Альнилам vs Ригель

Property Альнилам Ригель
Обозначение 46Eps Ori 19Bet Ori
Созвездие Orion Orion
Спектральный класс Class B — B-type (Blue-White) Class B — B-type (Blue-White)
Видимая звёздная величина +1.69 +0.18
Абсолютная звёздная величина -7.22 -6.93
Расстояние 1,977 ly 863 ly
Масса N/A N/A
Радиус N/A N/A
Температура N/A N/A
Светимость N/A N/A

Key Differences

  • Both are massive, highly luminous stars visible in Orion.
  • Alnilam is the middle star of Orion's Belt — both are blue supergiants, though Alnilam is hotter at ~27,500 K versus Rigel's ~12,100 K.
  • Alnilam is about 2,000 light-years distant; Rigel is closer at ~860 light-years.
  • Alnilam has a mass of ~40 M☉, nearly double Rigel's ~21 M☉.
  • Rigel is visible at the foot of Orion; Alnilam is the central jewel of Orion's Belt.

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