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FK Comae Berenices

The yellow giant attracts attention by the enormous activity of its surface. This is marked by numerous sunspots, many more as we know from our Sun.
The star rotates with 180 km/sec and changes, due to the spots, every 2.40 days its luminosity for 0.1 visual magnitudes.

Constellation: Coma Berenices
Distance: 760 light-years
Spectral class: G5 - G8
Visual magnitude: 8.17
Luminosity: 30 * Sun
Diameter: 8 * Sun

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The temperature distribution for different points in time.
Graphic: Heidi Korhonen
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