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How to use the free Occultation iPhone app to time the occultation of Regulus

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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.

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