Comet for Windows is a software to analyze light curves of comets, or to support observation of comets.
You can display light curves of comets using observations around the world, calculate the magnitude formula based on that data, predict future brightness of comets, make a plan to observe comets, draw chart and look up magnitude of comparison stars, and so on.
Tools are provived to import data from most common formats/sources as well as to input new orbital elements.
Note: the title (above) points to the English installation file; you can the Japanese version here
