BD+202457 is a 10th-magnitude K-type bright giant star located approximately 4,800 light-years away in the constellation of Leo. The name refers to the
s−1. The discovery of BD+14 4559 b was reported in the journal The Astrophysical Journal on June 10, 2009. BD+20°2457 b BD+20°2457c HD 240210 b Niedzielski
(2009). "Substellar-mass Companions to the K-dwarf BD+14 4559 and the K-giants HD 240210 and BD+202457". The Astrophysical Journal. 707 (1): 768–777. arXiv:0906