How bright is Asteroid 1566 Icarus?
The current visual magnitude of Asteroid 1566 Icarus is 18.05. Given its brightness, Asteroid 1566 Icarus should be visible only through long exposure photography.
The following chart is the predicted light curve (visual magnitude as a function of time) of Asteroid 1566 Icarus, according to the most recent ephemerides data. Magnitude data is sampled with a 2 days interval and there might be inaccuracies for objects changing brightness very rapidly during the course of a few days. For comets there could be large discrepancies between the observed and predicted brightness because of their highly dynamic behaviour.
Predicted magnitude of Asteroid 1566 Icarus between
January 1900 and January 2100