to the touch of anything, especially asteroids, which means it hates them. The exoplanet of Gliese 1214b consists entirely of water, but is there life. On Earth, the scale height is about 6 miles (10 kilometers), while on Gliese 1214 b it is three times deeper, according to Narita. Image credit: NAOJ. [14], Media related to GJ 1214 b at Wikimedia Commons, Coordinates: 17h 15m 18.94s, +4° 57′ 49.7″, "Open Exoplanet Catalogue – Gliese 1214 b", "Mass–radius relationships for solid exoplanets", "10 Real Planets That Are Stranger Than Science Fiction", "Release 13-383 – NASA's Hubble Sees Cloudy Super-Worlds With Chance for More Clouds", "Astronomers Find Super-Earth Using Amateur, Off-the-Shelf Technology", Astronomers Find World with Thick, Inhospitable Atmosphere and an Icy Heart. Water-Rich Exo-Planet Found: Gliese 1214b. An update on the atmosphere of super-Earth GJ1214b, https://en.wikipedia.org/w/index.php?title=Gliese_1214_b&oldid=994903108, Creative Commons Attribution-ShareAlike License, This page was last edited on 18 December 2020, at 03:50. It is located 42 light years away in the constellation Ophiuchus. When searching for life on other planets, scientists are guided by the presence of water. It is six times larger than the Earth and filled with water—including plasma water. Beyond our solar system, a "super-earth" planet called Gliese 1214b was discovered. Bibliographic information: Norio Narita et al. [7] It is possible to propose structures by assuming different compositions, guided by scenarios for the formation and evolution of the planet. World's most comprehensive interactive database of extrasolar planets updated daily since 1995. The actual color of GJ 1214 b is not known yet. Super-Earth exoplanet Gliese 1214b passing in front of its faint red parent star. As of 2017, GJ 1214 b is the most likely known candidate for being an ocean planet. Follow. Matter in a plasma state is a bit similar to a gas. Gliese 1214 b – Per discussion at Wikipedia talk:WikiProject Astronomical objects#Gliese vs. GJ this should be at GJ 1214 b, not Gliese 1214 b. Topic. [1] Given the planet's mass and radius, its density can be calculated. [7] If it is a waterworld, it could possibly be thought of as a bigger and hotter version of Jupiter's Galilean moon Europa. Multi-color Transit Photometry of GJ 1214b through BJHK s Bands and a Long-term Monitoring of the Stellar Variability of GJ 1214. An artist’s rendition of Gliese 1214 b traveling in front of its star, shown in blue light (Credit: NAOJ) (via space.com). This super-Earth, also known as Gliese 1214b, orbits a red-dwarf star every 38 hours at a distance of 1.3 million miles, giving it an estimated temperature of 450 degrees Fahrenheit. Discovered in 2009 by the MEarth Project, this alien world is about 2.7 times Earth’s diameter and is almost 7 times as massive. This artist’s impression shows how Gliese 1214b may look as it transits its parent star. GJ 1214b is classified as a water-world, and is the only example of such a planet yet to be discovered. Gliese 1214b (GJ 1214 b) is an exoplanet that orbits the star Gliese 1214 and was discovered in December 2009. Gliese 1214b, also designated GJ 1214b, has been designated a super-Earth because it is larger than the Earth but smaller a planet like Neptune. [6], It is a super-Earth, meaning it is larger than Earth but is significantly smaller (in mass and radius) than the gas giants of the Solar System. [7] Some of the solid-phase water could be in the form of ice VII. It has a low density and no definite shape or volume—just like gas. Gliese 1214 b is an exoplanet that orbits the star Gliese 1214. Although Gliese … Gliese 1214 b. Because of the estimated old age of the planetary system and the calculated hydrodynamic escape rate of 9×105 kg s−1, scientists conclude that there has been a significant atmospheric loss during the lifetime of the planet and any current atmosphere cannot be primordial. Follow. Through a comparison with theoretical models, the density in turn provides limited but highly useful information about the composition and structure of the planet.[1]. The entire Gliese 1214 planetary system is of the closest known systems to our Sun, located only 42 light years away. That is, water existing in a plasma state. On February 21, 2012, astronomers using the Hubble Space Telescope announced that they had obtained strong supporting evidence that GJ 1214 b mostly likely has a steamy atmosphere of water based on analysis of its colors in infrared light. Earth's density is 5.5 g/cc, while that of water is 1 g/cc. Its equilibrium temperature is believed to be in the range of 393–555 K (120–282 °C; 248–539 °F), depending on how much of the star's radiation is reflected into space. Gliese 1214 b is an exoplanet that orbits the red dwarf star Gliese 1214. Gliese 1214 b is a large exoplanet 42 light years from Earth, it is a giant terrestrial planet, with its surface theoretically totally covered by water, being an ocean planet. The radius of GJ 1214 b can be inferred from the amount of dimming seen when the planet crosses in front of its parent star as viewed from Earth. An artist's rendition of Gliese 1214 b traveling in front of its star, shown in blue light. The parent star, Gliese 1214 is a slightly smaller and cooler version of our Sun. New observations from NASA's Hubble Space Telescope show that it is a waterworld enshrouded by a thick, steamy atmosphere. Parent star; Star: GJ 1214: Constellation: Ophiuchus: Right ascension (α) 17 h 15 m 18.942 s: Declination (δ) +04° 57′ 49.69″ Apparent magnitude (m V) 14.71 ± 0.03: Distance [8][9][10][11], GJ 1214 b was first detected by the MEarth Project, which searches for the small drops in brightness that can occur when an orbiting planet briefly passes in front of its parent star. It’s a super-Earth, intermediate in size between Earth and Neptune. Although they did not completely discount the possibility of a hydrogen-dominated atmosphere, the new results combined with findings from previous research suggest that Gliese 1214b is likely to have a water-rich atmosphere. the interior is assumed to be composed primarily of a water core surrounded by more water, proportions of the total mass consistent with the mass and radius are about 25% rock and 75% water, covered by a thick envelope of gases such as hydrogen and helium (c. Gliese 1214 b is one weird planet. By comparing the observed spectrum before and during transits, the spectrum of the planetary atmosphere can be inferred. In 2017, GJ 1214 b received the title of presumably known candidate for being an ocean planet. [1][14] Water planets could result from inward planetary migration and originate as protoplanets that formed from volatile ice-rich material beyond the snow-line but that never attained masses sufficient to accrete large amounts of H/He nebular gas. 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