EntityQ1041585· pop 9· linked from 161 articlesHD 240210 bSign in to saveextrasolar planet orbiting the star HD 240210Exoplanet dataHost starHD 240210Discovered2009Discovered byMcDonald ObservatoryOrbital period501.75 daysRadius12.80 × EarthMass1655.82 × EarthDistance372.40 pcvia NASA Exoplanet ArchiveConnectionsapsisEntityBD+20°2457EntityCategoriesCassiopeia (constellation)Exoplanets detected by radial velocityExoplanets discovered in 2009Giant planets