Acrux vs Spica
| Eigenschaft | Acrux | Spica |
|---|---|---|
| Bezeichnung | Alp1Cru | 67Alp Vir |
| Sternbild | Crux | Virgo |
| Spektralklasse | Class B — B-type (Blue-White) | Class B — B-type (Blue-White) |
| Scheinbare Helligkeit | +0.77 | +0.98 |
| Absolute Helligkeit | -4,20 | -3,44 |
| Entfernung | 322 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 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.