EntityQ1077290· pop 8· linked from 235 articlesHD 210277 bSign in to saveextrasolar planetExoplanet dataHost starHD 210277Discovered1998Discovered byW. M. Keck ObservatoryOrbital period442.19 daysRadius13.60 × EarthMass410.00 × EarthDistance21.30 pcvia NASA Exoplanet ArchiveConnectionslist of stars in AquariusEntityexoplanetEntityCategoriesAquarius (constellation)Exoplanets detected by radial velocityExoplanets discovered in 1998Giant planets