of K-type stars. It is rotating at a leisurely rate, with a period of around 434 days. It is about 1.15 billion years old. In the past Iota Draconis has been suspected of variability. However, the star has been found to have a constant luminosity to within about 0.004 magnitudes. Hence, as of 2010, the variability remains unconfirmed. An excess emission of infrared radiation at a wavelength of 70μm suggests the presence of a circumstellar disk of dust; what astronomers term a debris disk. Planetary system The planetary companion discovered in 2002 was the first planet known to orbit a giant star. The habitable zone for this star lies in the range of 6.8–13.5 Astronomical Units, placing this planet well inside. The alignment of this planet's orbit may make it directly detectable via the transit method. Another long-period planet or brown dwarf was discovered in 2021, and the true masses of both planets were measured via astrometry. References External links SIMBAD: HD 137759 -- Variable Star Extrasolar Planets Encyclopaedia: Notes for star HIP 75458 SolStation: Edasich/Iota Draconis K-type giants Draco (constellation) Draconis, Iota Draconis, 12 137759 075458 5744 BD+59 1654 Edasich Planetary systems with two confirmed planets Circumstellar disks Suspected variables J15245578+5857577