알타이르 vs 베가
| 속성 |
알타이르
|
베가
|
| 명칭 |
53Alp Aql |
3Alp Lyr |
| 별자리 |
Aquila |
Lyra |
| 분광형 |
Class A — A-type (White) |
Class A — A-type (White) |
| 겉보기 등급 |
+0.76 |
+0.03 |
| 절대 등급 |
2.21
|
0.60
|
| 거리 |
16.7 ly |
25.0 ly |
| 질량 |
N/A
|
N/A
|
| 반지름 |
N/A
|
N/A
|
| 온도 |
N/A
|
N/A
|
| 광도 |
N/A
|
N/A
|
주요 차이점
- ◆ Both are A-type stars forming part of the Summer Triangle asterism along with Deneb.
- ◆ Vega is at 25 light-years; Altair is even closer at 16.7 light-years.
- ◆ Altair rotates extremely rapidly (once every 10.4 hours), making it noticeably oblate; Vega also rotates fast but less extremely.
- ◆ Vega is about four times more luminous than Altair.
- ◆ Vega has a prominent debris disk suggesting possible planetary formation; Altair's disk is less prominent.