Fomalhaut vs Vega

Property Fomalhaut Vega
Designação 24Alp PsA 3Alp Lyr
Constelação N/A Lyra
Classe Espectral Class A — A-type (White) Class A — A-type (White)
Magnitude Aparente +1.17 +0.03
Magnitude Absoluta 1.74 0.60
Distância 25.1 ly 25.0 ly
Massa N/A N/A
Raio N/A N/A
Temperatura N/A N/A
Luminosidade N/A N/A

Key Differences

  • Both are young A-type benchmark stars with prominent debris disks, used to calibrate stellar and planetary evolution models.
  • Fomalhaut is the southernmost autumn star easily seen from northern mid-latitudes.
  • Vega is approximately 1.9 times more massive than Fomalhaut.
  • Both have been candidate targets for direct imaging of orbiting companions.
  • Fomalhaut is one of only 18 stars with disks resolved by Hubble; Vega's disk was first revealed by IRAS in 1983.

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