References External links Jim Kaler's Stars, University of Illinois: IOTA HER (Iota Herculis) An Atlas of the Universe: Multiple Star Orbits Hercules (constellation) Herculis, Iota 4 Tiān Bàng wu B-type subgiants Spectroscopic binaries Slowly pulsating B stars Herculis, 085 086414 160762 6588 Durchmusterung objects