Answer:
Asteroid (367 943) 2012 DA14 was visible from Madeira at nightfall. Its observation could only be made using telescopes. Although it was so close, it is a rather small object, so its brightness was not enough to be visible to the naked eye. The brightness was the greatest over Indonesia, the area where the distance to the Earth's surface was smallest, but still never visible to the naked eye. Its telescope observations reveal a small dot moving rapidly against the fixed star background.
