Gliese 581 g /ˈɡlzə/, also known as Gl 581 g or GJ 581 g,
sometimes unofficially named Zarmina,[2] is an unconfirmed (and
disputed) exoplanet claimed to orbit the red dwarf Gliese
581,[3] about 20 light-years[4] from Earth in the constellation
of Libra.[5] It is the sixth planet purportedly discovered
orbiting the star. The discovery was announced by the Lick-
Carnegie Exoplanet Survey in late September 2010, after a decade
of observation. However, the ESO/HARPS survey team was not able
to confirm that the planet exists.[6][7]  From Wikipedia, the
free encyclopedia Jump to: navigation, search Gliese 581 g
Extrasolar planet List of extrasolar planets Parent star Star
Gliese 581 Constellation Libra Right ascension (α) 15h 19m 26s
Declination (δ) −07° 43′ 20″ Apparent magnitude (mV) 10.55
Distance 20.3 ± 0.3 ly (6.2 ± 0.1 pc) Spectral type M3V Mass (m)
0.31 M Radius (r) 0.29 R Temperature (T) 3480 ± 48 K Metallicity
[Fe/H] −0.33 ± 0.12 Age 7 – 11 Gyr Orbital elements Epoch JD
2451409.762[1] Semimajor axis (a) 0.1