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AU Microscopii

A young red dwarf which is surrounded by a huge dust disk made of the debris of asteroids and comets. This shows some bulks which only can be explained by planets. If those where gas giants they should have been discovered already. So it is supposed that the star is orbited by small, maybe earthlike planets or protoplanets.

Constellation: Microscopium
Age: circa 10 million years
Distance: 32.4 light-years
Spectral class: M0
Visual magnitude: 8.96
Luminosity: 0.022 * Sun
Mass: 0.5 * Sun
Diameter: 0.67 * Sun
Radial velocity: -7.1 km/sec

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Graphic: California Institute of Technology

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