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17 Aquarii

Star in the constellation Aquarius

Summary

Star in the constellation Aquarius

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17 Aquarii, abbreviated 17 Aqr, is a spectroscopic binary star system in the constellation of Aquarius. 17 Aquarii is the Flamsteed designation. It appears to the naked eye as a faint sixth magnitude star, having a combined apparent visual magnitude of 5.99. The distance to 17 Aqr can be estimated from its annual parallax shift of , which yields a separation of around 660 light years. It is moving further away with a heliocentric radial velocity of 18 km/s.

A preliminary orbit for the pair gives a period of 7290 days and an eccentricity of 0.4. The primary component is an aging giant star with a stellar classification of K4/5 III. It is radiating 495 times the Sun's luminosity from its photosphere at an effective temperature of 3,951 K.

References

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References

  1. "17 Aqr".
  2. {{cite DR2
Wikipedia Source

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k-type-giants spectroscopic-binaries aquarius-(constellation) durchmusterung-objects flamsteed-objects henry-draper-catalogue-objects hipparcos-objects bright-star-catalogue-objects
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