The large body was discovered on Aug. 9, 1994 – hence its designation – by Robert McNaught at the Siding Spring Observatory in Australia, EarthSky reported.
Astronomers also found the asteroid in earlier images that date back to September 1974.
Amateur sky watchers will be able to spot (7482) 1994 PC1 about 4:50 p.m. EST on Jan. 18. It will appear as a point of light passing in front of background stars during the evening.
The rock will shine at around magnitude 10 — a decent target for observers using a 6-inch or larger telescope.