Constellation

In this page I will explain about the constelattion and its detail. Because we can't see all the constellation on Earth at once, I will make break the constellation into 2 parts in my blog. The first is the constellation that appear on the southern hemisphere and the second is the constellation that appear on the northern hemisphere.
I. Constellation on the southern hemisphere
   1. Crux / the southern cross  

The Crux constellation

       The Crux constellation is the sign that we are in the southern hemisphere because the crux is always in the southern hemisphere. Usually we can only see 4 stars in the sky that form the Crux constellation. there are:
       1. α Crux or Acrux
           This is the brightest star on the constellation. It is located on the bottom of the constellation. Its magnitude is 1.25 and its absolute magnitude is -3.71, the spectral type is B.
       2. β Crux or Mimosa
           This is the second brightest star on the constellation. It is located on the left of the constellation. Its magnitude is 1.25 and its absolute magnitude is -3.92, the spectral tipe is B.
      3. γ Crux or Gacrux
          This is the third brightest star on the constellation. It is located on the top of the constellation. Its magnitude is 1.55 and its absolute magnitude is -0.66, the spectral type is M.
      4. δ Crux 
          This is the fourth brightest star on the constellation. It is located on the right of the constellation. Its magnitude is 2.75 and its absolute magnitude is -2.49, the spectral type is B.
   
   2. Centaurus

Centaurus constellation

        Its called the Centaurus constellation because when we link the stars it looks like a centaur. A centaur in Greek mythology is a half-man half-horse. In the constellation the centaurus looks carrying a spear and at the end of the spear there are another constellation looks like a wolf called Lupus. Here are some list of bright stars in the centaurus constellation:
   1. α Centauri A or Rigit kent
       Is the brightest star in the constellation and it is the nearest star after the sun (4.39 light years). It is located beside the β Centauri or the Hadar. Its magnitude is 0.10 and its absolute magnitude is 4.45, the spectral type is G.
    2.  α Centauri B 
       Is the partner of  α Centauri A and its located right beside  α centauri A so it looks  α Centauri B is behind  α Centauri A. Its magnitude is 1.75 and its absolute magnitude is 5.70, the spectral type is G.
   3. β Centauri or Hadar
          Is the second brightest star in centaurus constellation. It is located beside the α Centauri. Its magnitude is 0.55 and its absolute magnitude is -5.48, the spectral type is B.

Centaurus constellation art

4. γ Centauri
      The γ Centauri is located exactly above the Crux constellation. The magnitude is 2.80 and the absolute magnitude is -0.21, the spectral type is A. 

5. θ Centauri or Menkent
      The θ Centauri is located in the upper left on the constellation or its the head of the Centaurus. The magnitude is 2.05 and the absolute magnitude is 0.69, the spectral type is K.


6. κ Centauri 
     The κ Centauri is located in the upper left corner of the constellation or beside the Lupus constellation. The magnitude is 3.30 and the absolute magnitude is -2.79, the spectral type is B.


7. η Centauri
      The η Centauri is located beside the κ Centauri. Together they form the constellation arm. The magnitude is 2.30 and the absolute magnitude is -2.58, the spectral type is B.