Sonntag, 4. November 2007

Constellation Cassiopeia


Constellation Cassiopeia ist one of the popular constellation in northen Hemispehere. its W-shape make it easily to find in the dark sky..


Cassiopeia:

Contains 5 visible stars to the naked eye :


name

distant

Type

Descript.

α , alpha Cassiopeia

120 ly

Normal star

the brightest in Cassiopeia. it has an arabic name as Shedir means chest.

β , beta Cassiopeia

46 ly

n.a


δ, delta Cassiopeia

c.a. 80 ly

n.a

Named Ksora in arabic means elbow

ε, epsilon Cassiopeia

c.a. 440 ly

n.a


ρ, rho Cassiopeia

n.a

yellowish Giant star

which is 740 times diameter of the sun.

μ, miu Cassiopeia

19.4 ly

yellowish binary star


λ, lambda Cas

300 ly


consumed of 2 stars

γ,gamma Cassiopeia

800 ly

variable stars

has a strong x-ray source, which make it probably a binary star consists of neutron star and giant star.

Deep sky object:
There are 2 Messier objects in this fields:

  1. Messier 52 (NGC 7654)
  2. Messier 103 (NGC 581)

Both are open clusters and shining at 7th magnitude (can be seen with binocular)

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