The first 10 modes of eigenmaps identified by PCA for the Warm Jupiter case with ψ _LOS = 90°. We show the maps in a Mollweide projection that shows all longitudes and latitudes. The reference hemisphere, which is the hemisphere that faces the observer at the midpoint phase of ingress, is centered in each projection and outlined with a dotted white circle. Green dashed contours represent the equator and ±45° latitude lines, with arrows indicating the direction of rotation. Rotation rates span the scale from “slow” where the planet rotates a small fraction of a full rotation across eclipse (N _tot < 1), to “fast” where the planet rotates through a considerable fraction of a full rotation. At the fastest rate the planet’s rotation period approaches the duration of ingress or egress (N _i,e → 1). For reference, with our prototypical 10 day Warm Jupiter, N _tot = 1 corresponds to ω _rot/ω _orb ≈ 71, and N _i,e = 1 corresponds to ω _rot/ω _orb ≈ 432.