레굴루스 vs 스피카
| 속성 | 레굴루스 | 스피카 |
|---|---|---|
| 명칭 | 32Alp Leo | 67Alp Vir |
| 별자리 | Leo | Virgo |
| 분광형 | Class B — B-type (Blue-White) | Class B — B-type (Blue-White) |
| 겉보기 등급 | +1.36 | +0.98 |
| 절대 등급 | -0.57 | -3.44 |
| 거리 | 79.3 ly | 250 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 hot B-type stars lying close to or on the ecliptic, frequently occulted by the Moon.
- ◆ Spica is a spectroscopic binary with tidal distortion; Regulus is a fast-spinning quadruple system.
- ◆ Spica is about 250 light-years away; Regulus is closer at about 79 light-years.
- ◆ Spica's temperature (~25,300 K) is roughly twice that of Regulus (~12,460 K).
- ◆ Hipparchus used Spica observations to discover the precession of the equinoxes around 130 BCE.