Your absolutely right, Humble_Scientist. I take all the blame for the erroneous number. I'm sorry I accused you of being the source of the error, and I'm also sorry that I didn't check my previous posts to see if I might have been the source of the mistake. Again my apologies.
But ironically, there is a message here that is applicable to every debate on this forum. What we just experienced was a perfect demonstration of why we developed the scientific method, and why it should be used in discussions of FE.
It's simple really:
People make mistakes.
That's why the scientific method has been so successful at describing the world around us. It realizes that everyone (Myself included) is capable of being incorrect. To err is.
So the only way you avoid mistakes, or at least minimize the damage once you've made one, is to be skeptical. And if something is wrong (like my statement about the velocity of SMART-1) it will be corrected very quickly (As Humble_Scientist did.)
If for example, Instead of the scientific method, I were to use the Zeteitc method that is promoted by so many FE'ers (See posts by user The_Earth_Does_Not_Exist for a good demonstration) I would not be admitting to my mistake. I would instead be saying something along the lines of "I didn't say that, because I refuse to acknowledge the evidence."
So once again my apologies. I will be much more careful in the future, and (Like any good scientist) I hope to be proven wrong many, many more times. (It's so much more exciting when you're incorrect.)