Aldebaran vs Sao Đại Giác

Property Aldebaran Sao Đại Giác
Ký Hiệu 87Alp Tau 16Alp Boo
Chòm Sao Taurus N/A
Phân Loại Quang Phổ Class K — K-type (Orange) Class K — K-type (Orange)
Cấp Sao Biểu Kiến +0.87 -0.05
Cấp Sao Tuyệt Đối -0.68 -0.31
Khoảng Cách 66.6 ly 36.7 ly
Khối Lượng N/A N/A
Bán Kính N/A N/A
Nhiệt Độ N/A N/A
Độ Sáng N/A N/A

Key Differences

  • Both are orange K-type giants that have evolved off the main sequence.
  • Arcturus is the brightest star in the northern celestial hemisphere at magnitude −0.05.
  • Aldebaran is larger at ~44 R☉ versus Arcturus at ~25 R☉.
  • Arcturus is much closer at 36.7 light-years; Aldebaran is about 65 light-years away.
  • Arcturus has an unusually high proper motion and may be a remnant of a disrupted dwarf galaxy.

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