Fomalhaut b is a confirmed, directly-imaged extrasolar object and candidate planet orbiting the A-type main sequence star Fomalhaut, approximately 25 light-years away in the constellation of Piscis Austrinus. The object was discovered in 2008 in photos taken with the Advanced Camera for Surveys (ACS) on the Hubble Space Telescope and, according to calculations reported in January 2013, has a 2,000-year highly elliptical orbit. It has a periastron of 7.4 billion km (~50 AU) and an apastron of about 44 billion km (~300 AU). As of May 25, 2013 it is 110 AU from its parent star.
Read more about Fomalhaut B: Summary, Initial Discovery By Hubble, Early Follow-up Observations and Doubts About Fomalhaut B, Recovery/independent Confirmation With Hubble and Further Controversy, Physical Characteristics, Other Planets Orbiting Fomalhaut, See Also