R Andromedae

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What Wikipedia says

R Andromedae (R And) is a Mira-type variable star in the constellation Andromeda located about 1,200 light-years away. Its spectral class is type S because it shows absorption bands of zirconium monoxide (ZrO) in its spectrum.

Excerpt from the Wikipedia article “R Andromedae”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg), CC BY 3.0, via Wikimedia Commons.