scope. At a wide separation of 840 arcseconds is component C, a dim, magnitude 10.2 K-type star with the designation . It shares a common proper motion with A and is at a very similar distance, but is separated from the close pair by over . It has a spectral classification of K5V. There are several other stars brighter and closer to Gamma Ceti than – , HD 16985, and – but they are all more distant background stars. Properties The measured angular diameter of the primary star is . At the estimated distance of this system, this yields a physical size of about 1.9 times the radius of the Sun. The secondary component of this system is an X-ray source with a luminosity of . Gamma Ceti is about 300 million years old, and it appears to be a member of the stream of stars loosely associated with the Ursa Major Moving Group. The primary has been examined for an excess of infrared emission that would suggest the presence of circumstellar matter, but none was found. References External links Information about Kaffaljidhma on STARS Gamma Ceti on AAS WorldWide Telescope Cetus (constellation) Ceti, Gamma Kaffaljidhma Ceti, 86 A-type main-sequence stars F-type main-sequence stars K-type main-sequence stars 012706 016970 0804 Durchmusterung objects