mardi 23 septembre 2008

Perseus 6

Zeta Persei (ζ Per / ζ Persei) is a star in the constellation Perseus.
ζ Persei is of spectral class B1 and has an Apparent magnitude of +2.85. It is a supergiant star with a radius of 21 times that of the Sun with a luminosity of 105,000 times solar. The star has a mass of 19 solar masses and is about 980 light years from the Sun.
Atik
Al-'Atiq
"The shoulder" of the Pleiades
عاتق الثّريّا
Epsilon Persei (ε Per / ε Per) is a Class B1V, third-magnitude star in the constellation Perseus. It is, on rare occasions, called by the proper name Adid Australis, meaning "Southern One of the Upper Arm" [of the Pleiades], in Arabic.
Epsilon Persei is actually a multiple star system consisting of two main components: a blue main-sequence star of class B0.5V and a magnitude of 2.90, and a lesser white companion of class A2V and a magnitude of 3.92. The Epsilon Persei stellar system is located about 540 light-years from Earth.
Gamma Persei (γ Per / γ Per) is a Class G8III, third-magnitude star in the constellation Perseus. It is, on rare occasions, called by the proper name Al Fakhir or Alphecher, meaning "the Excellent One", in Arabic. Another Arabic name is Seid or Sa'id, meaning "forearm".
Gamma Persei is actually a multiple star system consisting of two main components: a yellow giant star of class G8 and a magnitude of 2.91, and a lesser white companion of class A2V and a magnitude of 3.00. The Gamma Persei stellar system is located about 260 light-years from Earth.
Delta Persei (δ Per / δ Persei) is a Class B5III, third-magnitude star in the constellation Perseus. It is, on rare occasions, called by the proper name Baselmeaning "the Brave One", in Arabic. Another Arabic name is Adid Borealis, meaning "Northern One of the Upper Arm [of the Pleiades]".
Delta Persei is actually a blue giant star that is the second brightest star of the open star cluster known as the Alpha Persei Cluster, second only to Mirfak. The Delta Persei stellar system is located about 530 light-years from Earth.

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