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> Planetary system around the red dwarf Gliese 581
Planetary system around the red dwarf Gliese 581
author: ESO/Novapix
reference: a-exo99-30025
Image Size 300 DPI: 17 * 12 cm
Gliese 581e (foreground) is only about twice the mass of our Earth. The Gliese 581 planetary system now has four known planets, with masses of about 1.9 (planet e, left in the foreground), 16 (planet b, nearest to the star), 5 (planet c, centre), and 7 Earth-masses (planet d, with the bluish colour). The planet furthest out, Gliese 581d, orbits its host star in 66.8 days, while Gliese 581 e completes its orbit in 3.15 days.
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