(a) ZTF (top) and Gaia DR3 (bottom, offset) Lomb–Scargle periodograms of (2412) Wil on one common period grid; markers show each global maximum, 11.863 hr (ZTF) and 11.861 hr (Gaia). (b) The 2021 ZTF photometry folded on P = 11.863 hr and (c) on 2P = 23.726 hr; the two are not securely distinguished.