ST Andromedae is a variable star in the Andromeda constellation. It is classified as a semiregular variable pulsating giant star of specific type SRA, and varies from an apparent visual magnitude of 11.8 at minimum apparent brightness to a magnitude of around 7.7 at maximum brightness, with a period of approximately 327 days.
ST Andromedae is a carbon star and was discovered by Williamina Fleming in 1906.
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