Gliese 581 b Zie Gliese 581 b voor het hoofdartikel over dit onderwerp. The large planet in the foreground is the newly discovered GJ 581g, which has a 37-day orbit right in the middle of the star's habitable zone and is only three to four times the mass of Earth, with a diameter 1.2 to 1.4 times that of Earth.NASA - National Aeronautics and Space Administration With a mass at least 5.5 times that of the Earth, it is classified as a super-Earth (a category of planets with masses greater than Earth's up to 10 Earth masses).
Gliese 581 is known at least from 1886, when it was included in An M-class dwarf star such as Gliese 581 has a much lower mass than the Sun, causing the core region of the star to fuse hydrogen at a significantly lower rate.
The Star. Your browser or your browser's settings are not supported. The star has almost a third (31 +/- 2 percent) of Sol's mass, as small as 29 percent of its diameter (Chabrier and Baraffe, 2000; Pasinetti-Fracassini et al, 2001; and Johnson and Wright, 1983), and a bit more than one percent (around 0.0135) of its bolometric luminosity (Vogt et al, 2010; Bonfils et al, 2005, in pdf). Door de geringe afstand tot de ster heeft deze planeet een oppervlaktetemperatuur van naar schatting 150 °Celsius. Gliese 581 b (Gl 581 b) est une exoplanète découverte dans le système planétaire de l'étoile Gliese 581, une naine rouge de 0,31 masses solaires située à quelque 20,3 années-lumière (soit 6,2 pc, ou encore 1,92×10 14 km) de la Terre, dans la constellation de la Balance Gliese 581c /ˈɡliːzə/ (Gl 581c or GJ 581c) is a planet orbiting within the Gliese 581 system. From the apparent magnitude and distance, astronomers have estimated an effective temperature of 3200 K and a visual In 1994 Edward Weis concluded that Gliese 581, like half the 43 dwarf M stars he studied over a multi-year period, showed long term variability (and page 1137, Fig 1 shows Gliese 581 had magnitude 10.58 in 1982 and between 10.57 and 10.56 from 1985 to 1990). This artist's conception shows the inner four planets of the Gliese 581 system and their host star, a red dwarf star only 20 light years away from Earth. If you know your browser is up to date, you should check to ensure that This artist's conception shows the inner four planets of the Gliese 581 system and their host star, a red dwarf star only 20 light years away from Earth. It is the second planet discovered in the system and the third in order from the star. Gliese 581 b heeft ongeveer 0,056 maal de massa van de Jupiter (17 maal de massa van de Aarde wat vergelijkbaar is met de massa van Neptunus). Gliese 581 b heeft een massa die 17 keer zo groot is als die van de aarde, en legt zijn baan af in 5,366 dagen op een afstand van 6 miljoen km tot de ster. To get the best experience possible, please download a compatible browser.
javascript is enabled. Gliese 581 b zweeft relatief dicht bij Gliese 581 en vervult een volledige baan in slechts in een omlooptijd van 5,4 dagen in zijn gemiddelde afstand van ongeveer 6 miljoen km (0,041 AU).
Gliese 581 is a cool and dim, main sequence red dwarf (M2.5 V). Planets of the Gliese 581 System. Gliese 581 (/ ˈ ɡ l iː z ə /) is a star of spectral type M3V (a red dwarf) at the center of the Gliese 581 planetary system, about 20 light years away from Earth in the Libra constellation.Its estimated mass is about a third of that of the Sun, and it is the 89th closest known star to the Sun.