Map of the ground track from our refined prediction, which incorporated astrometry acquired at the 1.5 m Sierra Nevada telescope, the 1.2 m Calar Alto telescope, and the 2 m Liverpool telescope. The blue lines mark the boundaries of the body’s shadow, calculated assuming a spherical shape with a diameter (D) of 398 km. The central path is indicated by a green line. Red lines illustrate the 3-sigma uncertainties associated with the prediction. The map also shows the observation sites: green markers denote positive detections, red negative detections (i.e., “misses”), blue planned but unexecuted observations, yellow locations with adverse weather, and purple technical problems. Map credit: OpenStreetMap.