알데바란 vs 아크투루스
| 속성 | 알데바란 | 아크투루스 |
|---|---|---|
| 명칭 | 87Alp Tau | 16Alp Boo |
| 별자리 | Taurus | N/A |
| 분광형 | Class K — K-type (Orange) | Class K — K-type (Orange) |
| 겉보기 등급 | +0.87 | -0.05 |
| 절대 등급 | -0.68 | -0.31 |
| 거리 | 66.6 ly | 36.7 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 orange K-type giants that have evolved off the main sequence.
- ◆ Arcturus is the brightest star in the northern celestial hemisphere at magnitude −0.05.
- ◆ Aldebaran is larger at ~44 R☉ versus Arcturus at ~25 R☉.
- ◆ Arcturus is much closer at 36.7 light-years; Aldebaran is about 65 light-years away.
- ◆ Arcturus has an unusually high proper motion and may be a remnant of a disrupted dwarf galaxy.