GJ 1214
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| Gwiazdozbiór | |||||||
|---|---|---|---|---|---|---|---|
| Rektascensja | 17h 15m 18,94s | ||||||
| Deklinacja | +04° 57′ 49,7″ | ||||||
| Odległość | |||||||
| Wielkość obserwowana | 14,7m | ||||||
| Charakterystyka fizyczna | |||||||
| Rodzaj gwiazdy | |||||||
| Typ widmowy | M4.5 | ||||||
| Masa | 0,157 ± 0,019 M☉ | ||||||
| Promień | 0,211 ± 0,0097 R☉ | ||||||
| Wiek | 6 miliardów lat | ||||||
| Temperatura | 3000 ± 130 K | ||||||
| Alternatywne oznaczenia | |||||||
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GJ 1214 – gwiazda, czerwony karzeł o typie widmowym M4.5 położona w gwiazdozbiorze Wężownika w odległości około 40 lat świetlnych od Ziemi. Obserwowana wielkość gwiazdowa GJ 1214 wynosi 14,7m, temperatura powierzchni gwiazdy około 2700 °C, a jej jasność absolutna około 0,3% jasności Słońca.
GJ 1214 posiada układ planetarny, której jedynym odkrytym do tej pory składnikiem jest GJ 1214 b.
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GJ1214b (Artist’s impression).jpg
Autor: ESO/L. Calçada, Licencja: CC BY 4.0
This artist’s impression shows how the newly discovered super-Earth surrounding the nearby star GJ1214 may look. Discovered by the MEarth project and investigated further by the HARPS spectrograph on ESO’s 3.6-metre telescope at La Silla, GJ1214b is the second super-Earth exoplanet for which astronomers have determined the mass and radius, giving vital clues about its structure. It is also the first super-Earth around which an atmosphere has been found. The exoplanet, orbiting a small star only 40 light-years away from us, thus opens dramatic new perspectives in the quest for habitable worlds. The planet, GJ1214b, has a mass about six times that of Earth and its interior is likely mostly made of water ice. It appears to be rather hot and surrounded by a thick atmosphere, which makes it inhospitable for life as we know it on Earth.
Autor: ESO/L. Calçada, Licencja: CC BY 4.0
This artist’s impression shows how the newly discovered super-Earth surrounding the nearby star GJ1214 may look. Discovered by the MEarth project and investigated further by the HARPS spectrograph on ESO’s 3.6-metre telescope at La Silla, GJ1214b is the second super-Earth exoplanet for which astronomers have determined the mass and radius, giving vital clues about its structure. It is also the first super-Earth around which an atmosphere has been found. The exoplanet, orbiting a small star only 40 light-years away from us, thus opens dramatic new perspectives in the quest for habitable worlds. The planet, GJ1214b, has a mass about six times that of Earth and its interior is likely mostly made of water ice. It appears to be rather hot and surrounded by a thick atmosphere, which makes it inhospitable for life as we know it on Earth.