Kinematic study of 4003 open star clusters yields galactic rotation rates Ω0=28.99 km/s/kpc and |ΔΩ|=2.0 km/s/kpc, indicating the Sun lies close to corotation at 7.6 or 8.6 kpc.
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Analysis of spatial velocities of several samples of open star clusters
Kinematic study of 4003 open star clusters yields galactic rotation rates Ω0=28.99 km/s/kpc and |ΔΩ|=2.0 km/s/kpc, indicating the Sun lies close to corotation at 7.6 or 8.6 kpc.