Regulus

32Alp Leo

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Regulus is a hot blue-white B-type star whose negative B–V index of −0.087 marks a high surface temperature. Catalogued as Alpha Leonis, it is the brightest star of the constellation Leo and lies almost exactly on the ecliptic, so the Moon and planets regularly pass close by. It appears at magnitude 1.36 from a distance of 79 light-years, and its absolute magnitude of −0.57 indicates an intrinsic luminosity above the Sun's. A near-equatorial declination of +11° makes Regulus visible from essentially every inhabited latitude, anchoring the sickle-shaped figure of Leo in the spring sky.

Đặc tính vật lý

Phân Loại Quang Phổ B Class B — B-type (Blue-White)
Chỉ số màu (B−V) -0,087

Quan sát

Cấp Sao Biểu Kiến +1.36
Cấp Sao Tuyệt Đối -0,57
Khoảng Cách 79.3 ly
Chòm Sao Leo

Vị trí

Xích kinh 10h 8,37m
Xích vĩ 11° 58,03′

Frequently Asked Questions

What type of star is Regulus?
Regulus is a Class B — B-type (Blue-White) star.
How far is Regulus from Earth?
Regulus is approximately 79.3 light-years from Earth.
Can you see Regulus with the naked eye?
With an apparent magnitude of 1.36, Regulus is visible to the naked eye.
What constellation is Regulus in?
Regulus is located in the constellation Leo.