Exoplanet Catalog
GJ 581 b
GJ 581 b is a Neptune-like exoplanet that orbits an M-type star. Its mass is 15.8 Earths, it takes 5.4 days to complete one orbit of its star, and is 0.04061 AU from its star. Its discovery was announced in 2005.
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PLANET TYPE
Neptune-like
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DISCOVERY DATE
2005
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MASS
15.8 Earths
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PLANET RADIUS
0.366 x Jupiter
(estimate) |
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ORBITAL RADIUS
0.04061 AU
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ORBITAL PERIOD
5.4 days
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ECCENTRICITY
0.0
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DETECTION METHOD
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