How bright is Asteroid 19 Fortuna?
The current visual magnitude of Asteroid 19 Fortuna is 12.45. Given its brightness, Asteroid 19 Fortuna should be visible with the help of a telescope having an aperture of 4 inches (100mm) or more.
The following chart is the predicted light curve (visual magnitude as a function of time) of Asteroid 19 Fortuna, 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.