Secular value of the semimajor axis drift ﹩\langle {da}/{dt}\rangle ﹩ due to the Yarkovsky effect for both asteroids in the Rheinland and 2001 NQ8 pair. Nominal spin orientation from Sections 3.1 and 3.2 for both components is used. Red curve for the primary component (6070) Rheinland, blue curve for the secondary component (54827) 2001 NQ8; dashed blue would be the maximum possible ﹩\langle {da}/{dt}\rangle ﹩ value for 180° obliquity for reference. The gray Gaussian at the top shows the assumed distribution of the thermal inertia of both asteroids in our integrations.