Сириус

9Alp CMa

Сириус is a A-type (White) star located in the constellation Canis Major. It carries the designation 9Alp CMa.

At a distance of approximately 8.60 light-years, Сириус is one of the Sun's closest stellar neighbors. Light that we observe from Сириус today left the star roughly 8 years ago, making it a near neighbor in galactic terms.

Сириус is classified as a spectral class A star (A-type (White)) on the Harvard spectral classification system.

With an apparent magnitude of -1.44, Сириус 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 blue-white hue, which corresponds to a B-V color index of +0.009.

Физические свойства

Спектральный класс Class A — A-type (White)
Показатель цвета (B−V) 0,009

Наблюдение

Видимая звёздная величина -1.44
Абсолютная звёздная величина 1,45
Расстояние 8.6 ly
Созвездие Canis Major

Положение

Прямое восхождение 6h 45,15m
Склонение -16° 42,97′

Related Chemistry

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

Part of the Science FYI Family

Часто задаваемые вопросы

What type of star is Сириус?
Сириус is a Class A — A-type (White) star.
How far is Сириус from Earth?
Сириус is approximately 8.6 light-years from Earth.
Can you see Сириус with the naked eye?
With an apparent magnitude of -1.44, Сириус is visible to the naked eye.
What constellation is Сириус in?
Сириус is located in the constellation Canis Major.