ポラリス (恒星) vs Schedar

Property ポラリス (恒星) Schedar
名称 1Alp UMi 18Alp Cas
星座 N/A Cassiopeia
スペクトル型 Class F — F-type (Yellow-White) Class K — K-type (Orange)
見かけの等級 +1.97 +2.24
絶対等級 -3.64 -1.98
距離 433 ly 228 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 bright northern circumpolar stars useful for orientation near the north celestial pole.
  • ◆ Polaris (F-type Cepheid) is currently ~0.7° from the true north pole; Schedar is the brightest star in the W-shaped Cassiopeia.
  • ◆ Schedar is a K-type orange giant at ~228 light-years; Polaris is an F-type supergiant at ~431 light-years.
  • ◆ Cassiopeia (containing Schedar) and Ursa Minor (containing Polaris) are on opposite sides of the pole.
  • ◆ As the pole precesses, Schedar will become a closer pole star in the distant future.

Related Comparisons

ポラリス (恒星) vs アルゴル ポラリス (恒星) vs Mira ポラリス (恒星) vs ベガ
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