आर्द्रा तारा vs राजन्य तारा
| गुण | आर्द्रा तारा | राजन्य तारा |
|---|---|---|
| पदनाम | 58Alp Ori | 19Bet Ori |
| नक्षत्रमंडल | Orion | Orion |
| वर्णक्रम वर्ग | Class M — M-type (Red) | Class B — B-type (Blue-White) |
| आभासी परिमाण | +0.45 | +0.18 |
| निरपेक्ष परिमाण | -5.47 | -6.93 |
| दूरी | 498 ly | 863 ly |
| द्रव्यमान | N/A | N/A |
| त्रिज्या | N/A | N/A |
| तापमान | N/A | N/A |
| दीप्तिमानता | N/A | N/A |
मुख्य अंतर
- ◆ Rigel is a blue supergiant (spectral type B); Betelgeuse is a red supergiant (spectral type M).
- ◆ Rigel's surface temperature is ~12,100 K — more than three times hotter than Betelgeuse at ~3,600 K.
- ◆ Betelgeuse has a far larger radius (~887 R☉) than Rigel (~79 R☉).
- ◆ Both are in Orion and both are supernova candidates — among the most massive naked-eye stars.
- ◆ Rigel is slightly more intrinsically luminous at ~120,000 L☉ versus Betelgeuse's ~126,000 L☉.