19 Draconis is a star located in the northern constellation of [[Draco]]. It is a [[Flamsteed designation|Flamsteed designation]], indicating it is the 19th star in the constellation Draco in order of increasing right ascension, as cataloged by [[John Flamsteed]].
Nomenclature The designation "19 Draconis" originates from [[John Flamsteed]]'s star catalog, published posthumously in 1725. It is also known by other designations in various star catalogues, including [[Henry Draper Catalogue|HD]] 156384, [[Hipparcos catalogue|HIP]] 84399, and [[Bright Star Catalogue|HR]] 6424.
Characteristics 19 Draconis is classified as an [[F-type main-sequence star|F6V type main-sequence star]]. This classification indicates that it is a [[yellow-white dwarf]] star that is currently undergoing hydrogen fusion in its core, similar to our Sun, but with a higher effective temperature and greater luminosity. Its estimated surface temperature is approximately 6,550 [[Kelvin|K]], which contributes to its yellow-white hue. The star has an apparent visual magnitude of approximately 4.88, making it faintly visible to the unaided eye from dark-sky locations.
Based on parallax measurements, 19 Draconis is located approximately 160 [[light-year|light-years]] (49 [[parsec|parsecs]]) from Earth. It possesses a mass roughly 1.3 times that of the Sun and a radius approximately 1.5 times the Sun's radius. Its luminosity is estimated to be about 3.7 times that of the Sun. The star's age is estimated to be around 2.5 billion years.
See also
- [[List of stars in Draco]]
- [[Star catalogue]]
Categories [[Category:Stars in Draco]] [[Category:F-type main-sequence stars]] [[Category:Flamsteed objects]]