An earlier version of this story stated that the orbital period of Saturn as 12 years; of course this is incorrect, and several readers pointed out that it's actually 29.4571​. Sorry about that!

The Midnight Planetarium is 44 mm x 14 mm in rose gold; the relative position of the six innermost planets is shown on an aventurine dial. Read about it at Van Cleef & Arpels online.

Don't have the HODINKEE App yet? Get years of amazing watch content plus new stories, breaking news, and access to great new features like HODINKEE Live, free on iOS.