Mira vs Kutup Yıldızı

Property Mira Kutup Yıldızı
Adlandırma 68Omi Cet 1Alp UMi
Takımyıldız N/A N/A
Spektral Sınıf Class M — M-type (Red) Class F — F-type (Yellow-White)
Görünür Parlaklık +6.47 +1.97
Mutlak Parlaklık 1.66 -3.64
Mesafe 299 ly 433 ly
Kütle N/A N/A
Yarıçap N/A N/A
Sıcaklık N/A N/A
Parlaklık N/A N/A

Key Differences

  • Both are famous variable stars in the northern sky, though entirely different types.
  • Polaris is a Cepheid variable that pulsates predictably and was used to calibrate the Cepheid distance ladder.
  • Mira is a long-period Mira-type variable that can range from naked-eye visibility to complete invisibility.
  • Polaris is celebrated as the North Star for its positional stability near the pole; Mira is celebrated as the first recognized variable star (1596).
  • Polaris's pulsation amplitude has been shrinking over the past century; Mira continues its large-amplitude cycle.

Related Comparisons

← All Comparisons