Полярная звезда

1Alp UMi

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Polaris holds the Alpha designation in Ursa Minor, the Little Bear, and is additionally listed as 1 Ursae Minoris in the Flamsteed system. It is a yellow-white F-type star, an intermediate spectral class whose colour index of 0.636 reflects a surface cooler than white A stars but warmer than the orange K types. Though it appears at a moderate apparent magnitude of 1.97, its absolute magnitude of −3.64 reveals substantial intrinsic luminosity, a brightness muted by its distance of some 433 light-years. That gap between apparent and true brightness is typical of luminous stars observed across several hundred light-years of space.

Физические свойства

Спектральный класс F Class F — F-type (Yellow-White)
Показатель цвета (B−V) 0,636

Наблюдение

Видимая звёздная величина +1.97
Абсолютная звёздная величина -3,64
Расстояние 433 ly

Положение

Прямое восхождение 2h 31,79m
Склонение 89° 15,85′

Related Chemistry

Explore the chemical elements connected to Полярная звезда on our sister site ChemFYI.

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Frequently Asked Questions

What type of star is Полярная звезда?
Полярная звезда is a Class F — F-type (Yellow-White) star.
How far is Полярная звезда from Earth?
Полярная звезда is approximately 432.6 light-years from Earth.
Can you see Полярная звезда with the naked eye?
With an apparent magnitude of 1.97, Полярная звезда is visible to the naked eye.