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Two dwarf satellite galaxies of our galaxy have large $\frac{\text{diameter}}{\text{distance}}$ values. And one of them, Canis Major Dwarf, is 8kpc away which is the same with our distance to the galactic center.

Can we limit the masses(even they are not heavy) of their central black holes now? Like Gillessen et al. 2009, maybe we can find stars orbiting their central black holes.

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