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EV Lacertae

A red dwarf and a flare star. On April 25, 2008 it had an eight hours lasting monster flare, several thousand times stronger than a solar flare.

Constellation: Lacerta
Age: circa 300 million years
Distance: 16.5 light-years
Spectral class: M3.5
Visual magnitude: 10.30
Luminosity: 0.0017 * Sun
Mass: 0.16 * Sun
Diameter: 0.38 * Sun
Radial velocity: -0.5 km/sec

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05/19/2008

     EV Lacertae
The monster flare.
Graphic: Casey Reed/NASA
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