النظام vs النطاق
| الخاصية | 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 |
الاختلافات الرئيسية
- ◆ 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.