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Published on Mar 8, 2014
On March 20, 2014, the bright star Regulus is predicted to be occulted by the asteroid Erigone. This will cause the star to "wink out" in the sky for up to 14 seconds for millions of people who live in the predicted path of visibility.
Timing these events (i.e. the duration when the star is not visible) will make an important contribution to the scientific study of the asteroid.
This app is designed to make it easy for iPhone users to record the times when the star disappears and reappears and report that information to scientists studying the event.
The more people who time and report this event, the better we will understand the size and shape of the asteroid.