デネブ vs ベガ
| 特性 |
デネブ
|
ベガ
|
| 名称 |
50Alp Cyg |
3Alp Lyr |
| 星座 |
Cygnus |
Lyra |
| スペクトル型 |
Class A — A-type (White) |
Class A — A-type (White) |
| 見かけの等級 |
+1.25 |
+0.03 |
| 絶対等級 |
-6.93
|
0.60
|
| 距離 |
1,412 ly |
25.0 ly |
| 質量 |
N/A
|
N/A
|
| 半径 |
N/A
|
N/A
|
| 温度 |
N/A
|
N/A
|
| 光度 |
N/A
|
N/A
|
主な違い
- ◆ Both are A-type stars in the Summer Triangle, but they differ enormously in distance and luminosity.
- ◆ Vega is only 25 light-years away; Deneb is the most distant first-magnitude star at ~2,615 light-years.
- ◆ Deneb is intrinsically about 196,000 times more luminous than the Sun; Vega is 40 times more luminous.
- ◆ Vega was the original photometric zero-magnitude reference star.
- ◆ Deneb is a white supergiant with a radius ~203 R☉; Vega is a near-main-sequence star with radius ~2.4 R☉.