 As of 2010 , four extrasolar planets ( designated Upsilon Andromedae b , c , d and e ; the first three named Saffar , Samh and Majriti , respectively ) are believed to orbit υ Andromedae A. All four are likely to be jovian planets that are comparable in size to Jupiter . This was both the first multiple @-@ planet system to be discovered around a main @-@ sequence star , and the first multiple @-@ planet system known in a multiple star system . 
