ポラリス (恒星)

1Alp UMi

ポラリス (恒星) is a F-type (Yellow-White) star. It carries the designation 1Alp UMi.

Located approximately 432.6 light-years from Earth, ポラリス (恒星) resides within the broader disk of our Milky Way galaxy.

ポラリス (恒星) is classified as a spectral class F star (F-type (Yellow-White)) on the Harvard spectral classification system.

ポラリス (恒星) has an apparent magnitude of +1.97, making it a bright and prominent star that is readily visible to the naked eye. It is one of the more conspicuous stars in its region of the sky. Observers will note its yellow-white hue, which corresponds to a B-V color index of +0.636.

物理的特性

スペクトル型	Class F — F-type (Yellow-White)
色指数 (B−V)	0.636

観測

見かけの等級	+1.97
絶対等級	-3.64
距離	433 ly

位置

赤経	2^h 31.79^m
赤緯	89° 15.85′

Related Chemistry

Explore the chemical elements connected to ポラリス (恒星) on our sister site ChemFYI.

Hydrogen lines still prominent in F-type supergiant spectra

Helium from core fusion, now in evolved shell-burning phase

Metallic absorption lines strengthen in F-type stars

Ca II H & K lines become visible in late-F spectra

Part of the Science FYI Family

よくある質問

What type of star is ポラリス (恒星)?

ポラリス (恒星) is a Class F — F-type (Yellow-White) star.

How far is ポラリス (恒星) from Earth?

ポラリス (恒星) is approximately 432.6 light-years from Earth.

Can you see ポラリス (恒星) with the naked eye?

With an apparent magnitude of 1.97, ポラリス (恒星) is visible to the naked eye.