Upsilon Andromedae d
Upsilon Andromedae d is an extrasolar planet. It orbit's the Sun-like star Upsilon Andromedae A. It was found in April 1999 by Geoffrey Marcy and R. Paul Butler. Upsilon Andromedae A became the third star to be known to host a multiple-planet planetary system, the others are the Sun and the pulsar PSR 1257+12. Upsilon Andromedae d is the third planet from its star in order of distance. It is also the farthest known planet in its planetary system.