Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Delta Ursae Minoris is a star in the constellation Ursa Minor. It has the traditional name Yildun, from the Turkish y ld z "star". It may also have been called Pherkard, an alternate spelling of Pherkad, used for UMi and 11 UMi. Delta Ursae Minoris is a white A-type main sequence dwarf with an apparent magnitude of +4.35. It is approximately 183 light years from Earth. The star is mentioned in the Honorverse, a series of military science fiction novels written by David Weber, as the headquarters of Technodyne Industries of Yildun, a major Solarian League shipbuilding corporation with rather questionable ethics purple asteroid belt.