In Evidence
Ephemeris Calculator
Compute Asteroid (NEO) 2021 BB ephemerides for any date and time between 01 Jan 1970 and 01 Jan 1970 and display the predicted position in an interactive sky map.
How bright is Asteroid (NEO) 2021 BB?
The current visual magnitude of Asteroid (NEO) 2021 BB is 30.04. Given its brightness, Asteroid (NEO) 2021 BB 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 (NEO) 2021 BB, 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.