Regulus vs Spica
| Eigenschaft | Regulus | Spica |
|---|---|---|
| Bezeichnung | 32Alp Leo | 67Alp Vir |
| Sternbild | Leo | Virgo |
| Spektralklasse | Class B — B-type (Blue-White) | Class B — B-type (Blue-White) |
| Scheinbare Helligkeit | +1.36 | +0.98 |
| Absolute Helligkeit | -0,57 | -3,44 |
| Entfernung | 79.3 ly | 250 ly |
| Masse | N/A | N/A |
| Radius | N/A | N/A |
| Temperatur | N/A | N/A |
| Leuchtkraft | N/A | N/A |
Wesentliche Unterschiede
- ◆ 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.