1991 DG is an Apollo-class potential hazardous near Earth-asteroid which was first observed by R. H. McNaught from Siding Spring Observatory on Feb. 20, 1991.
It orbits the Sun every 623 days coming as close as 0.91 AU at perihelion and reaching as far as 1.95AU from the Sun at aphelion. It was estimated to have an average diameter of between 0.4 – 0.95 km based on combined optical and radar observations and calculations.
It is expected to have its close approach at about 12.65 million km from Earth on April 6, 2020.
Last March 3, 2020, Al Sadeem Observatory measured the object with a V magnitude of 16.9-17.0V and gradually brightening.