When accounting for the earth's peculiar velocity, the redshift that would pertain in that case should be used but d A should be corrected for the motion of the solar system by a factor between 0.99867 and 1.00133, depending on the direction. (If one starts to move with velocity v towards an object, at any distance, the angular diameter of that object decreases by a factor of ( 1 + v / c ) / ( 1 − − v / c ) . )