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Artist's commentary
Sirius B
α Canis Majoris B
EGGR 49, WD 0642-166
Mass 1.018 ± 0.011 M
Radius 0.0084 ± 3% R
Luminosity 0.056 L
Surface gravity (log g) 8.57cgs
Temperature 25,000 ± 200 K
Age 228Myr