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Struve 2398

Struve or Sigma 2398 is a pair of inconspicuous red dwarfs. The smaller is a flare star.

Constellation: Draco
Distance: 11.64 light-years
Radial velocity: -0.8 km/sec
Orbit period of Struve 2398 A and B: 453 years

Struve 2398 A

Spectral class: M3
Visual magnitude: 8.94
Luminosity: 0.00295 * Sun
Mass: 0.29 * Sun
Diameter: 0.541 * Sun
 

Struve 2398 B

Spectral class: M3.5
Visual magnitude: 9.70
Luminosity: 0.00146 * Sun
Mass: 0.25 * Sun
Diameter: 0.552 * Sun

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Photo: ESO Online Digitized Sky Survey
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