قلب الأسد vs السماك الأعزل
| الخاصية | قلب الأسد | السماك الأعزل |
|---|---|---|
| التسمية | 32Alp Leo | 67Alp Vir |
| الكوكبة | Leo | Virgo |
| النوع الطيفي | Class B — B-type (Blue-White) | Class B — B-type (Blue-White) |
| القدر الظاهري | +1.36 | +0.98 |
| القدر المطلق | -0,57 | -3,44 |
| المسافة | 79.3 ly | 250 ly |
| الكتلة | N/A | N/A |
| نصف القطر | N/A | N/A |
| درجة الحرارة | N/A | N/A |
| السطوع | N/A | N/A |
الاختلافات الرئيسية
- ◆ 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.