Delta Ursae Minoris
Encyclopedia
Delta Ursae Minoris is a star
in the constellation
Ursa Minor
. It has the traditional name Yildun (also spelled Vildiur, Jildun, Gildun, and Yilduz), from the Turkish
yıldız "star". It may also have been called Pherkard, an alternate spelling of Pherkad, used for γ 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
.
, 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 (e.g. business ties with Manpower Incorporated and Jessyk Combine, both of Mesa), though the star system is described as including only a (highly mineral-and-metals-rich) purple asteroid belt.
Star
A star is a massive, luminous sphere of plasma held together by gravity. At the end of its lifetime, a star can also contain a proportion of degenerate matter. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth...
in the constellation
Constellation
In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, patterns formed by prominent stars within apparent proximity to one another on Earth's night sky....
Ursa Minor
Ursa Minor
Ursa Minor , also known as the Little Bear, is a constellation in the northern sky. Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, whence the name Little Dipper...
. It has the traditional name Yildun (also spelled Vildiur, Jildun, Gildun, and Yilduz), from the Turkish
Turkish language
Turkish is a language spoken as a native language by over 83 million people worldwide, making it the most commonly spoken of the Turkic languages. Its speakers are located predominantly in Turkey and Northern Cyprus with smaller groups in Iraq, Greece, Bulgaria, the Republic of Macedonia, Kosovo,...
yıldız "star". It may also have been called Pherkard, an alternate spelling of Pherkad, used for γ UMi and 11 UMi.
Delta Ursae Minoris is a white A-type
Stellar classification
In astronomy, stellar classification is a classification of stars based on their spectral characteristics. The spectral class of a star is a designated class of a star describing the ionization of its chromosphere, what atomic excitations are most prominent in the light, giving an objective measure...
main sequence dwarf
Main sequence
The main sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness. These color-magnitude plots are known as Hertzsprung–Russell diagrams after their co-developers, Ejnar Hertzsprung and Henry Norris Russell...
with an apparent magnitude
Apparent magnitude
The apparent magnitude of a celestial body is a measure of its brightness as seen by an observer on Earth, adjusted to the value it would have in the absence of the atmosphere...
of +4.35. It is approximately 183 light years
Light Years
Light Years is the seventh studio album by Australian recording artist Kylie Minogue. It was released on 25 September 2000 by Parlophone and Mushroom Records. The album's style was indicative of her return to "mainstream pop dance tunes"....
from Earth
Earth
Earth is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets...
.
In science fiction
The star is mentioned in the HonorverseHonorverse
The Honorverse refers to the military science fiction book series and sub-series created by David Weber and published by Baen Books. The series is set primarily after Honor Harrington's October 1, 3961, birth; although she is the protagonist in most of the stories, more recent entries make only...
, a series of military science fiction
Military science fiction
Military science fiction is a subgenre of science fiction in which the principal characters are members of a military service and an armed conflict is taking place, normally in space, or on a planet other than Earth...
novels written by David Weber
David Weber
David Mark Weber is an American science fiction and fantasy author. He was born in Cleveland, Ohio. Weber and his wife Sharon live in Greenville, South Carolina with their three children and "a passel of dogs"....
, as the headquarters of Technodyne Industries of Yildun, a major Solarian League
Solarian League
The Solarian League is a fictional star-nation in the Honorverse, the background setting for a series of novels and short stories in the military science fiction genre, written by David Weber and others and published by Baen Books.- Overview :...
shipbuilding corporation with rather questionable ethics (e.g. business ties with Manpower Incorporated and Jessyk Combine, both of Mesa), though the star system is described as including only a (highly mineral-and-metals-rich) purple asteroid belt.