Hapes systemCanonLegendsInfinities Sources The Essential Guide to Planets and MoonsThe Essential AtlasAppearancesThe Courtship of Princess Leia (First mentioned) (Unknown)Unknown UnknownNoneYoung Jedi Knights: Lightsabers (First appearance) (Unknown)Unknown UnknownNoneYoung Jedi Knights: Crisis at Crystal Reef (Mentioned only) (Unknown)Unknown UnknownNoneThe New Jedi Order: Dark Journey (Unknown)Unknown UnknownNoneThe New Jedi Order: Enemy Lines I: Rebel Dream (Mentioned only) (Unknown)Unknown UnknownNoneLegacy of the Force: Tempest (as Hapan system) (Unknown)Unknown UnknownNoneLegacy of the Force: Exile (Mentioned only) (as Hapan system) (Unknown)Unknown UnknownNoneLegacy of the Force: Sacrifice (Unknown)Unknown UnknownNoneLegacy of the Force: Inferno (Mentioned only) (Unknown)Unknown UnknownNoneLegacy of the Force: Fury (Mentioned only) (Unknown)Unknown UnknownNoneLegacy of the Force: Revelation (Unknown)Unknown UnknownNoneLegacy of the Force: Invincible (Mentioned only) (Unknown)Unknown UnknownNoneFate of the Jedi: Conviction (Unknown)Unknown UnknownNoneFate of the Jedi: Conviction audiobook (Unknown)Unknown UnknownNone