At present, the spectral classification based on several coarse resolution spectroscopic surveys in the 1990s is still the standard.

Based on its spectral classification of G0 V, it is similar in mass and luminosity to the Sun.

They have spectral classifications in the range A2-F5 and vary in magnitude by up to 0.7.

Based on its spectral classification, it is slightly less massive and luminous than the Sun.

Assuming that carbon and metals are not present, which spectral classification is seen depends on the effective temperature.

Its spectral classification has been measured as A0 and also as B9pCr.

However, for now, the spectral classification based on the two above coarse resolution spectroscopic surveys from the 1990s is still the standard.

As noted, red supergiants rarely receive these extra spectral classifications.

Hertzsprung noted that stars described with narrow lines tended to have smaller proper motions than the others of the same spectral classification.

The initial spectral classification was type F0.