686 Gersuind
686 Gersuind is a minor planet orbiting the Sun that was discovered by German astronomer August Kopff on 15 August 1909 from Heidelberg. It was named after a character in Gerhart Hauptmann's play Gersuind.
| Discovery | |
|---|---|
| Discovered by | August Kopff |
| Discovery site | Heidelberg |
| Discovery date | 15 August 1909 |
| Designations | |
MPC designation | (686) Gersuind |
Alternative designations | 1909 HF |
Minor planet category | main-belt · (middle) Gersuind |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 106.67 yr (38960 d) |
| Aphelion | 3.2844 AU (491.34 Gm) |
| Perihelion | 1.8987 AU (284.04 Gm) |
Semi-major axis | 2.5915 AU (387.68 Gm) |
| Eccentricity | 0.26736 |
Orbital period (sidereal) | 4.17 yr (1523.8 d) |
Mean anomaly | 236.17° |
Mean motion | 0° 14m 10.5s / day |
| Inclination | 15.672° |
Longitude of ascending node | 243.103° |
| 88.883° | |
| Physical characteristics | |
Mean radius | 20.565±2.25 km |
Synodic rotation period | 6.3127 h (0.26303 d) |
| 0.1416±0.037 | |
| 9.67 | |
This object is the namesake of a family of 40–207 asteroids that share similar spectral properties and orbital elements; hence they may have arisen from the same collisional event. All members have a relatively high orbital inclination.
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