Comment 8 for bug 1690615

I also had a look into the constellations_boundaries.dat file. This includes precessed line points with rounded (slightly too few) numerical digits for ultimate accuracy. These cannot be restored to sub-arcseconds, so either somebody has to process the original data files again (bound_18.dat from Davenhall&Leggett 1990 cat.VI/49) or we keep it as-is. Actually we are approximating the boundaries with great-circle arcs, which is wrong anyhow. But the difference is negligibly small for all practical purposes likely except when it comes to observation of this very star with sub-arcsecond zoom level, so I'd rather say we can close this bug.