레굴루스 vs 스피카

Property 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

Key Differences

  • ◆ 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.

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