Star is a white dwarf, discovered in 1917 by Adriaan van Maanen, only the second white dwarf discovered. Wachmann's Flare Star is V371 Orionis. Named after Arno Arthur Wachmann. Walborn's Star is the Wolf–Rayet star BAT99-6 in the Large Magellanic Cloud (LMC) in Dorado. Named after Nolan R. Walborn. It was found to be a binary between a slash star and an O-type main sequence star. Warren and Penfold's (WP) Star is the optical counterpart of X-3 in the Large Magellanic Cloud. Named after P. R. Warren and J. E. Penfold. Wild's Supernova is SN 1966j in NGC 3198 (in Ursa Major). Named after Paul Wild. Wischnjewsky's Supernova in Fornax A. Named after Marina Wischnjewsky. The Zealey–Lee Supernova in the nucleus of an anonymous galaxy in Grus. Named after W. Zealey and S. Lee. (Note that Pandora's Star and Ratner's Star are the names of novels, not actual stars.) Covertly named stars Some stars were given names that were disguised names of individuals, which names subsequently appeared in star catalogues and thus into more general usage. The earliest noted example was Sualocin and Rotanev, which names have now been approved by the IAU WGSN (see above). More recently, during the Apollo program, it was common for astronauts to be trained in celestial navigation, and to use a list of naked-eye stars which to take bearings. As a practical joke, Gus Grissom gave names to three stars on this list, which were references to the three Apollo 1 crew: Navi for the star Gamma Cassiopeiae and which is Ivan spelled backwards, the middle name of Virgil Ivan "Gus" Grissom. Dnoces for the star Iota Ursae Majoris and which is Second spelled backwards, alluding to Edward Higgins White, II. Regor for the star Gamma Velorum and which is Roger spelled backwards, the first name of Roger Bruce Chaffee. The names stuck, perhaps in memoriam for their deaths in the Apollo 1 fire, and were used through the rest of the program. Unknown to Grissom, these stars already had traditional names; however, those were not generally used, allowing the three new names to make their way into other records. Today, they are generally considered disused—some sources listing them as "traditional". It is possible, though unlikely, that further traditional names are in fact hidden names such as these, not yet identified; etymologies for many star names are not currently known. Commercial naming As early