النظام vs النطاق

Property النظام النطاق
التسمية 46Eps Ori 50Zet Ori
الكوكبة Orion Orion
النوع الطيفي Class B — B-type (Blue-White) Class O — O-type (Blue)
القدر الظاهري +1.69 +1.74
القدر المطلق -7.22 -5.03
المسافة 1,977 ly 736 ly
الكتلة N/A N/A
نصف القطر N/A N/A
درجة الحرارة N/A N/A
السطوع N/A N/A

Key Differences

  • Alnilam (Epsilon Orionis) is the central star of Orion's Belt; Alnitak (Zeta Orionis) is the eastern star.
  • Alnilam is an F supergiant class at ~27,500 K; Alnitak is an O-type at ~29,500 K.
  • Alnilam has a mass of ~40 M☉ versus Alnitak's ~33 M☉.
  • Alnitak is closer at ~1,260 light-years; Alnilam is ~2,000 light-years away.
  • Both are expected to end their lives as supernovae within the next few million years.

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