Achernar vs Antares
| Property | Achernar | Antares |
|---|---|---|
| Designation | Alp Eri | 21Alp Sco |
| Constellation | N/A | Scorpius |
| Spectral Class | Class B — B-type (Blue-White) | Class M — M-type (Red) |
| Apparent Magnitude | +0.45 | +1.06 |
| Absolute Magnitude | -2.70 | -5.09 |
| Distance | 139 ly | 554 ly |
| Mass | N/A | N/A |
| Radius | N/A | N/A |
| Temperature | N/A | N/A |
| Luminosity | N/A | N/A |