アルゴル vs Mirfak

Property アルゴル Mirfak
名称 26Bet Per 33Alp Per
星座 Perseus Perseus
スペクトル型 Class B — B-type (Blue-White) Class F — F-type (Yellow-White)
見かけの等級 +2.09 +1.79
絶対等級 -0.11 -4.17
距離 89.9 ly 506 ly
質量 N/A N/A
半径 N/A N/A
温度 N/A N/A
光度 N/A N/A

Key Differences

  • ◆ Both are prominent stars in Perseus and are often observed together.
  • ◆ Mirfak is a yellow-white supergiant and the brightest member of the Alpha Persei Cluster.
  • ◆ Algol is the famous Demon Star — the prototype eclipsing binary variable.
  • ◆ Algol varies in brightness every 2.87 days; Mirfak does not show significant variability.
  • ◆ Mirfak is farther away at ~510 light-years; Algol is ~93 light-years from Earth.

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