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24 Persei

Aging giant in the constellation Perseus

Aging giant in the constellation Perseus

| b-v = +1.25 | u-b = +1.28

24 Persei is a star in the northern constellation of Perseus, located around 337 light years from the Sun. It is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of 4.94. The object is moving closer to the Earth with a heliocentric radial velocity of −37 km/s.

This is an aging giant star with a stellar classification of K2 III, which indicates it has exhausted the hydrogen at its core and evolved away from the main sequence. It has 1.59 times the mass of the Sun and has expanded to about 24 times the Sun's radius. The star is radiating 185 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,391 K.

References

References

  1. {{cite DR2. 137319832555250816
  2. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters.
  3. (1995). "VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)". VizieR On-line Data Catalog: V/50. Originally Published in: 1964BS....C......0H.
  4. (2014). "Sloan Magnitudes for the Brightest Stars". The Journal of the American Association of Variable Star Observers.
  5. (2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data". Astronomy & Astrophysics.
  6. (2015). "Precise radial velocities of giant stars". Astronomy & Astrophysics.
  7. (1999). "A catalog of rotational and radial velocities for evolved stars". Astronomy and Astrophysics Supplement Series.
  8. "24 Per".
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k-type-giants perseus-(constellation) durchmusterung-objects flamsteed-objects henry-draper-catalogue-objects hipparcos-objects bright-star-catalogue-objects
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