Iota Gruis

Iota Gruis, Latinized from ι Gruis, is a binary star system in the southern constellation of Grus. It has an apparent visual magnitude of 3.90, which is bright enough to be seen with the naked eye at night. The distance to this system, as determined using an annual parallax shift of 17.80 mas as seen from the Earth, is about 183 light years.

This is a single-lined spectroscopic binary with an orbital period of 409.6 day and an eccentricity of 0.66. The yellow-hued primary component is an evolved K-type giant star with a stellar classification of K1 III. It is an X-ray emitter with a flux of $7.82 mas$.