Orange-and-white dwarf hamster Mochi missing

I lost my orange-and-white dwarf hamster Mochi yesterday around 3pm after I left his cage door open in my apartment above a cafe on North Pleasant Street in Amherst. He’s tiny, about an inch long, with an orange patch over his right eye and a white belly, plus a small white crescent-shaped patch on his back. I last saw him near the radiator by the campus bus stop, close to the Fine Arts Center and Kendrick Park. Mochi is my little buddy and has helped me through a rough month, so I’d really appreciate any sightings or a safe return. If you spot him, please text me.