Although there are probably a lot of such unobserved late-M type variables one of the distressing things to me is that it's a good "bad" example of the incompleteness with which the literature is indexed. SIMBAD shows three citations for the star, beginning with its discovery as a very-red star by Blanco & Munch in the 1950s. But the other two deal with it strictly as an IRAS source (among a long list). Where was the star observed to be variable? When? On what plate material or visual or photoelectric observations? OK, you can dig down in the GCVS and find the key paper, but why isn't it listed in SIMBAD? (I know the practical answer to this last question, so I'm just complaining that things are the way they are.) \Brian
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