Сириус vs Вега
| Свойство | Сириус | Вега |
|---|---|---|
| Обозначение | 9Alp CMa | 3Alp Lyr |
| Созвездие | Canis Major | Lyra |
| Спектральный класс | Class A — A-type (White) | Class A — A-type (White) |
| Видимая звёздная величина | -1.44 | +0.03 |
| Абсолютная звёздная величина | 1,45 | 0,60 |
| Расстояние | 8.6 ly | 25.0 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 brilliant white A-type stars and among the most prominent in the northern sky.
- ◆ Sirius is the brightest star overall at magnitude −1.46; Vega is the fifth-brightest at magnitude 0.03.
- ◆ Sirius is 8.6 light-years away; Vega is 25 light-years from the Sun.
- ◆ Vega was the original zero-point for stellar magnitude; Sirius sets the scale of brightness.
- ◆ Sirius has a white dwarf companion; Vega has a prominent debris disk but no known companion.