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Proper Name	None
Designations	Gliese 581 b, HO Librae b, Wolf 562 b
Classification	Gas giant
Orbital Period	5 days, 9 hours
Mean Distance from Gliese 581	6.1 million km 0.041 AU
Mass	15.8 x Earth
Diameter	Not known
Temperature	419 K (146°C)
Parent star	Gliese 581 (HO Librae), red dwarf in Libra
Other planets in this system	Gliese 581 c, super Earth Gliese 581 d, super Earth (unconfirmed) Gliese 581 e, super Earth Gliese 581 f, Earth-mass planet (unconfirmed) Gliese 581 g, super Earth (unconfirmed)

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