아크투루스
16Alp Boo
아크투루스 is a K-type (Orange) star. It carries the designation 16Alp Boo.
아크투루스 lies approximately 36.7 light-years from Earth, placing it within the Sun's local stellar neighborhood. This relatively short cosmic distance means the light reaching us today departed the star only about 36 years ago.
아크투루스 is classified as a spectral class K star (K-type (Orange)) on the Harvard spectral classification system.
With an apparent magnitude of -0.05, 아크투루스 is one of the brightest stars in the entire night sky. It is easily visible to the naked eye from virtually any location on Earth where it rises above the horizon, and it can even be glimpsed in moderate light pollution. Observers will note its orange hue, which corresponds to a B-V color index of +1.239.
물리적 특성
| 분광형 | Class K — K-type (Orange) |
| 색지수 (B−V) | 1.239 |
관측
| 겉보기 등급 | -0.05 |
| 절대 등급 | -0.31 |
| 거리 | 36.7 ly |
위치
| 적경 | 14h 15.66m |
| 적위 | 19° 10.94′ |
Related Chemistry
Explore the chemical elements connected to 아크투루스 on our sister site ChemFYI.
Metal-poor giant ([Fe/H] ≈ −0.5) — fewer iron-peak elements
Titanium lines visible in K-type giant spectra
Strong Ca II infrared triplet used to measure surface gravity
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