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Ross 128 b

FI Virginis b, Gliese 447 b

Extrasolar Planet in Virgo

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Proper Name	None
Designations	Ross 128 b, FI Virginis b, Gliese 447 b
Classification	Earth-mass planet
Orbital Period	9 days, 21 hours
Mean Distance from FI Virginis	7.4 million km 0.050 AU
Mass	1.4 x Earth
Diameter	1.6 x Earth
Temperature	Not known
Parent star	Ross 128 (FI Virginis), red dwarf in Virgo
Other planets in this system	None
Notes	A world only slightly larger and more massive than Earth, Ross 128 b follows a very close orbit around its parent star, the cool and faint red dwarf Ross 128 or FI Virginis. The Ross 128 system lies just eleven light years from the Sun, making Ross 128 b the second closest known Earth-mass planet to the Solar System, after Proxima Centauri b.

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