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2 Sextantis

Star in the constellation Hydra

Star in the constellation Hydra

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2 Sextantis is a single star that is now in the equatorial constellation Hydra with the Bayer designation H Hydrae. It is located around 295 light-years away from the Sun and it is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of 4.68. This object is moving further from the Earth with a heliocentric radial velocity of +44.6 km/s. It has a relatively high proper motion, traversing the celestial sphere at the rate of per year.

This is a giant star with a stellar classification of K3 III, which, at the age of 4.58 billion years old, has exhausted the hydrogen at its core and evolved away from the main sequence. The star has 1.32 times the mass of the Sun and has expanded to 24 times the Sun's radius. It is radiating 191 times the luminosity of the Sun from its enlarged photosphere at an effective temperature of .

References

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References

  1. "2 Sex".
  2. {{cite XHIP. 47310
  3. Morton Wagman. (2003). "Lost Stars: Lost, Missing, and Troublesome Stars from the Catalogues of Johannes Bayer, Nicholas-Louis de Lacaille, John Flamsteed, and Sundry Others". McDonald & Woodward Publishing Company.
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k-type-giants hydra-(constellation) durchmusterung-objects flamsteed-objects henry-draper-catalogue-objects hipparcos-objects bright-star-catalogue-objects
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