Fireballs and Bolides

A fireball is defined as any meteor whose brightness exceeds that of magnitude -3 (about the brightness of Venus at maximum brilliance).  All details about the event, and the observer's uncertainty about any of them, should be recorded accurately.  A Fireball Report Form is included with this Kit, and should be filled out as soon as possible after a sighting is made.  Describing the path of the fireball with respect to the stars or the horizon is important.  Since fireballs may lead to meteorites their reporting is essential.  Reports should be made to the Director, using the Fireball Report Form given with this Kit, as soon as possible.

If a fireball exhibits an exploding characteristic it is termed a bolide.  Exploding bolides should be reported by e-mail at once to the ASV Meteor Section Director at




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