Polaris vs Schedar
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| Property | Polaris | Schedar |
|---|---|---|
| Designação | 1Alp UMi | 18Alp Cas |
| Constelação | N/A | Cassiopeia |
| Classe Espectral | Class F — F-type (Yellow-White) | Class K — K-type (Orange) |
| Magnitude Aparente | +1.97 | +2.24 |
| Magnitude Absoluta | -3.64 | -1.98 |
| Distância | 433 ly | 228 ly |
| Massa | N/A | N/A |
| Raio | N/A | N/A |
| Temperatura | N/A | N/A |
| Luminosidade | N/A | N/A |
Key Differences
- ◆ Both are bright northern circumpolar stars useful for orientation near the north celestial pole.
- ◆ Polaris (F-type Cepheid) is currently ~0.7° from the true north pole; Schedar is the brightest star in the W-shaped Cassiopeia.
- ◆ Schedar is a K-type orange giant at ~228 light-years; Polaris is an F-type supergiant at ~431 light-years.
- ◆ Cassiopeia (containing Schedar) and Ursa Minor (containing Polaris) are on opposite sides of the pole.
- ◆ As the pole precesses, Schedar will become a closer pole star in the distant future.