아크룩스 vs 스피카
아크룩스 and 스피카 share a spectral class, B-type, and differ elsewhere. Intrinsically the balance shifts: 아크룩스 carries an absolute magnitude of −4.20 against −3.44 for 스피카, making it about 2.0 times more luminous once distance is removed from the comparison. 아크룩스 is the remoter of the pair at 322 light-years, roughly 1.3 times the 250 that separates us from 스피카.
Property comparison
| Property | 아크룩스 | 스피카 |
|---|---|---|
| 명칭 | Alp1Cru | 67Alp Vir |
| 별자리 | Crux | Virgo |
| 분광형 | Class B — B-type (Blue-White) | Class B — B-type (Blue-White) |
| 겉보기 등급 | +0.77 | +0.98 |
| 절대 등급 | -4.20 | -3.44 |
| 거리 | 322 ly | 250 ly |
| 질량 | N/A | N/A |
| 반지름 | N/A | N/A |
| 온도 | N/A | N/A |
| 광도 | N/A | N/A |
Full data for each star: 아크룩스 · 스피카
Key differences
Key Differences
- ◆ Both are among the brightest stars in the southern sky and both are hot B-type systems.
- ◆ Acrux is the brightest star in the Southern Cross; Spica is the brightest in Virgo.
- ◆ Spica is a tidally distorted spectroscopic binary with a 4-day orbital period.
- ◆ Acrux has components resolvable through a small telescope; Spica's components cannot be resolved visually.
- ◆ Acrux appears on the national flags of Australia, New Zealand, Papua New Guinea, Samoa, and Brazil.