| Discovery | |
|---|---|
| Discovered by | Max Wolf |
| Discovery site | Heidelberg Observatory |
| Discovery date | 21 February 1916 |
| Designations | |
| MPC designation | (818) Kapteynia |
| Pronunciation | /kæpˈteɪniə/ |
| Alternative designations | 1916 YZ |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 99.92 yr (36496 d) |
| Aphelion | 3.4695 AU (519.03 Gm) |
| Perihelion | 2.8693 AU (429.24 Gm) |
| Semi-major axis | 3.1694 AU (474.14 Gm) |
| Eccentricity | 0.094677 |
| Orbital period (sidereal) | 5.64 yr (2060.9 d) |
| Mean anomaly | 38.374° |
| Mean motion | 0° 10 28.848 / day |
| Inclination | 15.664° |
| Longitude of ascending node | 70.816° |
| Argument of perihelion | 293.096° |
| Earth MOID | 1.91242 AU (286.094 Gm) |
| Jupiter MOID | 2.0269 AU (303.22 Gm) |
| TJupiter | 3.138 |
| Physical characteristics | |
| Mean radius | 24.725±1.95 km |
| Synodic rotation period | 16.35 h (0.681 d) |
| Geometric albedo | 0.1655±0.029 |
| Absolute magnitude (H) | 9.3 |
818 Kapteynia is a minor planet orbiting the Sun. This asteroid is named for the Dutch astronomer Jacobus Kapteyn.
References
- "818 Kapteynia (1916 YZ)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 4 May 2016.
External links
- 818 Kapteynia at AstDyS-2, Asteroids—Dynamic Site
- 818 Kapteynia at the JPL Small-Body Database
| Minor planets navigator | |
|---|---|
| Small Solar System bodies | |||||||
|---|---|---|---|---|---|---|---|
| Minor planets |
| ||||||
| Comets | |||||||
| Other | |||||||
_mathilde.jpg){kind=small} | This article about an asteroid native to the asteroid belt is a stub. You can help Misplaced Pages by expanding it. |