The NIST Reference on Constants, Units and Uncertainty

Fundamental Physical Constants
Constants
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proton magnetic moment
 $\mu_{\rm p}$
 Numerical value  1.410 606 795 45 x 10-26 J T-1
 Standard uncertainty  0.000 000 000 60 x 10-26 J T-1
  Relative standard uncertainty  4.3 x 10-10
 Concise form  1.410 606 795 45(60) x 10-26 J T-1    
 
Click here for correlation coefficient of this constant with other constants
Source: 2022 CODATA     
recommended values
 
Definition of
uncertainty
 
     Correlation coefficient with
any other constant

 
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