First, great catch, it's beautiful! It is an intergeneric hybrid of the Oncidium tribe, enough of them look similar that I don't think an exact ID is possible. Fortunately the care for all of the variations on the theme is similar - indirect light, keep on the damp side, house temperatures (or a bit cooler) are fine.
I have something very similar. Mine is (at least theoretically) an Oncostele (Wilsonara) "Firecat Jamaica Nice", or at least that's what the label said. It looks identical to yours, bit I got it at a grocery store and the are not very careful with the labels. Care is exactly what Roberta said.