알닐람 vs 리겔

Property 알닐람 리겔
명칭 46Eps Ori 19Bet Ori
별자리 Orion Orion
분광형 Class B — B-type (Blue-White) Class B — B-type (Blue-White)
겉보기 등급 +1.69 +0.18
절대 등급 -7.22 -6.93
거리 1,977 ly 863 ly
질량 N/A N/A
반지름 N/A N/A
온도 N/A N/A
광도 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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