Hi Mary,
It doesn't look like your Orchid is registered with the RHS (often plants are marketed before they are registered with the RHS Orchid Registrar). The name will either be Phal. Shu Long Green Apple (I can find a number of marketed hybrids like Shu Long Red Apple, etc.) or Phal. LongShu Green Apple (there are a number of LongShu hybrids registered).