Sirius vs Vega
| Propriedade |
Sirius
|
Vega
|
| Designação |
9Alp CMa |
3Alp Lyr |
| Constelação |
Canis Major |
Lyra |
| Classe Espectral |
Class A — A-type (White) |
Class A — A-type (White) |
| Magnitude Aparente |
-1.44 |
+0.03 |
| Magnitude Absoluta |
1,45
|
0,60
|
| Distância |
8.6 ly |
25.0 ly |
| Massa |
N/A
|
N/A
|
| Raio |
N/A
|
N/A
|
| Temperatura |
N/A
|
N/A
|
| Luminosidade |
N/A
|
N/A
|
Principais Diferenças
- ◆ 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.