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atomic unit of momentum  Numerical value  1.992 851 914 10 x 10-24 kg m s-1  Standard uncertainty  0.000 000 000 30 x 10-24 kg m s-1   Relative standard uncertainty  1.5 x 10-10  Concise form  1.992 851 914 10(30) x 10-24 kg m s-1       Click here for correlation coefficient of this constant with other constants Source: 2018 CODATA      recommended values  Definition of uncertainty       Correlation coefficient with any other constant