ज्येष्ठा तारा vs आर्द्रा तारा
Sky brightness gives आर्द्रा तारा a 0.61-magnitude edge, +0.45 to +1.06. Both lie at a comparable distance from the Sun — 554 light-years for ज्येष्ठा तारा and 498 for आर्द्रा तारा. Spectroscopically ज्येष्ठा तारा resolves as an M-type star in Scorpius and आर्द्रा तारा as an M-type star in Orion. Corrected for distance, आर्द्रा तारा outproduces ज्येष्ठा तारा by some 1.4 times, absolute magnitudes −5.47 and −5.09.
Property comparison
| Property | ज्येष्ठा तारा | आर्द्रा तारा |
|---|---|---|
| पदनाम | 21Alp Sco | 58Alp Ori |
| नक्षत्रमंडल | Scorpius | Orion |
| वर्णक्रम वर्ग | Class M — M-type (Red) | Class M — M-type (Red) |
| आभासी परिमाण | +1.06 | +0.45 |
| निरपेक्ष परिमाण | -5.09 | -5.47 |
| दूरी | 554 ly | 498 ly |
| द्रव्यमान | N/A | N/A |
| त्रिज्या | N/A | N/A |
| तापमान | N/A | N/A |
| दीप्तिमानता | N/A | N/A |
Full data for each star: ज्येष्ठा तारा · आर्द्रा तारा
Key differences
Key Differences
- ◆ Both are famous red supergiants and iconic supernova candidates visible to the naked eye.
- ◆ Betelgeuse is significantly larger at ~887 R☉; Antares has a radius of ~680 R☉.
- ◆ Antares is in Scorpius and has long been compared to Mars due to its red colour; Betelgeuse marks Orion's shoulder.
- ◆ Antares is about 604 light-years away; Betelgeuse is approximately 700 light-years distant.
- ◆ Both show irregular variability and dramatic mass-loss through powerful stellar winds.