Алиот vs Dubhe
| Свойство | Алиот | Dubhe |
|---|---|---|
| Обозначение | 77Eps UMa | 50Alp UMa |
| Созвездие | Ursa Major | Ursa Major |
| Спектральный класс | Class A — A-type (White) | Class F — F-type (Yellow-White) |
| Видимая звёздная величина | +1.76 | +1.81 |
| Абсолютная звёздная величина | -0,26 | -1,07 |
| Расстояние | 82.5 ly | 123 ly |
| Масса | N/A | N/A |
| Радиус | N/A | N/A |
| Температура | N/A | N/A |
| Светимость | N/A | N/A |
Ключевые различия
- ◆ Both are the two brightest stars of the Big Dipper in Ursa Major, but they differ in type and motion.
- ◆ Alioth (Epsilon UMa) is an A-type chemically peculiar variable; Dubhe (Alpha UMa) is a K-type giant.
- ◆ Alioth is a member of the Ursa Major Moving Group; Dubhe is not and moves in the opposite direction.
- ◆ Dubhe forms the 'pointer pair' with Merak that indicates Polaris.
- ◆ Alioth is slightly brighter than Dubhe despite the Alpha/Epsilon designations.