알타이르 vs 베가
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| Property | 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 |
Key Differences
- ◆ 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.