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| This plot shows the apparent magnitude of asteroid 2019 PDC as seen from the Earth (the green line). The distance of the asteroid from the Sun and Earth varies widely over the years. When it gets too far from Earth, the asteroid will become too faint to be observed (about magnitude 26.7), and when its position in the sky is too close to the Sun’s (closer than 50 degrees), it will also become unobservable. The shaded regions on this plot indicate the times when the asteroid is unobservable, according to those criteria. In other words, the asteroid is observable only during the unshaded periods on this plot. |