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HD 15920

Giant star in the constellation Cassiopeia

Giant star in the constellation Cassiopeia

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HD 15920 is a single star in the northern constellation of Cassiopeia. It has a yellow hue and is visible to the naked eye as a dim point of light with an apparent visual magnitude of 5.17. This object is located at a distance of approximately 269 light years from the Sun based on parallax, but it is drifting closer with a radial velocity of −4 km/s.

This object is an aging giant star with a stellar classification of G8III. After exhausting the supply of hydrogen at its core, this star has cooled and expanded off the main sequence – at present it has ten times the girth of the Sun. The star is around a billion years old with 2.6 times the mass of the Sun. It is radiating 64 times the Sun's luminosity from its swollen photosphere at an effective temperature of . HD 15920 is the most likely source for the X-ray emission detected at these coordinates.

References

| display-authors=1 | last1=Feuillet | first1=Diane K.

References

  1. "HD 15920".
  2. {{cite Gaia DR3. 545900827338842752
  3. (2023). "Revised Extinctions and Radii for 1.5 Million Stars Observed by APOGEE, GALAH, and RAVE". The Astrophysical Journal Supplement Series.
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g-type-giants cassiopeia-(constellation) durchmusterung-objects henry-draper-catalogue-objects hipparcos-objects bright-star-catalogue-objects
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