アケルナル vs アルタイル

Property アケルナル アルタイル
名称 Alp Eri 53Alp Aql
星座 N/A Aquila
スペクトル型 Class B — B-type (Blue-White) Class A — A-type (White)
見かけの等級 +0.45 +0.76
絶対等級 -2.70 2.21
距離 139 ly 16.7 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 among the most rapidly rotating known stars and are significantly oblate as a result.
  • ◆ Altair rotates in ~10.4 hours and has been directly imaged to confirm its flattened disk-like shape.
  • ◆ Achernar's equatorial diameter is 56% wider than its poles — the most flattened bright star known.
  • ◆ Altair is an A-type star; Achernar is a hotter B-type star.
  • ◆ Altair is very close at 16.7 light-years; Achernar is 139 light-years away.

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アケルナル vs レグルス ベガ vs アルタイル
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