EntityQ1334636· pop 16· linked from 156 articlesHR 8799 bSign in to saveextrasolar planetExoplanet dataHost starHR 8799Discovered2008Discovered byGemini ObservatoryOrbital period170000 daysRadius13 × EarthMass2000 × EarthEquilibrium temp1200 KDistance41.24 pcvia NASA Exoplanet ArchiveConnectionsW. M. Keck ObservatoryEntityastronomical unitEntityCategoriesExoplanets detected by direct imagingExoplanets discovered in 2008Giant planetsHR 8799Pegasus (constellation)