Saiph

53Kap Ori

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Intrinsically among the most luminous stars in this group, with an absolute magnitude of −4.42, Saiph appears at only apparent magnitude 2.07 because it lies far off, some 647 light-years away. It is a hot blue-white B-type star, its colour index of −0.168 signalling a high surface temperature. Saiph carries the Kappa designation in Orion and marks one of the corners of that constellation's prominent rectangular figure. Despite ranking below Orion's brighter luminaries in Earth's sky, its great distance conceals a genuinely powerful star, its apparent faintness relative to nearby Rigel a consequence of geometry rather than any lack of intrinsic brilliance.

Đặc tính vật lý

Phân Loại Quang Phổ B Class B — B-type (Blue-White)
Chỉ số màu (B−V) -0,168

Quan sát

Cấp Sao Biểu Kiến +2.07
Cấp Sao Tuyệt Đối -4,42
Khoảng Cách 647 ly
Chòm Sao Orion

Vị trí

Xích kinh 5h 47,76m
Xích vĩ -9° 40,18′

Frequently Asked Questions

What type of star is Saiph?
Saiph is a Class B — B-type (Blue-White) star.
How far is Saiph from Earth?
Saiph is approximately 647.1 light-years from Earth.
Can you see Saiph with the naked eye?
With an apparent magnitude of 2.07, Saiph is visible to the naked eye.
What constellation is Saiph in?
Saiph is located in the constellation Orion.