Gday Martin
If you added the sun as asteroid via the hbx
when you enter the asteroids screen, just scroll UP
and it wraps to the bottom element ( ie the new one

)
Another "trick" to reset or position the indexes into long lists is to use the NGC screen.
If you know the record number you want ( ie zero in this case ready for a scroll up ), just go NGC ( hotkey 9 ) and enter 1 and enter then mode out.
That has reset set the generic record counter to 1
Now go to the asterids screen and it will be on record 1
Just scroll UP and yr on the last record.
Easy peasy and no patch reqd.
Andrew