Iota Horologii b
Iota Horologii b (ι Hor b / ι Horologii b), often catalogued HR 810 b, is an extrasolar planet approximately 56.5 light-years away in the constellation of Horologium (the Pendulum Clock). Iota Horologii b has a minimum mass 2.26 times that of Jupiter; astrometric measurements from Gaia suggest it has a true mass of 6.2 MJ. == Detection and discovery == The discovery of Iota Horologii b was the result of a long-term survey of forty Solar analog stars that was begun in November 1992.