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Table 6

Estimated accuracy of the derived MWSC cluster parameters

Parameter Internal error External error

Proper motion ± 0.5 mas/yr (δ > −20°) ±0.8 mas/yr
± 0.8 mas/yr (δ < −20°)
Distance 11%
E(B − V) 7%
Age1 25%, (log t < 8.2) 39%
10%, (log t > 8.2)
Tidal radius 25%
Radial velocity2 ±1.0 km s-1



Only 637 clusters have derived internal errors in the catalogue.


75% of clusters have εRV < 5.0 km s-1 (for more details, see text).

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