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Ephemeris Calculator
Compute Mercury ephemerides for any date and time between 01 Jan 1970 and 01 Jan 1970 and display the predicted position in an interactive sky map.
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How bright is Mercury?
The current visual magnitude of Mercury is -1.40. Given its brightness, Mercury should be visible to the naked eye, even from highly light polluted areas.
The following chart is the predicted light curve (visual magnitude as a function of time) of Mercury, 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.