The Seismic Experiment for Interior Structure (SEIS) instrument, which developed a leak in its vacuum container, is expected to be ready for shipment to the United States in early January.
The supermassive black hole is 40 million times as massive as the sun and powers a quasar that existed 700 million years after the Big Bang.
The asteroid zoomed by Earth at a perfectly safe distance of around 1.8 million miles (2.9 kilometers).
Images show surprise changes to the spacecraft as it interacted with the atmosphere.
