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Rho Draconis

Star in the constellation Draco

| b-v = +1.34 | u-b = +1.54 | r-i = Rho Draconis (ρ Draconis) is a solitary star in the northern circumpolar constellation of Draco. It is faintly visible to the naked eye with an apparent visual magnitude of 4.52. Based upon an annual parallax shift of as measured from Earth, it is located around 435 light years from the Sun. At that distance, the visual magnitude of the star is diminished by an extinction factor of 0.027 due to interstellar dust.

With a stellar classification of K3 III, Rho Draconis is a normal giant star that is past the first dredge-up phase of its post-main sequence evolution. It has the peculiar spectrum of a CN star, showing abnormal line strengths for cyanogen and calcium. The star has expanded to around 28 times the Sun's radius and it is radiating 402 times the solar luminosity from its photosphere at an effective temperature of 4,370 K.

References

| display-authors=1 | last1=McDonald | first1= I. | doi-access=free | arxiv=1208.2037 | s2cid=118665352 | postscript=. }}

| display-authors=1 | last1=Famaey | first1=B.

| display-authors=1 | last1=Mishenina | first1=T. V.

| access-date=2017-05-30 }}

References

{{cite Gaia DR3. 2249908073868915968

Info: Wikipedia Source

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k-type-giants draco-(constellation) bayer-objects durchmusterung-objects flamsteed-objects henry-draper-catalogue-objects hipparcos-objects bright-star-catalogue-objects

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