| Inner Atira | 0 | Semi-major axis (a) < 1 and Aphelion Distance (Q) < 0.983 |
| Inner Aten | 1 | Semi-major axis (a) < 1 and Aphelion Distance (Q) >= 0.983 |
| Inner Amor | 2 | 1 =< Semi-major axis (a) and 1.017 <= Perihelion Distance (q) < 1.3 |
| Inner Apollo | 3 | 1 =< Semi-major axis (a) and Perihelion Distance (q) < 1.01 |
| Inner Other | 4 | 1 =< Semi-major axis (a) and Aphelion Distance (Q) < Perihelion Distance of Mars and does not fit any other 'inner' category |
| Middle Mars Crosser | 10 | 1 =< Semi-major axis (a) < 3.2 and 1.3 < Perihelion Distance (q) < 1.666 |
| Middle Main Belt | 11 | 1 =< Semi-major axis (a) < 3.27831 and Inclination (i) < 75 |
| Middle Jovian Trojan | 12 | 4.8 < Semi-major axis (a) < 5.4 and Eccentricity < 0.3 |
| Middle Other | 19 | Semi-major axis (a) < Semi-major axis (a) of Jupiter and does not fit any other 'middle' category |
| Outer Jupiter Coupled | 20 | Semi-major axis (a) >= 1 and 2 < Tisserand (T) < 3 |
| Outer Neptune Trojan | 21 | 29.8 < Semi-major axis (a) < 30.4 |
| Outer Centaur | 22 | Semi-major axis (a) < Semi-major axis (a) of Neptune |
| Outer TNO | 23 | Semi-major axis (a) < Semi-major axis (a) of Neptune and does not fit any other 'outer' category |
| Parabolic | 31 | Eccentricity = 1 |
| Hyperbolic | 30 | Eccentricity > 1 |
| Unusual | 99 | |