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What is the origin of the letters used in star classification?

What is the origin of the letters used in star classification? Why didn't astronomers use ABCD? J. HaldimanChicago, Illinois ...
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Your guide to the types of stars, from their dusty births to violent deaths

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. On a clear, moonless night, you might be able to see thousands of ...
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What is the origin of the letters used in star classification?

Stellar spectral types originally followed alphabetical order. But as astronomers observed more stars and obtained more detailed spectra, they consolidated some categories and reordered the remaining ...
Astronomy

What is the origin of the letters used in star classification?

Stellar spectral types were initially arranged alphabetically; however, subsequent detailed observations led to the consolidation and reordering of categories, establishing the current OBAFGKM ...