Achernar vs Deneb
| Property | Achernar | Deneb |
|---|---|---|
| Designation | Alp Eri | 50Alp Cyg |
| Constellation | N/A | Cygnus |
| Spectral Class | Class B — B-type (Blue-White) | Class A — A-type (White) |
| Apparent Magnitude | +0.45 | +1.25 |
| Absolute Magnitude | -2.70 | -6.93 |
| Distance | 139 ly | 1,412 ly |
| Mass | N/A | N/A |
| Radius | N/A | N/A |
| Temperature | N/A | N/A |
| Luminosity | N/A | N/A |