Spectral Classes

	Spectral Class Temperature	Color
O	30,000 - 60,000 K	Blue stars
B	10,000 - 30,000 K	Blue-white stars
A	7,500 - 10,000 K	White stars
F	6,000 - 7,500 K	Yellow-white stars
G	5,000 - 6,000 K	Yellow stars (like the Sun)
K	3,500 - 5,000K	Orange stars
M	3,000	Red stars