आर्द्रा तारा vs व्याध तारा
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| Property | आर्द्रा तारा | व्याध तारा |
|---|---|---|
| पदनाम | 58Alp Ori | 9Alp CMa |
| नक्षत्रमंडल | Orion | Canis Major |
| वर्णक्रम वर्ग | Class M — M-type (Red) | Class A — A-type (White) |
| आभासी परिमाण | +0.45 | -1.44 |
| निरपेक्ष परिमाण | -5.47 | 1.45 |
| दूरी | 498 ly | 8.6 ly |
| द्रव्यमान | N/A | N/A |
| त्रिज्या | N/A | N/A |
| तापमान | N/A | N/A |
| दीप्तिमानता | N/A | N/A |
Key Differences
- ◆ Sirius is an A-type main-sequence star; Betelgeuse is an M-type red supergiant nearing the end of its life.
- ◆ Betelgeuse has a radius of ~887 R☉ — over 500 times larger than Sirius at 1.71 R☉.
- ◆ Sirius is only 8.6 light-years away; Betelgeuse is about 700 light-years distant.
- ◆ Betelgeuse is luminosity-dominant at ~126,000 L☉ versus Sirius at 25.4 L☉.
- ◆ Sirius is the brightest star in the night sky; Betelgeuse is a famous supernova candidate.