asteroid, code

The code of a sun is given by four two-digit numbers.  Our Sun, for instance, is 17-48-87-90.  The code of an asteroid has six numbers.  The first four are the code of its sun.  The fifth is 00, which shows it’s an asteroid, not a planet.  The sixth is found by counting the asteroids out from the sun.  Eros, the nearest asteroid to our Sun, is 17-48-87-90-00-01.