| Name | |
|---|---|
| Name | Kapteynia |
| Designation | 1916 YZ |
| Discovery | |
| Discoverer | Max Wolf |
| Discovery date | February 21, 1916 |
| Discovery site | Heidelberg |
| Orbital elements | |
| Epoch August 18, 2005 (JDCT 2453600.5) | |
| Eccentricity (e) | 0.098 |
| Semimajor axis (a) | 3.167 AU |
| Perihelion (q) | 2.857 AU |
| Aphelion (Q) | 3.477 AU |
| Orbital period (P) | 5.637 a |
| Inclination (i) | 15.680° |
| Longitude of the ascending node (Ω) | 71.032° |
| Argument of Perihelion (ω) | 295.591° |
| Mean anomaly (M) | 56.643° |
818 Kapteynia is a minor planet orbiting the Sun.