Kutup Yıldızı vs Vega
| Property | Kutup Yıldızı | Vega |
|---|---|---|
| Adlandırma | 1Alp UMi | 3Alp Lyr |
| Takımyıldız | N/A | Lyra |
| Spektral Sınıf | Class F — F-type (Yellow-White) | Class A — A-type (White) |
| Görünür Parlaklık | +1.97 | +0.03 |
| Mutlak Parlaklık | -3.64 | 0.60 |
| Mesafe | 433 ly | 25.0 ly |
| Kütle | N/A | N/A |
| Yarıçap | N/A | N/A |
| Sıcaklık | N/A | N/A |
| Parlaklık | N/A | N/A |
Key Differences
- ◆ Polaris is an F-type Cepheid variable supergiant; Vega is a stable A-type main-sequence star.
- ◆ Polaris is 431 light-years away; Vega is much closer at 25 light-years.
- ◆ Polaris sits near the north celestial pole and has guided navigators for centuries; Vega was the pole star ~14,000 years ago.
- ◆ Vega served as the original zero-magnitude reference for the photometric system.
- ◆ Polaris pulsates in brightness; Vega has a debris disk suggesting a forming planetary system.