Procyon vs Sirius
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| Property | Procyon | Sirius |
|---|---|---|
| Designação | 10Alp CMi | 9Alp CMa |
| Constelação | N/A | Canis Major |
| Classe Espectral | Class F — F-type (Yellow-White) | Class A — A-type (White) |
| Magnitude Aparente | +0.40 | -1.44 |
| Magnitude Absoluta | 2.67 | 1.45 |
| Distância | 11.5 ly | 8.6 ly |
| Massa | N/A | N/A |
| Raio | N/A | N/A |
| Temperatura | N/A | N/A |
| Luminosidade | N/A | N/A |
Key Differences
- ◆ Procyon (Alpha Canis Minoris) and Sirius (Alpha Canis Majoris) are both among the Sun's nearest stellar neighbours.
- ◆ Sirius is the brightest star at magnitude −1.46; Procyon is the eighth-brightest at magnitude 0.34.
- ◆ Sirius is an A-type star (hotter, more massive); Procyon is an F-type star closer to the Sun in character.
- ◆ Both are binary systems with white dwarf companions (Sirius B and Procyon B).
- ◆ Procyon is 11.46 light-years away; Sirius is slightly closer at 8.6 light-years.