O. This is the class of the blue/white giants.
M. The order goes, from hottest to coolest, O, B, A, F, G, K, and M
G2V; can be interpreted as yellow two tenths towards orange main sequence star
61 Cygni is a binary star system in the constellation Cygnus.Both stars have a spectral type of K, which means there temperature is around4,500 K. This is cool for a star.See related question for the hottest star.
Alpha Centauri A - It is 4.365 light years away and has a spectral class of G2V the same as our Sun
Capella (Alpha Aurigae) is a yellow dwarf star in the constellation Auriga.It has a spectral class of G8
If you are referring to the Yerkes spectral classification, a Class IV star is known as a subgiant.
The hottest star in the constellation Corvis would be 53 G. Crv with a spectral class of A0V giving it a temperature of just below 10,000 degrees K
A star with a spectral class of O is classified as a Blue Star. A red star will have a spectral class of M See related question
A star with luminosity class VI under the Yerkes Spectral Classification System. They have luminosity 1.5 to 2 magnitudes lower than main-sequence stars of the same spectral type.
Sirius is a double star. The brighter component ... the one you actually notice in the night sky ... is spectral class A1V. The faint 'secondary' component is spectral class DA2.
G2V; can be interpreted as yellow two tenths towards orange main sequence star
Alpha Centauri A - It is 4.365 light years away and has a spectral class of G2V the same as our Sun
61 Cygni is a binary star system in the constellation Cygnus.Both stars have a spectral type of K, which means there temperature is around4,500 K. This is cool for a star.See related question for the hottest star.
It is an orange giant with a spectral class of K3....
It is an orange giant with a spectral class of K3....
Based on what? Luminosity, distance or spectral class?
Red stars (Red dwarfs and red giants) have a spectral class of M.
The star Baham or Theta Pegasi is a white main sequence star of spectral class A0Vp approximately 67 light years from earth.