Alnilam vs Rigel
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| Property | Alnilam | Rigel |
|---|---|---|
| Designación | 46Eps Ori | 19Bet Ori |
| Constelación | Orion | Orion |
| Clase Espectral | Class B — B-type (Blue-White) | Class B — B-type (Blue-White) |
| Magnitud Aparente | +1.69 | +0.18 |
| Magnitud Absoluta | -7.22 | -6.93 |
| Distancia | 1,977 ly | 863 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 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.