Consider a bond with the following features and a hypothetical settlement date of 10 October 2019.

Annual Coupon	5%
Coupon Payment Frequency	Semiannual
Interest Payment Dates	30 December and 30 June
Maturity Date	30 December 2020
Day-Count Convention	30/360
Annual Yield-to-Maturity	6%

What is the bond's approximate modified duration assuming a 10 bp change in its annual yield-to-maturity? Remember to annualize your answer and round to three decimal places.