Fellow Stargazers: While searching for an "official name" for our solar system (other than THE Solar System) I found online the designation "Mk19c" but was unable to confirm it with a reputable source. I'd never heard that designation before, and was wondering if anyone on this list could confirm that, and possibly explain the meaning of the letters and numbers. Any insights appreciated. Thanks. -Dan Heim -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.