The uncertainty in the distance in parsecs (δd) can be computed from the uncertainty in the distance modulus (δμ) using δ δ d = 0.2 ln ⁡ ⁡ ( 10 ) 10 0.2 μ μ + 1 δ δ μ μ ≈ ≈ 0.461 d δ δ μ μ which is derived using standard error analysis.