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Sky & Scope Meet Fomalhaut, the Autumn Star


Daniel Johnson

Vitals Official name (IAU-approved) Fomalhaut Other Designations Alpha Piscis Austrini, Fomalhaut A Nicknames The Autumn Star, The Loneliest Star Apparent Magnitude 1.17 Distance from Earth ≈ 25 light-years Type Main sequence, A3V Color Bluish white Mass ≈ 2 M☉ Radius ≈ 2 R☉ Constellation Piscis Austrinus (Southern Fish) Right Ascension 22h 57m 39s Declination –29° 37' 19” Multiple system? Yes Variable star? No Exoplanets status One known, plus a debris disk Probable […]

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