Astronomy and Space

23 Aquilae

23 Aquilae is a binary star system in the equatorial constellation of Aquila. 23 Aquilae is its Flamsteed designation. It is at a distance of about 400 light-years (120 parsecs) with an apparent visual magnitude of 5.10, which is bright enough to be faintly visible to the naked eye as an orange-hued star. The brightness of the star is diminished by 0.21 in magnitude because of extinction from interstellar dust and gas. The system is moving closer to the Earth with a heliocentric radial velocity of –23 km/s. The primary component of this system is a magnitude 5.31 K-type giant star or bright giant with a stellar classification of K1. The star is radiating 197 times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,202 K. Orbiting at an angular separation of 3.25 arcseconds is a magnitude 8.76 companion star.

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See also

• ▸Galileo Galilei
• ▸Diocesan Sanctuary of Our Lady of Guadalupe
• ▸Earth observation satellite

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