Stellar Classification

Stellar Classification is the process by which Starfleet categorizes the stars that are encountered in the galaxy. Features such as coloring, size, and surface temperature are all essential components of the process.

Class	Color	Composition	Example
A	Light Blue	Hydrogen and ionized metals	Sirius A
B	Blue	Helium and hydrogen	Alpha Eridani A
F	White	Hydrogen and ionized metals, calcium, and iron	Procyon
G	Yellow	Ionized calcium, both neutral and ionized metals	Sol
K	Orange	Neutral metals	Alpha Centauri
M	Red	Ionized atoms, especially helium	Wolf 359
O	Dark Blue	Ionized atoms	Mintaka

Real World

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