Antares vs Kaus Australis

Property Antares Kaus Australis
Designación 21Alp Sco 20Eps Sgr
Constelación Scorpius Sagittarius
Clase Espectral Class M — M-type (Red) Class B — B-type (Blue-White)
Magnitud Aparente +1.06 +1.79
Magnitud Absoluta -5.09 -1.42
Distancia 554 ly 143 ly
Masa N/A N/A
Radio N/A N/A
Temperatura N/A N/A
Luminosidad N/A N/A

Key Differences

  • Both are among the brightest stars in the summer southern sky from mid-latitudes.
  • Antares is a famous red supergiant; Kaus Australis is a blue-white B-type giant — very different spectral types.
  • Antares is the heart of Scorpius; Kaus Australis is the brightest star in Sagittarius, marking the Teapot.
  • Both are visible on the same summer evenings, making them easy to compare directly in the sky.
  • Antares is far more luminous at ~75,900 L☉ versus Kaus Australis at ~363 L☉.

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