text: But K5 means yellow, not blue (somewhat yellower than the sun).  Anyway, assuming K5 is correct, and that HD835 is a main-sequence star, and not something weird like a yellowish "red" giant, then it would have an absolute magnitude of around 8, which means it looks like a magnitude 8 star from one parsec distance.  But since it appears a magnitude and a half dimmer, that means it's only one-fourth as bright as it would be at one parsec, so it must be twice as far away (inverse square law).  So its distance is about two parsecs, which equals 7 light-years.